{"id":4980,"date":"2026-07-01T15:58:31","date_gmt":"2026-07-01T15:58:31","guid":{"rendered":"https:\/\/productionscrews.com\/a2-70\/"},"modified":"2026-07-01T15:58:37","modified_gmt":"2026-07-01T15:58:37","slug":"a2-70","status":"publish","type":"post","link":"https:\/\/productionscrews.com\/ko\/a2-70\/","title":{"rendered":"A2-70 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uac15\uc774\ub780 \ubb34\uc5c7\uc778\uac00\uc694? \ub4f1\uae09, \uac15\ub3c4 \ubc0f \uc0ac\uc591 \uac00\uc774\ub4dc (2026)"},"content":{"rendered":"<p><strong>A2-70\uc740 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\uacc4(304 \/ 18-8) \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uac15\uc73c\ub85c, \ucd5c\uc18c 700 MPa \uc778\uc7a5 \uac15\ub3c4\uae4c\uc9c0 \ub0c9\uac04 \uac00\uacf5\ub418\uc5c8\uc73c\uba70 ISO 3506-1\uc5d0 \ub530\ub77c \ubd84\ub958\ub429\ub2c8\ub2e4.<\/strong><\/p>\n<p>\ubcfc\ud2b8 \uba38\ub9ac\uc5d0 \u201cA2-70\u201d\uc774 \ucc0d\ud600 \uc788\uac70\ub098 \ub370\uc774\ud130\uc2dc\ud2b8\uc5d0 \uc77c\ub82c\ub85c \ub098\uc5f4\ub418\uc5b4 \uc788\ub294 \uac83\uc744 \ubc1c\uacac\ud588\uc744 \ub54c, \uc9c0\uae08 \ub2f9\uc2e0\uc774 \ubb34\uc5c7\uc744 \uac00\uc9c0\uace0 \uc788\ub294\uc9c0 \uc815\ud655\ud788 \uc54c\uc544\uc57c \ud569\ub2c8\ub2e4. \uc774\uac83\uc774 \ucda9\ubd84\ud788 \uac15\ud55c\uac00\uc694? \uc678\ubd80\uc5d0\uc11c \ub179\uc2ac\uae4c\uc694? \uc774\uac83\uc774 304\uc640 \uac19\uc740 \uac83\uc778\uac00\uc694? \ubaa8\ub4e0 \uc1fc\ud551 \ud398\uc774\uc9c0\ub294 \uae30\uaebc\uc774 \ub2f9\uc2e0\uc5d0\uac8c \ud310\ub9e4\ud560 \uac83\uc785\ub2c8\ub2e4. <strong>a2-70<\/strong> \ud45c\uc2dc\uac00 \ubb34\uc5c7\uc744 \uc758\ubbf8\ud558\ub294\uc9c0 \ub9d0\ud558\uc9c0 \uc54a\uace0 \ubcfc\ud2b8.<\/p>\n<p>\uc774 \uac00\uc774\ub4dc\uac00 \uadf8\uac83\uc744 \ud574\uacb0\ud569\ub2c8\ub2e4. \uc6b0\ub9ac\ub294 \ucf54\ub4dc\ub97c \ud574\ub3c5\ud558\uace0, \uc804\uccb4 \uae30\uacc4 \uc0ac\uc591\uc744 \uc81c\uc2dc\ud558\uba70, 304 \/ 18-8 \/ 316\uc758 \ud63c\ub780\uc744 \uc815\ub9ac\ud558\uace0, \uc5b4\ub514\uc5d0 \uc788\ub294\uc9c0 \uc54c\ub824\ub4dc\ub9ac\uaca0\uc2b5\ub2c8\ub2e4. <strong>a2-70<\/strong> \uc62c\ubc14\ub978 \uc120\ud0dd\uc774\uba70, \uc870\uc6a9\ud788 \uadf8\ub807\uc9c0 \uc54a\uc740 \uba87 \uad70\ub370\ub3c4 \uc788\ub2e4. \ub9c8\uc9c0\ub9c9\uc5d0\ub294 \uae08\uc18d\uacf5\ud559\uc790\uac00 \ud558\ub294 \uac83\ucc98\ub7fc A2-70 \ud45c\uc2dd\uc744 \uc77d\uac8c \ub420 \uac83\uc774\ub2e4.<\/p>\n<p><img decoding=\"async\" alt=\"\uc57c\uc678 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uac15 \ub09c\uac04\uc5d0 \uc124\uce58\ub41c A2-70 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uac15 \ubcfc\ud2b8\" src=\"https:\/\/productionscrews.com\/wp-content\/uploads\/2026\/07\/a2-70-hero.jpg\" \/><\/p>\n<h2>\u201cA2-70\u201d\uc740 \uc2e4\uc81c\ub85c \ubb34\uc5c7\uc744 \uc758\ubbf8\ud569\ub2c8\uae4c?<\/h2>\n<p><strong>A2-70\uc740 \ub450 \ubd80\ubd84\uc73c\ub85c \ub098\ub269\ub2c8\ub2e4. \u201cA2\u201d\ub294 \uac15\ucca0 \uadf8\ub8f9(\uc624\uc2a4\ud14c\ub098\uc774\ud2b8\uc131 \uc2a4\ud14c\uc778\ub9ac\uc2a4, \ubcf4\ud1b5 304)\uc774\uace0, \u201c70\u201d\uc740 \uac15\ub3c4 \ub4f1\uae09: \ucd5c\uc18c \uc778\uc7a5 \uac15\ub3c4 700 MPa\uc785\ub2c8\ub2e4.<\/strong><\/p>\n<p>\uc9c0\uc815\uc740 \uad6d\uc81c \ud328\uc2a4\ub108 \ud45c\uc900\uc778 ISO 3506-1\uc5d0\uc11c \ubc14\ub85c \uc720\ub798\ub41c \uac83\uc785\ub2c8\ub2e4. \uc774\uac83\uc740 \ube0c\ub79c\ub4dc\ub098 \uc81c\ud488 \ub77c\uc778\uc774 \uc544\ub2c8\uba70, \ub450 \uac1c\uc758 \ud544\ub4dc\ub85c \uc774\ub8e8\uc5b4\uc9c4 \ucf54\ub4dc\ub85c \ub2f9\uc2e0\uc5d0\uac8c \uc54c\ub824\uc90d\ub2c8\ub2e4. <em>\uc18c\uc7ac \uacc4\uc5f4<\/em> \uadf8\ub9ac\uace0 <em>\uac15\ub3c4 \ub4f1\uae09<\/em> \uc5ec\uc12f \uae00\uc790\ub85c. \ubd84\ud560\uc744 \ubcf4\uba74 \uc804\uccb4 \uc2dc\uc2a4\ud15c\uc774 \uc5f4\ub9bd\ub2c8\ub2e4.<\/p>\n<h3>\ub808\ud130 \ud50c\ub7ec\uc2a4 \ub118\ubc84 \ub514\ucf54\ub4dc<\/h3>\n<p>\uccab \ubc88\uc9f8 \ud544\ub4dc\ub294 \ubb38\uc790\uc640 \uc22b\uc790\uc785\ub2c8\ub2e4. <strong>A<\/strong> \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\uacc4, \ube44\uc790\uc131 \ud06c\ub86c-\ub2c8\ucf08 \uacc4\uc5f4\uc758 \uc2a4\ud14c\uc778\ub9ac\uc2a4. <a href=\"https:\/\/www.azom.com\/article.aspx?ArticleID=2867\" target=\"_blank\" rel=\"noopener\">AZoM\uc758 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\uc131 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15 \uc7ac\ub8cc \ucc38\uace0 \uc790\ub8cc<\/a> \uc124\uba85\ud558\uc790\uba74, \uc774\uac83\uc774 \uac00\uc7a5 \ub110\ub9ac \uc0ac\uc6a9\ub418\ub294 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uadf8\ub8f9\uc778 \uc774\uc720\ub294 \ubd80\uc2dd \uc800\ud56d\uc131\uacfc \ub6f0\uc5b4\ub09c \uc131\ud615\uc131\uc744 \uacb0\ud569\ud588\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4. <strong>2<\/strong> \uadf8\uac83\uc740 \ud574\ub2f9 \uacc4\uc5f4 \ub0b4\uc5d0\uc11c \ud45c\uc900 304\ud615 \ud654\ud559 \uc131\uc9c8\uc5d0 \ud574\ub2f9\ud558\ub294 \ud2b9\uc815 \uadf8\ub8f9\uc73c\ub85c \uc881\ud600\uc9d1\ub2c8\ub2e4. \ub530\ub77c\uc11c \"A2\"\ub294 \uc77c\ubc18\uc801\uc73c\ub85c \ub0c9\uac04 \uac00\uacf5\ub41c 304 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uc785\ub2c8\ub2e4.<\/p>\n<p>\ub450 \ubc88\uc9f8 \ud544\ub4dc\ub294 \ub300\uc2dc \ub4a4\uc5d0 \uc624\ub294 \uc18d\uc131 \ub4f1\uae09\uc785\ub2c8\ub2e4. \uc774\ub294 \ucd5c\uc18c \uc778\uc7a5 \uac15\ub3c4\ub97c 10\uc73c\ub85c \ub098\ub208 \uac12\uc774\uba70, MPa \ub2e8\uc704\ub85c \ud45c\uc2dc\ub429\ub2c8\ub2e4. <strong>70<\/strong> \ub530\ub77c\uc11c \uc758\ubbf8\ud569\ub2c8\ub2e4 <strong>700 MPa<\/strong> \ucd5c\uc18c\uac12\uc785\ub2c8\ub2e4. A2-50\uc740 500MPa, A2-80\uc740 800MPa\uc785\ub2c8\ub2e4. \uc5d0 \ub530\ub974\uba74 <a href=\"https:\/\/bssa.org.uk\/wp-content\/uploads\/2022\/08\/Microsoft-Word-SSAS2.31-Fastener-Grades-A1A2_A3_-A4_A5_-to-BS-EN-ISO-3506-1.pdf\" target=\"_blank\" rel=\"noopener\">\uc601\uad6d \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15 \ud611\ud68c(BSSA)\uac00 \uc694\uc57d\ud55c ISO 3506-1 \ud45c\uc900<\/a>, \uc774 \uc22b\uc790\ub294 \ub2e8\uc21c\ud788 \uc6d0\uc790\uc7ac \ub9c9\ub300\uac00 \uc544\ub2cc \uc644\uc131\ub41c \ud328\uc2a4\ub108\uc758 \uac15\ub3c4\ub97c \ubc18\uc601\ud569\ub2c8\ub2e4.<\/p>\n<p>\ud55c\ub208\uc5d0 \ubcf4\ub294 \uc804\uccb4 \ud574\ub3c5:<\/p>\n<table>\n<thead>\n<tr>\n<th>\ud544\ub4dc<\/th>\n<th>\uac12<\/th>\n<th>\uc758\ubbf8<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>A<\/td>\n<td>\uc624\uc2a4\ud14c\ub098\uc774\ud2b8\uacc4<\/td>\n<td>\ud06c\ub86c-\ub2c8\ucf08 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15, \uc5b4\ub2d0\ub9c1 \uc2dc \ube44\uc790\uc131<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>\uadf8\ub8f9 2<\/td>\n<td>304 \uc720\ud615 \ud654\ud559 \uc131\ubd84 (~18% Cr, ~8% Ni)<\/td>\n<\/tr>\n<tr>\n<td>70<\/td>\n<td>\uc18d\uc131 \ud074\ub798\uc2a4<\/td>\n<td>\ucd5c\uc18c 700MPa \uc778\uc7a5 \uac15\ub3c4<\/td>\n<\/tr>\n<tr>\n<td>\uacf5\uae09 \uc870\uac74<\/td>\n<td>\ub0c9\uac04 \uac00\uacf5<\/td>\n<td>\uc5f4\ucc98\ub9ac \ub300\uc2e0 \ub0c9\uac04 \uc778\ubc1c\ub85c \ub2ec\uc131\ub41c \uac15\ub3c4<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\ub0c9\uac04 \uac00\uacf5\uc774 \uc911\uc694\ud55c \uc774\uc720<\/h3>\n<p>\uc774\uac83\uc774 \ub300\ubd80\ubd84\uc758 \uc81c\ud488 \ud398\uc774\uc9c0\uc5d0\uc11c \uc0dd\ub7b5\ud558\ub294 \ubd80\ubd84\uc785\ub2c8\ub2e4. 304\uc640 \uac19\uc740 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\uacc4 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc740 <strong>\uc5f4\ucc98\ub9ac\ub85c \uacbd\ud654\ub420 \uc218 \uc5c6\uc2b5\ub2c8\ub2e4<\/strong>, \ub530\ub77c\uc11c \ub2f4\uae08\uc9c8\ud574\ub3c4 \uac15\ub3c4\uc5d0 \uc720\uc6a9\ud55c \ud6a8\uacfc\uac00 \uc5c6\uc2b5\ub2c8\ub2e4. \uadf8\ub807\ub2e4\uba74 \uc5b4\ub2d0\ub9c1\ub41c 304\uac00 500MPa\uc5d0 \uac00\uae4c\uc6b4\ub370 \uc5b4\ub5bb\uac8c A2-70\uc774 700MPa\uc5d0 \ub3c4\ub2ec\ud560 \uc218 \uc788\uc744\uae4c\uc694? \ub0c9\uac04 \uac00\uacf5\uc785\ub2c8\ub2e4. \ub9c9\ub300 \uc7ac\uace0\ub294 \uc0c1\uc628\uc5d0\uc11c \ub2e4\uc774\ub97c \ud1b5\uacfc\ud558\uc5ec \uc778\ubc1c\ub418\uba70, \uc774\ub294 \uacb0\uc815 \uad6c\uc870\ub97c \ubcc0\ud615\uc2dc\ud0a4\uace0 \uac00\uacf5 \uacbd\ud654\uc2dc\ud0b5\ub2c8\ub2e4.<\/p>\n<p>\uc774\uac83\uc774 \uc18d\uc131 \ub4f1\uae09\uc778 \uc774\uc720 <em>is<\/em> \uacf5\uae09 \uc870\uac74\uc785\ub2c8\ub2e4. \ud074\ub798\uc2a4 50\uc740 \uc5b4\ub2d0\ub9c1(\uc5f0\uc9c8), \ud074\ub798\uc2a4 70\uc740 \ub0c9\uac04 \uc778\ubc1c(\uc77c\ubc18\uc801\uc778 \uac83), \ud074\ub798\uc2a4 80\uc740 \uc2ec\ud558\uac8c \ub0c9\uac04 \uc778\ubc1c(\uacbd\uc9c8)\uc785\ub2c8\ub2e4. \uc2e4\uc81c\ub85c M20 \ubbf8\ub9cc\uc758 \ub300\ubd80\ubd84\uc758 \uae30\uc131 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15 \ubcfc\ud2b8\ub294 A2-70\uc778\ub370, \uc774\ub294 \ub0c9\uac04 \uc778\ubc1c\uc774 \ud574\ub2f9 \ud06c\uae30 \ubc94\uc704\uc758 \uc790\uc5f0\uc2a4\ub7ec\uc6b4 \uc0dd\uc0b0 \uacbd\ub85c\uc774\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4. M24 \uc774\uc0c1\uc5d0\uc11c\ub294 \uc2e4\uc81c 700MPa\uc5d0 \ub3c4\ub2ec\ud558\uae30\uac00 \ub354 \uc5b4\ub824\uc6cc\uc9c0\uba70, \ud45c\uc900\uc5d0\uc11c\ub294 \ub300\ud615 \uc9c1\uacbd\uc5d0 \ub300\ud574 \uac10\uc18c\ub41c \uac12\uc744 \ud5c8\uc6a9\ud569\ub2c8\ub2e4.<\/p>\n<h2>A2-70 \uae30\uacc4\uc801 \uc131\uc9c8 (\uc804\uccb4 \uaddc\uaca9 \ud45c)<\/h2>\n<p><strong>A2-70\uc740 \ucd5c\uc18c \uc778\uc7a5 \uac15\ub3c4 700 MPa, \uc99d\uba85 \uc751\ub825 450 MPa (0.2% \ud56d\ubcf5), \ud30c\ub2e8 \uc2dc \uc5f0\uc2e0\uc728 \uc57d 0.4d\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/strong> [E-E-A-T]<\/p>\n<p>\uc22b\uc790\ub294 \uaddc\uaca9 \uac00\uc774\ub4dc\uc758 \ud575\uc2ec\uc785\ub2c8\ub2e4. \uc81c\ud488 \ubaa9\ub85d\uc740 \uac00\uaca9\uc744 \uc778\uc6a9\ud558\uc9c0\ub9cc, \uac70\uc758 \uc99d\uba85 \uc751\ub825\uc744 \uc778\uc6a9\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \uc544\ub798 \uac12\ub4e4\uc740 <a href=\"https:\/\/fpg-co.com\/Standards\/ISO%203506-1-2020.pdf\" target=\"_blank\" rel=\"noopener\">\uacf5\ud45c\ub41c ISO 3506-1 \uae30\uacc4\uc801 \uc131\uc9c8 \ud45c\uc5d0\uc11c \ub3c4\ucd9c\ub41c<\/a>\uad6d\uc81c \ud328\uc2a4\ub108 \ud45c\uc900\uc5d0 \uc124\uc815\ub41c \ud55c\uacc4\uce58\ub97c \ubc18\uc601\ud558\uba70<\/p>\n<table>\n<thead>\n<tr>\n<th>\uc18d\uc131<\/th>\n<th>\ub300\ub7b5 M20\uae4c\uc9c0\uc758 \ud45c\uc900 \uc9c1\uacbd\uc5d0 \uc801\uc6a9\ub429\ub2c8\ub2e4.<\/th>\n<th>A2-70 \uac12<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\uc2dc\ud5d8 \ucc38\uace0 \uc0ac\ud56d<\/td>\n<td>\ucd5c\uc18c 700 MPa<\/td>\n<td>\uc778\uc7a5 \uac15\ub3c4 (Rm)<\/td>\n<\/tr>\n<tr>\n<td>\uc804\uccb4 \ud06c\uae30 \ud328\uc2a4\ub108, \uac00\uacf5\ub41c \ucfe0\ud3f0\uc774 \uc544\ub2d8<\/td>\n<td>\uc99d\uba85 \uc751\ub825 (Rp0.2)<\/td>\n<td>\ucd5c\uc18c 450 MPa<\/td>\n<\/tr>\n<tr>\n<td>0.2% \uc601\uad6c \ubcc0\ud615 \ud56d\ubcf5<\/td>\n<td>\ud30c\ub2e8 \ud6c4 \uc5f0\uc2e0\uc728<\/td>\n<td>\ucd5c\uc18c 0.4 d<\/td>\n<\/tr>\n<tr>\n<td>\uacbd\ub3c4<\/td>\n<td>d = \uba85\ubaa9 \ub098\uc0ac \uc9c1\uacbd<\/td>\n<td>\uc77c\ubc18\uc801\uc73c\ub85c 210~350 HV \ubc94\uc704<\/td>\n<\/tr>\n<tr>\n<td>\uc8fc\uc694 \uc218\uc6a9 \uae30\uc900\uc774 \uc544\ub2d8<\/td>\n<td>\uc2dc\ud5d8 \uc628\ub3c4<\/td>\n<td>10 \u00b0C ~ 35 \u00b0C<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\ub450 \uac00\uc9c0 \uc0ac\ud56d\uc5d0 \ub300\ud574 \uc8fc\uc758\uac00 \ud544\uc694\ud569\ub2c8\ub2e4. \uccab\uc9f8, <strong>\uc774\uac83\uc740 \ubaa9\ud45c\uac12\uc774 \uc544\ub2c8\ub77c \ucd5c\uc18c\uac12\uc785\ub2c8\ub2e4.<\/strong>\uaddc\uaca9\uc5d0 \ub9de\ub294 A2-70 \ubcfc\ud2b8\ub294 700MPa \uc774\uc0c1\uc73c\ub85c \ud14c\uc2a4\ud2b8\ub420 \uc218 \uc788\uc73c\uba70 \uc885\uc885 \uadf8\ub807\uac8c \ub429\ub2c8\ub2e4. \ub458\uc9f8, \"0.4d\"\ub77c\ub294 \uc2e0\uc7a5\ub960 \uc218\uce58\uac00 \uc0ac\ub78c\ub4e4\uc744 \ud63c\ub780\uc2a4\ub7fd\uac8c \ud569\ub2c8\ub2e4. \uc774\ub294 \ud30c\ub2e8\ub418\uae30 \uc804\uc5d0 \ubcfc\ud2b8\uac00 \uacf5\uce6d \uc9c1\uacbd\uc758 40% \uc774\uc0c1 \ub298\uc5b4\ub098\uc57c \ud55c\ub2e4\ub294 \uac83\uc744 \uc758\ubbf8\ud558\uba70, \uc774\ub294 \uac8c\uc774\uc9c0 \uae38\uc774\uc758 \ubc31\ubd84\uc728\uc774 \uc544\ub2c8\ub77c \uc5f0\uc131 \uc694\uad6c \uc0ac\ud56d\uc785\ub2c8\ub2e4. \uc774\ub7ec\ud55c \uc5f0\uc131 \ub355\ubd84\uc5d0 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \ubcfc\ud2b8\ub294 \ubd80\uc11c\uc9c0\uae30 \uc804\uc5d0 \uad6c\ubd80\ub7ec\uc9c0\uba70, \uc774\ub294 \uad6c\uc870 \uc791\uc5c5\uc5d0\uc11c \uc9c4\uc815\ud55c \uc548\uc804 \uc5ec\uc720\uc785\ub2c8\ub2e4.<\/p>\n<blockquote>\n<p><strong>\uc804\ubb38\uac00 \ud301:<\/strong> A2-70\uc758 450MPa \ud56d\ubcf5 \uac15\ub3c4\ub294 \uc2e4\uc81c\ub85c \uc0ac\uc6a9 \uc911\uc5d0 \ubcfc\ud2b8\ub97c \uacb0\uc815\ud558\ub294 \uc218\uce58\uc785\ub2c8\ub2e4. \uc774\ub294 \ubcfc\ud2b8\uac00 \uc601\uad6c\uc801\uc73c\ub85c \ubcc0\ud615\ub418\uae30 \uc2dc\uc791\ud558\ub294 \ud558\uc911\uc785\ub2c8\ub2e4. \uc778\uc7a5 \uac15\ub3c4\uac00 \uc544\ub2cc \ud56d\ubcf5 \uac15\ub3c4\ub85c \uc124\uacc4\ud558\uc2ed\uc2dc\uc624. \uc791\ub3d9 \uc911\uc778 \uc870\uc778\ud2b8\uac00 700MPa \ud30c\ub2e8 \uc9c0\uc810 \uadfc\ucc98\uc5d0 \uc788\ub294 \uac83\uc744 \uc6d0\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.<\/p>\n<\/blockquote>\n<p>\uc2e4\uc81c \uc791\uc5c5\uc5d0\uc11c \ubc1c\uacac\ud55c \ud55c \uac00\uc9c0 \uc8fc\uc758 \uc0ac\ud56d: \ub300\uad6c\uacbd A2-70 \ubcfc\ud2b8\ub97c \ud0c4\uc18c\uac15 \ud1a0\ud06c \ucc28\ud2b8\ub85c \ud1a0\ud06c\ub97c \uac00\ud558\uba74 \uacfc\ub3c4\ud55c \uc751\ub825\uc774 \ubc1c\uc0dd\ud569\ub2c8\ub2e4. \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc740 \ub9c8\ubaa8\uac00 \uc2ec\ud558\uace0 \ub9c8\ucc30 \uacc4\uc218\uac00 \ub354 \ub192\uae30 \ub54c\ubb38\uc5d0 \uac8c\uc2dc\ub41c \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15 \ud1a0\ud06c \uac12\uc740 \ub3d9\ub4f1\ud55c \uac15\ub3c4\uc758 \ud0c4\uc18c\uac15 \ubcfc\ud2b8\ubcf4\ub2e4 \ub0ae\uc2b5\ub2c8\ub2e4. \ud56d\uc0c1 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15 \uc804\uc6a9 \ud1a0\ud06c \ud45c\ub97c \uc0ac\uc6a9\ud558\uc2ed\uc2dc\uc624.<\/p>\n<h3>\uc544\ubb34\ub3c4 \uc5b8\uae09\ud558\uc9c0 \uc54a\ub294 \ub300\uad6c\uacbd\uc758 \ud568\uc815<\/h3>\n<p>\uc219\ub828\ub41c \uad6c\ub9e4\uc790\uc870\ucc28\ub3c4 \ub193\uce58\ub294 \uc0ac\uc591 \uc138\ubd80 \uc815\ubcf4\uc785\ub2c8\ub2e4. 700MPa \uc218\uce58\ub294 <em>\ud45c\uc900 \uc9c1\uacbd\uc5d0 \ub300\ud55c \ucd5c\uc18c\uac12<\/em>\uc774\uba70, \ub300\ub7b5 M20\uae4c\uc9c0\uc785\ub2c8\ub2e4. \uadf8 \uc774\uc0c1\uc5d0\uc11c\ub294 \ub0c9\uac04 \uac00\uacf5\uc774 \ub450\uaebc\uc6b4 \ubc14\uc758 \uc804\uccb4 \ub2e8\uba74\uc5d0 \ud6a8\uacfc\uc801\uc73c\ub85c \ub3c4\ub2ec\ud560 \uc218 \uc5c6\uc73c\ubbc0\ub85c ISO 3506-1\uc740 <strong>\ub300\uad6c\uacbd\uc758 \uacbd\uc6b0 \uc18d\uc131 \uac12\uc774 \uac10\uc18c\ud558\ub294 \uac83\uc744 \ud5c8\uc6a9\ud569\ub2c8\ub2e4.<\/strong>M30 A2-70 \ubcfc\ud2b8\ub294 \ud5e4\ub4dc\ub77c\uc778\uc778 700MPa \ub300\uc2e0 500MPa \uc778\uc7a5 \uac15\ub3c4\uc5d0 \ub354 \uac00\uae4c\uc6b8 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uad6c\uc870 \uc5f0\uacb0\uc744 \uc704\ud574 \ud070 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \ubcfc\ud2b8\ub97c \uc9c0\uc815\ud558\ub294 \uacbd\uc6b0, \ud074\ub798\uc2a4 \ubc88\ud638\uac00 \ubaa8\ub4e0 \ud06c\uae30\uc5d0 \ub300\ud574 \uc804\uccb4 \uac15\ub3c4\ub97c \uc804\ub2ec\ud55c\ub2e4\uace0 \uac00\uc815\ud558\uc9c0 \ub9c8\uc2ed\uc2dc\uc624. \uacf5\uae09\uc5c5\uccb4\uc5d0 \uc9c1\uacbd\uc5d0 \ub300\ud55c \uc2e4\uc81c \uc815\uaca9 \uac12\uc744 \ubb38\uc758\ud558\uace0 \uc778\uc99d\uc11c\uc5d0 \uba85\uc2dc\ud558\uc2ed\uc2dc\uc624.<\/p>\n<p>\uc774\uac83\uc740 \uc81c\ud488 \ubaa9\ub85d\uc5d0\uc11c \uc808\ub300 \ub098\uc624\uc9c0 \uc54a\ub294 \uc885\ub958\uc758 \uac83\uc785\ub2c8\ub2e4. \uadf8\ub4e4\uc740 \"A2-70 M30\"\uc744 \ud310\ub9e4\ud558\uace0 \ubaa8\ub4e0 \uac83\uc5d0 \ub300\ud574 700MPa\ub77c\uace0 \uac00\uc815\ud558\uac8c \ud569\ub2c8\ub2e4. \ud558\uc911\uc774 \uc911\uc694\ud55c \uc791\uc5c5\uc5d0\uc11c \uadf8\ub7ec\ud55c \uac00\uc815\uc740 \uc870\uc778\ud2b8\uac00 \uc124\uacc4 \ubd80\uc871\uc73c\ub85c \uc774\uc5b4\uc9c0\ub294 \ubc29\uc2dd\uc785\ub2c8\ub2e4. \uc9c1\uacbd\uc774 \ucee4\uc9c0\uace0 \uac15\ub3c4 \uc694\uad6c \uc0ac\ud56d\uc774 \ub192\uac8c \uc720\uc9c0\ub420 \ub54c, \uc774\ub294 \uc77c\ubc18\uc801\uc73c\ub85c \ub300\uc2e0 A2-80 \ub610\ub294 \uc911\uac04 \ub4f1\uae09 \ud0c4\uc18c\uac15 \uc635\uc158\uc73c\ub85c \uc804\ud658\ud574\uc57c \ud55c\ub2e4\ub294 \uc2e0\ud638\uc785\ub2c8\ub2e4.<\/p>\n<h2>A2 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15 \ud654\ud559 \uc131\ubd84: 304 \/ 18-8\uacfc \ub3d9\uc77c\ud55c\uac00\uc694?<\/h2>\n<p><strong>\ub124, \ubcf8\uc9c8\uc801\uc73c\ub85c \uadf8\ub807\uc2b5\ub2c8\ub2e4. A2 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc740 304 \ub4f1\uae09\uc758 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\uacc4 \uac15\ucca0\uc774\uba70, \"18-8\"\uc740 \uc57d 18%\uc758 \ud06c\ub86c\uacfc 8%\uc758 \ub2c8\ucf08\uc744 \ud568\uc720\ud55c \ub3d9\uc77c\ud55c \ud569\uae08\uc5d0 \ub300\ud55c \uc624\ub798\ub41c \ud604\uc7a5 \uc774\ub984\uc785\ub2c8\ub2e4.<\/strong><\/p>\n<p>\uc774\uac83\uc740 <strong>a2-70<\/strong>\uc5d0 \ub300\ud574 \uac00\uc7a5 \ub9ce\uc774 \ubb3b\ub294 \uc9c8\ubb38\uc774\uba70, Google\uc758 \"\ub2e4\ub978 \uc0ac\ub78c\ub4e4\ub3c4 \ubb3b\uc2b5\ub2c8\ub2e4\" \uc0c1\uc790\uc5d0 \"A2-70\uc740 18\/8\uacfc \ub3d9\uc77c\ud55c\uac00\uc694?\"\ub77c\uace0 \ud45c\uc2dc\ub429\ub2c8\ub2e4. \uc9e7\uc740 \ub300\ub2f5\uc740 A2, 304, 18-8 \ubaa8\ub450 \ub3d9\uc77c\ud55c \uae30\ubcf8 \uc7ac\ub8cc\ub97c \uac00\ub9ac\ud0a4\uc9c0\ub9cc \uc138 \uac00\uc9c0 \ub2e4\ub978 \uba85\uba85 \uc2dc\uc2a4\ud15c\uc5d0\uc11c \ub098\uc628\ub2e4\ub294 \uac83\uc785\ub2c8\ub2e4.<\/p>\n<p><img decoding=\"async\" alt=\"\uc791\uc5c5\ub300 \uc704\uc5d0 \uc815\ub82c\ub41c A2-70 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uac15 \ubcfc\ud2b8, \ub108\ud2b8, \uc640\uc154\" src=\"https:\/\/productionscrews.com\/wp-content\/uploads\/2026\/07\/a2-70-types.jpg\" \/><\/p>\n<h3>\"18-8\"\uc758 \uc720\ub798<\/h3>\n<p>\"18-8\"\uc774\ub77c\ub294 \uc774\ub984\uc740 \uc21c\uc804\ud788 \ud654\ud559\uc801 \uc57d\uc5b4\uc785\ub2c8\ub2e4. <a href=\"https:\/\/en.wikipedia.org\/wiki\/SAE_304_stainless_steel\" target=\"_blank\" rel=\"noopener\">SAE 304 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8\uc5d0 \ub300\ud55c \uc704\ud0a4\ubc31\uacfc \ud56d\ubaa9<\/a> \uc774 \uc124\uba85\ud558\ub4ef\uc774, 304 \uc720\ud615\uc758 \uba85\ubaa9\uc0c1 \uc870\uc131\uc740 \ub300\ub7b5 <strong>18%\uc758 \ud06c\ub86c\uacfc 8%\uc758 \ub2c8\ucf08<\/strong>\uadf8\ub9ac\uace0 \uc774 \ud569\uae08\uc740 1924\ub144 \u201cStaybrite 18\/8\u201d \uc0c1\ud45c\uba85\uc73c\ub85c \ucc98\uc74c \ud310\ub9e4\ub41c \uc774\ud6c4 18\/8\ub85c \ubd88\ub824\uc654\uc2b5\ub2c8\ub2e4. \ud06c\ub86c\uc740 \uc2a4\ud14c\uc778\ub9ac\uc2a4\ub97c \ub9cc\ub4dc\ub294 \uc694\uc18c\ub85c, \ub179\uc744 \ubc29\uc9c0\ud558\ub294 \uc790\uccb4 \ubcf5\uad6c \uc218\ub3d9 \uc0b0\ud654\ub9c9\uc744 \ud615\uc131\ud569\ub2c8\ub2e4. \ub2c8\ucf08\uc740 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8(\ube44\uc790\uc131) \uad6c\uc870\ub97c \uc548\uc815\ud654\ud558\uace0 \uac15\ub3c4\ub97c \ub354\ud569\ub2c8\ub2e4.<\/p>\n<p>A2 \/ 304 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uc758 \ub300\ub7b5\uc801\uc778 \uc870\uc131\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n<table>\n<thead>\n<tr>\n<th>\uc6d0\uc18c<\/th>\n<th>A2 \/ 304 \ubc94\uc704<\/th>\n<th>\uc5ed\ud560<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\ud06c\ub86c (Cr)<\/td>\n<td>17.5 ~ 19.5%<\/td>\n<td>\ub0b4\uc2dd\uc131 (\u201c18\u201d)<\/td>\n<\/tr>\n<tr>\n<td>\ub2c8\ucf08 (Ni)<\/td>\n<td>8.0 ~ 10.5%<\/td>\n<td>\uc624\uc2a4\ud14c\ub098\uc774\ud2b8 \uc548\uc815\ud654, \uac15\ub3c4 (\u201c8\u201d)<\/td>\n<\/tr>\n<tr>\n<td>\ud0c4\uc18c (C)<\/td>\n<td>\u2264 0.08%<\/td>\n<td>\ud0c4\ud654\ubb3c \uc11d\ucd9c\uc744 \ud53c\ud558\uae30 \uc704\ud574 \ub0ae\uac8c \uc720\uc9c0<\/td>\n<\/tr>\n<tr>\n<td>\ub9dd\uac04 (Mn)<\/td>\n<td>\u2264 2.0%<\/td>\n<td>\ud0c8\uc0b0\uc81c, \uc624\uc2a4\ud14c\ub098\uc774\ud2b8 \ud615\uc131\uc81c<\/td>\n<\/tr>\n<tr>\n<td>\ubab0\ub9ac\ube0c\ub374 (Mo)<\/td>\n<td>\uc5c6\uc74c \/ \ubbf8\ub7c9<\/td>\n<td>\uc5c6\uc74c; \uc774\uac83\uc774 A4\/316\uacfc\uc758 \ucc28\uc774\uc810\uc785\ub2c8\ub2e4<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>18-8 \ub300 304 \ub300 A2: \uc138\ubd80 \uc0ac\ud56d<\/h3>\n<p>\uc11c\ub85c \uacb9\uce58\uc9c0\ub9cc \uc644\ubcbd\ud558\uac8c \uc0c1\ud638 \uad50\ud658 \uac00\ub2a5\ud55c \uac83\uc740 \uc544\ub2d9\ub2c8\ub2e4. <em>\uba85\uce6d<\/em>. <strong>18-8<\/strong> \ub294 \uacc4\uc5f4 \uc6a9\uc5b4\uc774\ubbc0\ub85c Cr 18% \ubc0f Ni 8% \uadfc\ucc98\uc758 \ubaa8\ub4e0 \uac83\uc774 302 \ubc0f 305\ub97c \ud3ec\ud568\ud558\uc5ec \ud574\ub2f9\ub429\ub2c8\ub2e4. <strong>304<\/strong> \ub294 \uc5c4\uaca9\ud558\uac8c \uad00\ub9ac\ub418\ub294 \ud55c\uacc4\ub97c \uac00\uc9c4 \ud2b9\uc815 ASTM \ub4f1\uae09(UNS S30400)\uc785\ub2c8\ub2e4. <strong>A2<\/strong> \ub294 <em>\uccb4\uacb0 \ubd80\ud488<\/em> ISO 3506\uc758 \uba85\uce6d\uc774\uba70, \ubcfc\ud2b8 \uc81c\uc791\uc5d0 \uc0ac\uc6a9\ub418\ub294 304 \ub610\ub294 304L \uc7ac\uc9c8\uc5d0 \ud574\ub2f9\ud569\ub2c8\ub2e4. \ub530\ub77c\uc11c \ub204\uad70\uac00 A2-70 \ubcfc\ud2b8\ub97c \uac74\ub124\uc8fc\uba70 \u201c\uc774\uac70 18-8\uc778\uac00\uc694?\u201d\ub77c\uace0 \ubb3b\ub294\ub2e4\uba74, \uc815\uc9c1\ud55c \ub2f5\ubcc0\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4: \ub124, \ud574\ub2f9 \uacc4\uc5f4\uc758 18-8 \uac15\ucca0\ub85c \ub9cc\ub4e4\uc5b4\uc84c\uc73c\uba70, \ud2b9\ud788 \ud574\ub2f9 \uacc4\uc5f4 \ub0b4\uc758 304 \ub4f1\uae09\uc785\ub2c8\ub2e4. \uc2e4\uc81c \ud558\ub4dc\uc6e8\uc5b4\uc5d0\uc11c \uc774\ub7ec\ud55c \ub4f1\uae09\uc774 \uc5b4\ub5bb\uac8c \uc870\ud569\ub418\ub294\uc9c0\uc5d0 \ub300\ud55c \ub354 \uc790\uc138\ud55c \ub0b4\uc6a9\uc740 \uc800\ud76c \uac00\uc774\ub4dc\uc778 <a href=\"https:\/\/productionscrews.com\/ko\/bolt-nut-stainless-steel\/\" target=\"_blank\">\ubcfc\ud2b8 \ubc0f \ub108\ud2b8 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15 \ub4f1\uae09<\/a> \ub9de\ub294 \ubcfc\ud2b8\uc640 \ub108\ud2b8\ub97c \ub9de\ucdb0\uc11c \uc0b4\ud3b4\ubd05\ub2c8\ub2e4.<\/p>\n<p>\uc790\uae30\ub825\uc5d0 \uad00\ud55c \uc2e4\uc6a9\uc801\uc778 \ucc38\uace0 \uc0ac\ud56d \ud558\ub098, \uc790\uc8fc \uc5b8\uae09\ub418\uae30 \ub54c\ubb38\uc5d0: \ud480\ub9bc \ucc98\ub9ac\ub41c 304\ub294 \ube44\uc790\uc131\uc801\uc774\uc9c0\ub9cc <strong>\ub0c9\uac04 \uac00\uacf5\ub41c A2-70\uc740 \uc57d\uac04\uc758 \uc790\uc131\uc744 \ubcf4\uc77c \uc218 \uc788\uc2b5\ub2c8\ub2e4<\/strong>. 700 MPa\ub97c \ubd80\uc5ec\ud558\ub294 \ub0c9\uac04 \uc778\ubc1c\uc740 \uc57d\uac04\uc758 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ub97c \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8\ub85c \uc804\ud658\uc2dc\ud0a4\uba70, \uc790\uc11d\uc774 \uc7a1\uc544\ub2f9\uae41\ub2c8\ub2e4. \uc57d\uac04 \uc790\uc131\uc744 \ub764 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \ubcfc\ud2b8\ub294 \uac00\uc9dc\uac00 \uc544\ub2d9\ub2c8\ub2e4. \ub2e8\uc9c0 \uac00\uacf5 \uacbd\ud654\ub41c \uac83\ubfd0\uc785\ub2c8\ub2e4.<\/p>\n<h2>A2-70 vs A2-50 vs A2-80: \uc131\uc9c8 \ub4f1\uae09 \uc124\uba85<\/h2>\n<p><strong>A2-50, A2-70, A2-80\uc740 \ub3d9\uc77c\ud55c 304 \uac15\ucca0\ub85c, \uac01\uac01 500, 700, 800 MPa\uc758 \uac15\ub3c4 \uc218\uc900\uc744 \uac00\uc9c0\uba70, \uc774\ub294 \ub0c9\uac04 \uc778\ubc1c\ub41c \ubc14\uc758 \uac15\ub3c4\uc5d0 \ub530\ub77c \uacb0\uc815\ub429\ub2c8\ub2e4.<\/strong><\/p>\n<p>\ud569\uae08\uc774 \ub3d9\uc77c\ud558\ubbc0\ub85c, \uc131\uc9c8 \ub4f1\uae09\uc740 \uc21c\uc218\ud558\uac8c \uae30\uacc4\uc801 \uac00\uacf5\uc5d0 \uad00\ud55c \uac83\uc785\ub2c8\ub2e4. \uc774\ub294 \ub300\uccb4\ud560 \ub54c \uc911\uc694\ud558\uba70: A2-80 \ubcfc\ud2b8\ub294 <em>\ub354 \uac15\ud55c<\/em> A2-70\ubcf4\ub2e4 \uac15\ud558\uc9c0\ub9cc, \ubd80\uc2dd \uc800\ud56d\uc131\uc740 \ub354 \ub192\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \uc65c\ub0d0\ud558\uba74 \ud654\ud559 \uc131\ubd84\uc774 \ubcc0\ud558\uc9c0 \uc54a\uc558\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4.<\/p>\n<table>\n<thead>\n<tr>\n<th>\ub4f1\uae09<\/th>\n<th>\uc778\uc7a5 \ucd5c\uc18c<\/th>\n<th>\uc99d\uba85 \uc751\ub825 \ucd5c\uc18c<\/th>\n<th>\uacf5\uae09 \uc870\uac74<\/th>\n<th>\uc77c\ubc18 \uc6a9\ub3c4<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>A2-50<\/td>\n<td>500 MPa<\/td>\n<td>210 MPa<\/td>\n<td>\ud480\ub9bc \ucc98\ub9ac (\uc5f0\uc131)<\/td>\n<td>\uc131\ud615\/\uad7d\ud798\uc774 \ud544\uc694\ud55c \uacf3, \ub0ae\uc740 \ud558\uc911<\/td>\n<\/tr>\n<tr>\n<td>A2-70<\/td>\n<td>700 MPa<\/td>\n<td>450 MPa<\/td>\n<td>\ub0c9\uac04 \uc778\ubc1c<\/td>\n<td>\uc77c\ubc18 \uc6a9\ub3c4 \uae30\ubcf8\uac12<\/td>\n<\/tr>\n<tr>\n<td>A2-80<\/td>\n<td>800 MPa<\/td>\n<td>600 MPa<\/td>\n<td>\ub300\ub2e8\ud788 \ub0c9\uac04 \uc778\ubc1c<\/td>\n<td>\uace0\ud558\uc911 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc870\uc778\ud2b8<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>A2-70\uc740 \uc801\uc808\ud55c \uac15\ub3c4\ub97c \uac16\ucd94\uace0 \uc788\uc2b5\ub2c8\ub2e4: \ub300\ubd80\ubd84\uc758 \uad6c\uc870 \ubc0f \uae30\uacc4\uc6a9\ub3c4\uc5d0 \ucda9\ubd84\ud788 \uac15\ud558\uba70, \uc5ec\uc804\ud788 \uc5f0\uc131\uc774 \ub6f0\uc5b4\ub098\uace0 \uac00\uc7a5 \ub9ce\uc774 \uc7ac\uace0\ub418\ub294 \ub4f1\uae09\uc785\ub2c8\ub2e4. A2-50\uc740 \ud2c8\uc0c8 \uc2dc\uc7a5\uc785\ub2c8\ub2e4. \ub098\uc0ac \ud6c4 \uc131\ud615\ub418\ub294 \ubd80\ud488\uc5d0 \uc9c0\uc815\ud558\uba70, \ubd80\ub4dc\ub7ec\uc6b4 \uc7ac\uc9c8\uc740 \uae68\uc9c0\uc9c0 \uc54a\uace0 \uad6c\ubd80\ub7ec\uc9d1\ub2c8\ub2e4. A2-80\uc740 \uc124\uacc4\uc790\uac00 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \ub0b4\uc2dd\uc131\uc744 \uc6d0\ud560 \ub54c \ub098\ud0c0\ub0a9\ub2c8\ub2e4. <em>\ubc0f<\/em> \uc911\uac04\uae09 \ud0c4\uc18c \ubcfc\ud2b8\uc5d0 \uac00\uae4c\uc6b4 \uac15\ub3c4\uc785\ub2c8\ub2e4. \uc774\ub4e4\uc774 \ubaa8\ub4e0 \ud328\uc2a4\ub108 \uacc4\uc5f4\uc5d0\uc11c \uc5b4\ub5bb\uac8c \ube44\uad50\ub418\ub294\uc9c0 \ub354 \ub113\uac8c \uc0b4\ud3b4\ubcf4\ub824\uba74, \uc6b0\ub9ac\uc758 \uac1c\uc694\ub97c \ucc38\uc870\ud558\uc138\uc694. <a href=\"https:\/\/productionscrews.com\/ko\/grades-of-bolts\/\" target=\"_blank\">SAE, \ubbf8\ud130\ubc95, \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2dc\uc2a4\ud15c \uc804\ubc18\uc758 \ubcfc\ud2b8 \ub4f1\uae09 \ube44\uad50<\/a>.<\/p>\n<h2>A2-70 \ub300 A4-70: 304 \ub300 316 \ub0b4\uc2dd\uc131 \ucc28\uc774<\/h2>\n<p><strong>A2-70\uacfc A4-70\uc740 \ub3d9\uc77c\ud55c 700 MPa \uac15\ub3c4\ub97c \uac00\uc9c0\uba70, A4\ub294 \ubab0\ub9ac\ube0c\ub374\uc774 \ucca8\uac00\ub41c 316 \uc2a4\ud14c\uc778\ub9ac\uc2a4\ub85c, \uc5fc\ubd84, \uc5fc\ud654\ubb3c, \ud574\uc591 \ud658\uacbd\uc5d0 \ud6e8\uc52c \ub354 \ub6f0\uc5b4\ub09c \ub0b4\uc2dd\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/strong> [E-E-A-T]<\/p>\n<p>\uad6c\uae00\uc758 \ub450 \ubc88\uc9f8 '\uc774 \uc8fc\uc81c\uc5d0 \ub300\ud574 \uc0ac\ub78c\ub4e4\uc774 \ubb3b\ub294 \uc9c8\ubb38'\uc740 \u201cA4-70\uc774 316\uacfc \uac19\uc740\uac00\uc694?\u201d\uc774\uba70, \ub2f5\ubcc0\uc740 \uc608, \uc815\ud655\ud788 A2\uac00 304\uc5d0 \ub9e4\ud551\ub418\ub294 \uac83\uacfc \uac19\uc2b5\ub2c8\ub2e4. \uac15\ub3c4 \uc22b\uc790 \u201c70\u201d\uc740 \ub450 \uacbd\uc6b0 \ubaa8\ub450 \uac19\uc740 700 MPa\ub97c \uc758\ubbf8\ud569\ub2c8\ub2e4. \ubcc0\uacbd\ub418\ub294 \uac83\uc740 \ub0b4\uc2dd\uc131 \uc774\uc57c\uae30\uc774\uba70, \uc774\ub294 \uc804\uccb4 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \ud328\uc2a4\ub108 \uc138\uacc4\uc5d0\uc11c \uac00\uc7a5 \uc911\uc694\ud55c \uc2e4\uc6a9\uc801 \ucc28\uc774\uc810\uc785\ub2c8\ub2e4.<\/p>\n<p>\ucc28\uc774\uc810\uc740 \ud55c \uac00\uc9c0 \uc6d0\uc18c\uc785\ub2c8\ub2e4: <strong>\ubab0\ub9ac\ube0c\ub374<\/strong>. A4\/316\uc740 \uc57d 2~3%\uc758 Mo\ub97c \ud3ec\ud568\ud558\uace0 \uc788\uc73c\uba70, A2\/304\ub294 \uc804\ud600 \ud3ec\ud568\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \uadf8 \ubab0\ub9ac\ube0c\ub374\uc740 <em>\ud53c\ud305<\/em> \ubc0f <em>\ud2c8\uc0c8 \ubd80\uc2dd<\/em>\uc5d0 \ub300\ud55c \uc800\ud56d\ub825\uc744 \uadf9\uc801\uc73c\ub85c \ud5a5\uc0c1\uc2dc\ud0b5\ub2c8\ub2e4. \uc774\ub294 \uc5fc\ud654\ubb3c(\ub3c4\ub85c \uc5fc, \ubc14\ub2f7\ubb3c \uc2a4\ud504\ub808\uc774, \uc218\uc601\uc7a5 \ud654\ud559\uc57d\ud488)\uc774 \uc218\ub3d9 \ud53c\ub9c9\uc744 \ud30c\uad34\ud560 \ub54c \ubc1c\uc0dd\ud558\ub294 \uad6d\uc18c \uacf5\uaca9\uc785\ub2c8\ub2e4. <a href=\"https:\/\/en.wikipedia.org\/wiki\/SAE_316_stainless_steel\" target=\"_blank\" rel=\"noopener\">\uc704\ud0a4\ubc31\uacfc\uc758 SAE 316 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uac15\uc5d0 \uad00\ud55c \ud56d\ubaa9<\/a> \uc740 \uadf8 \ubab0\ub9ac\ube0c\ub374 \ud568\ub7c9\uc774 316\uc744 \ud574\uc591 \ubc0f \uc5fc\ud654\ubb3c \ub178\ucd9c \uc11c\ube44\uc2a4\uc5d0 \ud45c\uc900 \uc120\ud0dd\uc73c\ub85c \ub9cc\ub4dc\ub294 \uc774\uc720\uc774\uba70, 304\ub294 \ucc9c\ucc9c\ud788 \ud53c\ud305\ub429\ub2c8\ub2e4.<\/p>\n<table>\n<thead>\n<tr>\n<th>\ub4f1\uae09 \uc30d<\/th>\n<th>\uae30\ubcf8 \uac15\ucca0<\/th>\n<th>\ubab0\ub9ac\ube0c\ub374<\/th>\n<th>\ucd5c\uc801 \ud658\uacbd<\/th>\n<th>\ud53c\ud574\uc57c \ud569\ub2c8\ub2e4<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>A2-70<\/td>\n<td>304 \/ 18-8<\/td>\n<td>\uc5c6\uc74c<\/td>\n<td>\uc2e4\ub0b4, \uc77c\ubc18 \uc57c\uc678, \uc2dd\ud488 \uc548\uc804<\/td>\n<td>\ud574\uc548, \ud574\uc591, \uc5fc\ud654\ubb3c \ub2e4\ub7c9<\/td>\n<\/tr>\n<tr>\n<td>A4-70<\/td>\n<td>316<\/td>\n<td>2\uc5d0\uc11c 3%<\/td>\n<td>\ud574\uc591, \ud574\uc548, \uc218\uc601\uc7a5, \ud654\ud559<\/td>\n<td>(\uac74\uc870 \uc2e4\ub0b4 \uc0ac\uc6a9\uc5d0\ub294 \uacfc\ub3c4\ud55c \uc120\ud0dd)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\uad6c\ub9e4 \uaddc\uce59\uc740 \uac04\ub2e8\ud569\ub2c8\ub2e4. \ub9cc\uc57d \ud328\uc2a4\ub108\uac00 \uc5b8\uc820\uac00 <strong>\uc5fc\uc218, \ubc14\ub2f7\ubc14\ub78c, \uc81c\ube59\uc5fc \ub610\ub294 \uc218\uc601\uc7a5 \ud654\ud559\ubb3c\uc9c8\uc5d0 \ub178\ucd9c\ub420 \uac00\ub2a5\uc131\uc774 \uc788\ub2e4\uba74<\/strong>, A4-70\uc5d0 \ucd94\uac00 \ube44\uc6a9\uc744 \uc9c0\ubd88\ud558\uc138\uc694. \uadf8 \uc678\uc758 \uacbd\uc6b0, \uc989 \uc2e4\ub0b4 \uc7a5\ube44, \uc77c\ubc18 \uac74\uc124, \uc9ed\uc9e4\ud558\uc9c0 \uc54a\uc740 \uc2dd\ud488 \uac00\uacf5\uc5d0\ub294 A2-70\uc774 \uc801\ud569\ud558\uace0 \ube44\uc6a9 \ud6a8\uc728\uc801\uc778 \uc120\ud0dd\uc785\ub2c8\ub2e4. A2\ub85c \ucda9\ubd84\ud55c \uacf3\uc5d0 A4\ub97c \uc0ac\uc6a9\ud558\ub294 \uac83\uc740 \uc870\ub2ec \uc2dc \ud754\ud788 \ubcfc \uc218 \uc788\ub294 \uacfc\uc789 \uc0ac\uc591\uc785\ub2c8\ub2e4. \uc6b0\ub9ac\uc758 <a href=\"https:\/\/productionscrews.com\/ko\/stainless-fasteners\/\" target=\"_blank\">\uc2a4\ud14c\uc778\ub9ac\uc2a4 \ud328\uc2a4\ub108 \uad6c\ub9e4\uc790 \uac00\uc774\ub4dc<\/a> \ub354 \uae34 \ubc84\uc804\uc744 \uc6d0\ud55c\ub2e4\uba74 \uc0b0\uc5c5\ubcc4\ub85c A2\/A4 \uc120\ud0dd \uae30\uc900\uc744 \uc124\uba85\ud569\ub2c8\ub2e4.<\/p>\n<h2>A2-70\uc774 \uc0ac\uc6a9\ub418\ub294 \uacf3\uacfc \uc870\uc6a9\ud788 \uc2e4\ud328\ud558\ub294 \uacf3<\/h2>\n<p><strong>A2-70\uc740 \uc2e4\ub0b4, \uc77c\ubc18 \uc57c\uc678 \uac74\uc124, \uc2dd\ud488 \uac00\uacf5, \uae30\uacc4 \ubd84\uc57c\uc5d0\uc11c \ub6f0\uc5b4\ub098\uc9c0\ub9cc, \ud574\uc591, \ud574\uc548 \ub610\ub294 \uac15\ud55c \uc5fc\uc18c \ud658\uacbd\uc5d0\uc11c\ub294 \ud53c\ud2b8\ub418\uace0 \uc5bc\ub8e9\uc9c8 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/strong><\/p>\n<p>\uac15\ub3c4\uc640 \ubd80\uc2dd \uc800\ud56d\uc758 \uade0\ud615 \ub355\ubd84\uc5d0 A2-70\uc740 \ub2e4\uc591\ud55c \uc0b0\uc5c5 \ubd84\uc57c\uc5d0\uc11c \uae30\ubcf8 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \ud328\uc2a4\ub108\ub85c \uc790\ub9ac \uc7a1\uace0 \uc788\uc2b5\ub2c8\ub2e4. \uadf8 \ubc94\uc704\uc758 <em>\uacbd\uacc4<\/em> \ub97c \uc544\ub294 \uac83\uc774 20\ub144 \ub3d9\uc548 \uc9c0\uc18d\ub418\ub294 \uaddc\uaca9\uacfc 18\uac1c\uc6d4 \ub9cc\uc5d0 \ub179\uc774 \uc2ac\uae30 \uc2dc\uc791\ud558\ub294 \uaddc\uaca9\uc744 \uad6c\ubcc4\ud558\ub294 \ud3ec\uc778\ud2b8\uc785\ub2c8\ub2e4.<\/p>\n<p><img decoding=\"async\" alt=\"\ud574\uc548 \ud658\uacbd\uc5d0\uc11c \ubd80\uc2dd \ud55c\uacc4\ub97c \ubcf4\uc5ec\uc8fc\ub294 A2-70 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uac15 \ubcfc\ud2b8\" src=\"https:\/\/productionscrews.com\/wp-content\/uploads\/2026\/07\/a2-70-howto.jpg\" \/><\/p>\n<h3>\uc801\ud569\ud55c \uacf3<\/h3>\n<ul>\n<li><strong>\uc77c\ubc18 \uac74\uc124 \ubc0f \uac74\ucd95<\/strong>: \ub09c\uac04, \uc678\uc7a5 \uace0\uc815, \ud574\uc548\uc5d0\uc11c \ub5a8\uc5b4\uc9c4 \uad6c\uc870\uc801 \uc5f0\uacb0.<\/li>\n<li><strong>\uc2dd\uc74c\ub8cc \uc7a5\ube44<\/strong>: 304\ub294 \uc2dd\ud488 \ub4f1\uae09 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uc758 \ub300\ud45c\uc8fc\uc790\uc774\ubbc0\ub85c, A2-70 \ud328\uc2a4\ub108\ub294 \ud0f1\ud06c, \ucee8\ubca0\uc774\uc5b4, \uac00\uacf5 \ub77c\uc778\uc5d0 \uc801\ud569\ud569\ub2c8\ub2e4.<\/li>\n<li><strong>\uae30\uacc4 \ubc0f \uc0b0\uc5c5 \uc870\ub9bd<\/strong>: \ud38c\ud504, \uc778\ud074\ub85c\uc800, \ud504\ub808\uc784, \uadf8\ub9ac\uace0 \uc57d\uac04\uc758 \uc2b5\uae30\uac00 \uc874\uc7ac\ud558\ub294 \uc7a5\ube44.<\/li>\n<li><strong>\uc790\ub3d9\ucc28 (\ucc28\uccb4 \uc544\ub798 \uc81c\uc678)<\/strong>: \uc5d4\uc9c4\ub8f8, \ud2b8\ub9bc, \uadf8\ub9ac\uace0 \ub3c4\ub85c \uc5fc\ubd84\uc774 \ub2ff\uc9c0 \uc54a\ub294 \ub0b4\ubd80 \uace0\uc815 \ubd80\uc704.<\/li>\n<li><strong>5G \ubc0f \uc804\uc790\uae30\uae30 \uc778\ud074\ub85c\uc800<\/strong>: \ubd80\uc2dd \uc800\ud56d\uc131\uacfc \ube44\uc790\uc131 \ud2b9\uc131\uc774 \ub3c4\uc6c0\uc774 \ub418\ub294 \uae68\ub057\ud55c \uc2e4\ub0b4 \ud658\uacbd.<\/li>\n<\/ul>\n<h3>\uc2e4\ud328\ud558\ub294 \uacf3: \uc815\uc9c1\ud55c \ud55c\uacc4<\/h3>\n<p>\uc5ec\uae30\uc11c \uc2a4\ud399 \uc2dc\ud2b8\uac00 \uac70\uc758 \ub9d0\ud558\uc9c0 \uc54a\ub294 \ub0b4\uc6a9\uc785\ub2c8\ub2e4. A2-70\uc740 \uc2e4\uc81c \uc5fc\ud654\ubb3c \ud55c\uacc4\uac00 \uc788\uc2b5\ub2c8\ub2e4. \uc11c\ud551\uc5d0\uc11c \uba87\ubc31 \ubbf8\ud130 \uc774\ub0b4\uc5d0 \ub450\uac70\ub098, \ubcf4\ud2b8\uc5d0 \ubcfc\ud2b8\ub85c \uace0\uc815\ud558\uac70\ub098, \ubd81\ubd80 \uaca8\uc6b8\ucca0 \ub3c4\ub85c \uc5fc\uc218 \uc2a4\ud504\ub808\uc774\uc5d0 \ub178\ucd9c\uc2dc\ud0a4\uba74 \uc218\ub3d9 \ud53c\ub9c9\uc774 \uad6d\uc18c\uc801\uc73c\ub85c \ub6ab\ub9bd\ub2c8\ub2e4. \uadf8 \uacb0\uacfc\ub294 <strong>\ud53c\ud305<\/strong>, \uc989 \uc791\uc740 \uae4a\uc740 \ubd80\uc2dd \ud06c\ub808\uc774\ud130\uc640, \ubcfc\ud2b8\uac00 \uad6c\uc870\uc801\uc73c\ub85c \uac74\uc804\ud558\ub354\ub77c\ub3c4 \uac71\uc815\uc744 \ub07c\uce58\ub294 \ub179 \uc5bc\ub8e9\uc774 \uc0dd\uae41\ub2c8\ub2e4. \ubc00\ud3d0\ub418\uace0 \uc2b5\ud558\uba70 \uc0b0\uc18c\uac00 \uc801\uc740 \ud2c8\uc0c8\uc5d0\uc11c\ub294 <em>\ud2c8\uc0c8 \ubd80\uc2dd<\/em>, \ub610\ud55c \ubcfc \uc218 \uc5c6\uae30 \ub54c\ubb38\uc5d0 \ub354 \ub098\uc069\ub2c8\ub2e4.<\/p>\n<p>\ub450 \ubc88\uc9f8 \uc2e4\ud328 \ubaa8\ub4dc\ub294 <strong>\uac00\ub9c1(galling)<\/strong>. \uc2a4\ud14c\uc778\ub9ac\uc2a4-\uc628-\uc2a4\ud14c\uc778\ub9ac\uc2a4 \ub098\uc0ac\uc120\uc740 \ud1a0\ud06c \ud558\uc5d0\uc11c \ub0c9\uac04 \uc6a9\uc811\ub418\uc5b4 \ubcfc\ud2b8\uc640 \ub108\ud2b8\ub97c \ud558\ub098\uc758 \uc4f8\ubaa8\uc5c6\ub294 \ub369\uc5b4\ub9ac\ub85c \uace0\ucc29\uc2dc\ud0ac \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub294 \uac15\ub3c4 \ubb38\uc81c\uac00 \uc544\ub2c8\ub77c \ub9c8\ucc30 \ubb38\uc81c\uc774\uba70, A2-70\uc740 \uc5b4\ub5a4 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\uacc4 \ub4f1\uae09\ub9cc\ud07c\uc774\ub098 \uadf8\ub807\uc2b5\ub2c8\ub2e4. \ud574\uacb0\ucc45\uc740 \ub098\uc0ac\uc120\uc5d0 \ubc29\uccad\uc720\ub97c \ubc14\ub974\uace0, \uc124\uce58 \uc18d\ub3c4\ub97c \uc870\uc808\ud558\ub294 \uac83\uc785\ub2c8\ub2e4. \uc784\ud329\ud2b8 \ub4dc\ub77c\uc774\ubc84\ub85c \uc2a4\ud14c\uc778\ub9ac\uc2a4 \ub108\ud2b8\ub97c \ube60\ub974\uac8c \ub3cc\ub9ac\uc9c0 \ub9c8\uc2ed\uc2dc\uc624.<\/p>\n<blockquote>\n<p><strong>\uc804\ubb38\uac00 \ud301:<\/strong> \ub9cc\uc57d A2-70 \uace0\uc815\uad6c\uac00 \ud45c\uba74\uc5d0 \ub179\uc774 \uc2ac\uc5c8\uc9c0\ub9cc \ud658\uacbd\uc774 \ud574\uc591\uc774 \uc544\ub2c8\ub77c\uba74, \uc77c\ubc18\uc801\uc778 \uc6d0\uc778\uc740 <em>\uc624\uc5fc<\/em>: \uc5f0\ub9c8\uae30 \ub610\ub294 \uc640\uc774\uc5b4 \ube0c\ub7ec\uc2dc\uc5d0\uc11c \ub098\uc628 \ud0c4\uc18c\uac15 \uc785\uc790\uac00 \ud45c\uba74\uc5d0 \ubc15\ud600 \uc788\ub294 \uacbd\uc6b0\uc785\ub2c8\ub2e4. \ud328\uc2dc\ubca0\uc774\uc158 \ucc98\ub9ac\ud558\uac70\ub098 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc548\uc804 \ubc29\ubc95\uc73c\ub85c \uc138\ucc99\ud558\uba74, \ubcfc\ud2b8 \uc790\uccb4\ub294 \uc544\ub9c8\ub3c4 \uad1c\ucc2e\uc744 \uac83\uc785\ub2c8\ub2e4.<\/p>\n<\/blockquote>\n<p>\uc774\uc640 \uac19\uc740 \ud63c\ub780\uc740 \uc5bc\ub9c8 \uc804 \ud574\uc548\uac00 \ub09c\uac04 \uc791\uc5c5\uc5d0\uc11c \uacbd\ud5d8\ud55c \uc801\uc774 \uc788\uc2b5\ub2c8\ub2e4. \uc124\uce58\uc790\ub294 \ube44\uc6a9\uc744 \uc808\uac10\ud558\uae30 \uc704\ud574 A2-70\uc744 \uc9c0\uc815\ud588\uc73c\uba70, \ub09c\uac04\uc740 \ud574\uc218\uc120\uc5d0\uc11c \uc57d 300\ubbf8\ud130 \ub5a8\uc5b4\uc838 \uc788\uc5c8\uace0, \ub450 \uacc4\uc808 \ub0b4\uc5d0 \ubaa8\ub4e0 \ubcfc\ud2b8 \ud5e4\ub4dc\uc5d0 \uac08\uc0c9 \ud6c4\uad11\uc774 \uc0dd\uacbc\uc2b5\ub2c8\ub2e4. \uac15\ucca0\uc740 \uacb0\ud568\uc774 \uc544\ub2c8\uc5c8\uc2b5\ub2c8\ub2e4. \ub2e8\uc21c\ud788 \uc5fc\ubd84\uc774 \ub9ce\uc740 \uacf3\uc5d0 \uc801\ud569\ud558\uc9c0 \uc54a\uc740 \ub4f1\uae09\uc774\uc5c8\ub358 \uac83\uc785\ub2c8\ub2e4. \uad50\uccb4 \uc2dc A4-70\uc73c\ub85c \uad50\uccb4\ud558\uc790 \uc5bc\ub8e9\uc774 \uc644\uc804\ud788 \uc0ac\ub77c\uc84c\uc2b5\ub2c8\ub2e4. \uad50\ud6c8\uc740 \uba85\ud655\ud569\ub2c8\ub2e4: \u201c\ud574\uc548\u201d\uc774 \ub300\ud654\uc5d0 \ub4e4\uc5b4\uac00\uba74 A2-70\uc740 \uacbd\uc81c\uc801\uc778 \uc120\ud0dd\uc774 \uc544\ub2c8\uac8c \ub418\uace0, \uc624\ud788\ub824 \ub354 \ube44\uc2fc \uc120\ud0dd\uc774 \ub418\uba70, \ube44\uc6a9\uc774 \ub450 \ubc30\uac00 \ub429\ub2c8\ub2e4.<\/p>\n<p>\ub610\ud55c \uc911\uac04 \uc9c0\ub300\ub3c4 \uc54c\uace0 \uc788\uc5b4\uc57c \ud569\ub2c8\ub2e4. \uc608\uc0b0\uc774 A2-70\uc744 \ud55c\uacc4 \ud658\uacbd\uc5d0 \ub123\uac8c \ub9cc\ub4e0\ub2e4\uba74, \ubc00\ubd09\ub41c \uc124\uce58, \uc774\uc885 \uae08\uc18d \uac04\uc758 \uac08\ubc14\ub2c9 \uc811\ucd09\uc744 \ubc29\uc9c0\ud558\ub294 \uc808\uc5f0 \uc640\uc154, \uadf8\ub9ac\uace0 \uc815\uae30\uc801\uc778 \ub9d1\uc740 \ubb3c \uc138\ucc99\uc73c\ub85c \uc2dc\uac04\uc744 \ubc8c \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\uac83\ub4e4\uc774 A2\ub97c A4\ub85c \ubc14\uafb8\uc9c0\ub294 \uc54a\uc9c0\ub9cc, \ubd80\uc2dd\uc744 \ub2a6\ucd94\ub294 \ub370 \ub3c4\uc6c0\uc744 \uc90d\ub2c8\ub2e4. \ub098\uc911\uc5d0 \uc27d\uac8c \ub2e4\uc2dc \uc811\uadfc\ud560 \uc218 \uc5c6\ub294 \uacbd\uc6b0\uc5d0\ub294, \uc798\ubabb\ub41c \ub4f1\uae09\uc73c\ub85c \uacf5\ud559\uc801 \ud574\uacb0\ucc45\uc744 \ucc3e\uae30\ubcf4\ub2e4\ub294 \ucc98\uc74c\uc5d0 \uc801\ud569\ud55c \ub4f1\uae09\uc5d0 \ud22c\uc790\ud558\ub294 \uac83\uc774 \uc88b\uc2b5\ub2c8\ub2e4.<\/p>\n<h2>A2-70 \uace0\uc815\uad6c\ub97c \uc2dd\ubcc4\ud558\uace0 \uc120\ud0dd\ud558\ub294 \ubc29\ubc95<\/h2>\n<p><strong>\ubcfc\ud2b8 \ud5e4\ub4dc\uc5d0 \u2018A2-70\u2019 \uc2a4\ud0ec\ud504\uac00 \uc788\ub294\uc9c0 \ud655\uc778\ud558\uace0, \ubbf8\ud130\ubc95(mm) \ub098\uc0ac\uc0b0\uacfc \uae38\uc774\ub97c \ud655\uc778\ud558\uba70, \ub108\ud2b8 \ub4f1\uae09\uacfc \ud615\ud0dc\ub97c \ud558\uc911\uacfc \ud658\uacbd\uc5d0 \ub9de\uac8c \uc77c\uce58\uc2dc\ud0a4\uc138\uc694.<\/strong><\/p>\n<p>A2-70\uc744 \uc62c\ubc14\ub974\uac8c \uad6c\ub9e4\ud558\ub824\uba74 \uc138 \uac00\uc9c0 \uccb4\ud06c\uac00 \ud544\uc694\ud569\ub2c8\ub2e4: \ud45c\uae30 \uc77d\uae30, \ud06c\uae30 \ub9de\ucd94\uae30, \uadf8\ub9ac\uace0 \uc801\uc808\ud55c \ub108\ud2b8\uc640 \uc640\uc154\uc640 \uc9dd\uc9d3\uae30. \ud558\ub098\ub77c\ub3c4 \ud2c0\ub9ac\uba74, \ubcfc\ud2b8\uc758 \ub4f1\uae09\uacfc \uad00\uacc4\uc5c6\uc774 \uc870\uc778\ud2b8 \uc131\ub2a5\uc774 \ub5a8\uc5b4\uc9d1\ub2c8\ub2e4.<\/p>\n<h3>\ud5e4\ub4dc \ud45c\uae30 \uc77d\uae30<\/h3>\n<p>\uc9c4\uc9dc A2-70 \uace0\uc815\uad6c\ub294 \ud5e4\ub4dc\uc5d0 \uc2a4\ud0ec\ud504\uac00 \uc788\uc2b5\ub2c8\ub2e4: \uc81c\uc870\uc0ac\uc758 \ub9c8\ud06c\uc640 <strong>\u201cA2-70\u201d<\/strong> (\uac00\ub054\uc740 \u201cA2\u201d\uc640 \u201c70\u201d\uc774 \ubcc4\ub3c4\ub85c \ud45c\uc2dc\ub428). \ub4f1\uae09\uc774 \uc9c0\uc815\ub41c \ubcfc\ud2b8\uc5d0 \uc2a4\ud0ec\ud504\uac00 \uc5c6\ub2e4\uba74 \ubb38\uc81c\uac00 \ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc791\uc740 \ud06c\uae30\uc5d0\uc11c\ub294 \ud45c\uae30\uac00 \ucd95\uc57d\ub420 \uc218 \uc788\uc9c0\ub9cc, \uc2e0\ub8b0\ud560 \uc218 \uc788\ub294 \uacf5\uae09\uc5c5\uccb4\ub294 \ud3ec\uc7a5\uacfc \uc778\uc99d\uc11c\uc5d0 \ub4f1\uae09\uc744 \uba85\ud655\ud788 \uae30\ub85d\ud569\ub2c8\ub2e4.<\/p>\n<h3>\ud06c\uae30 \ub9de\ucd94\uae30 (mm \ub2e8\uc704)<\/h3>\n<p>A2-70 \ub098\uc0ac\ub294 \ubbf8\ud130\ubc95\uc785\ub2c8\ub2e4. \uc774 \ud0a4\uc6cc\ub4dc\uc640 \uad00\ub828\ub41c \uac80\uc0c9\uc5b4 (\u201cA2-70 \ubcfc\ud2b8 \ud06c\uae30 in mm\u201d, \u201cA2-70 \uc721\uac01 \ubcfc\ud2b8\u201d, \u201cA2-70 \uc568\ub7f0 \ubcfc\ud2b8\u201d, \u201cA2-70 \ub108\ud2b8\u201d) \ubaa8\ub450 \ub3d9\uc77c\ud55c \ud544\uc694\ub97c \uac00\ub9ac\ud0b5\ub2c8\ub2e4: \ub098\uc0ac\uc0b0 \uc9c1\uacbd(M-\ud45c\uae30), \ud53c\uce58, \uae38\uc774\ub97c \uadc0\ud558\uc758 \uc6a9\ub3c4\uc5d0 \ub9de\uac8c \ub9de\ucd94\ub294 \uac83. \uc77c\ubc18\uc801\uc778 \ud06c\uae30 \uc9c8\ubb38\uc740 \ub098\uc0ac\uc0b0 \ud53c\uce58\ub85c \uc5f0\uacb0\ub418\uba70, \uc774\uc5d0 \ub300\ud55c \uc124\uba85\uc740 <a href=\"https:\/\/productionscrews.com\/ko\/what-is-thread-pitch\/\" target=\"_blank\">\ub098\uc0ac\uc0b0 \ud53c\uce58\ub780 \ubb34\uc5c7\uc778\uac00<\/a> \uba54\ud2b8\ub9ad \uc2a4\ud14c\uc778\ub9ac\uc2a4\uc758 \uac70\uce60\uae30\uc640 \ubbf8\uc138\uae30<\/p>\n<p>\uc0ac\uc6a9 \uac00\ub2a5\ud55c \ud615\ud0dc\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n<ol>\n<li><strong>\uc721\uac01 \uba38\ub9ac \ubcfc\ud2b8<\/strong>: \uad6c\uc870\uc6a9 \ubc0f \uae30\uacc4 \uc791\uc5c5\uc744 \uc704\ud55c \uc77c\ubc18\uc6a9 \uae30\ubcf8\ud615.<\/li>\n<li><strong>\uc18c\ucf13 \ucea1(\uc568\ub7f0) \ub098\uc0ac<\/strong>: \uc624\ubaa9\ud558\uac70\ub098 \uc881\uc740 \uacf5\uac04\uc5d0 \uc801\ud569\ud55c \uc7a5\ucc29\uc6a9; \ucc3e\uc544\ubcf4\uc138\uc694 <a href=\"https:\/\/productionscrews.com\/ko\/hexagon-socket-screws\/\" target=\"_blank\">\uc721\uac01 \uc18c\ucf13 \ub098\uc0ac<\/a> \ubc94\uc704\uc5d0 \ub9de\uac8c.<\/li>\n<li><strong>\ud50c\ub79c\uc9c0 \ubcfc\ud2b8<\/strong>: \ud558\uc911 \ubd84\uc0b0\uc744 \uc704\ud55c \uc77c\uccb4\ud615 \uc640\uc154 \uba74.<\/li>\n<li><strong>A2-70 \uc721\uac01 \ub108\ud2b8 \ubc0f \uc640\uc154 \ub9e4\uce6d<\/strong>: \ud56d\uc0c1 \uac19\uc740 \ub4f1\uae09\ub07c\ub9ac \uc9dd\uc9c0\uc5b4 \uc57d\ud55c \uc5f0\uacb0\uc744 \ubc29\uc9c0\ud558\uc138\uc694.<\/li>\n<\/ol>\n<h3>\uad6c\ub9e4 \uccb4\ud06c\ub9ac\uc2a4\ud2b8<\/h3>\n<ul>\n<li>\ud655\uc778\ud558\uc138\uc694 <strong>A2-70 \uba38\ub9ac \ud45c\uc2dd<\/strong> \uad6c\uc870\uc6a9 \uc791\uc5c5\uc5d0 \ub300\ud55c \uc7ac\ub8cc \uc778\uc99d\uc11c\ub97c \uc694\uccad\ud558\uc138\uc694.<\/li>\n<li>\uba85\uc2dc\ud558\uc138\uc694 <strong>\ubbf8\ud130\ubc95 \ud06c\uae30<\/strong> (\uc608: M8 \u00d7 1.25 \u00d7 40), \uc9c1\uacbd, \ud53c\uce58, \uae38\uc774\ub97c \uc758\ubbf8\ud569\ub2c8\ub2e4.<\/li>\n<li>\uac80\uc99d\ud558\uc2ed\uc2dc\uc624 <strong>\ud658\uacbd\uc774 \ud574\uc591\/\uc5fc\ud654\ubb3c\uc774 \uc544\ub2d8\uc744<\/strong> \ud655\uc778\ud558\uc2ed\uc2dc\uc624. \ub9cc\uc57d \uadf8\ub807\ub2e4\uba74 A4-70\uc73c\ub85c \uc804\ud658\ud558\uc2ed\uc2dc\uc624.<\/li>\n<li>\ud398\uc5b4\ub9c1\ud558\uc2ed\uc2dc\uc624 <strong>\uac19\uc740 \ub4f1\uae09\uc758 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \ub108\ud2b8\uc640 \uc640\uc154\uc640<\/strong>, \uadf8\ub9ac\uace0 \uacc4\ud68d\ud558\uc2ed\uc2dc\uc624 <strong>\ubc29\uccad\uc81c<\/strong> \uac00\uacf5 \ub9c8\ucc30 \ubc29\uc9c0\ub97c \uc704\ud574<\/li>\n<li>\ub300\ub7c9 \ub610\ub294 \ub9de\ucda4\ud615 \ud544\uc694 \uc2dc, \uacf5\uae09\uc790\uac00 ISO 3506-1\uc5d0 \ub530\ub77c \uc0dd\uc0b0\ud560 \uc218 \uc788\ub294\uc9c0 \ud655\uc778\ud558\uace0 \uc2dc\ud5d8 \ub370\uc774\ud130\ub97c \uc81c\uacf5\ud558\uc2ed\uc2dc\uc624.<\/li>\n<\/ul>\n<h3>\uc778\uc99d\uc11c: \uc2e4\uc81c\ub85c \uc694\uccad\ud574\uc57c \ud558\ub294 \uac83<\/h3>\n<p>\uad6c\uc870\uc801 \ub610\ub294 \uc548\uc804 \uad00\ub828 \uc0ac\ud56d\uc758 \uacbd\uc6b0, \ud5e4\ub4dc \uc2a4\ud0ec\ud504\ub9cc\uc73c\ub85c\ub294 \ucda9\ubd84\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \uc7ac\ub8cc \uc2dc\ud5d8 \uc131\uc801\uc11c, \uc77c\ubc18\uc801\uc73c\ub85c EN 10204 3.1 \uc778\uc99d\uc11c\ub97c \uc694\uccad\ud558\uc2ed\uc2dc\uc624. \uc774\ub294 \ud2b9\uc815 \ubc30\uce58\uc758 \ud654\ud559 \uc131\ubd84\uacfc \uae30\uacc4\uc801 \uacb0\uacfc\ub97c \uc5f0\uacb0\ud558\ub294 \ubb38\uc11c\uc785\ub2c8\ub2e4. \uc774\uac83\uc774 A2-70 \ubcfc\ud2b8\uac00 \uc9c4\uc9dc 304 \ub4f1\uae09 \uac15\ucca0\ub85c \ub0c9\uac04 \uac00\uacf5\ub418\uc5b4 700 MPa\uc758 \uc778\uc7a5 \uac15\ub3c4\ub97c \uac16\ub294 \uac83\uc744 \uc99d\uba85\ud558\ub294 \uc99d\uac70\uc785\ub2c8\ub2e4. \uc704\uc870 \ub610\ub294 \uc0ac\uc591 \ubbf8\ub2ec \uc2a4\ud14c\uc778\ub9ac\uc2a4 \ud328\uc2a4\ub108\ub294 \uc800\uac00 \uacf5\uae09 \ucc44\ub110\uc5d0\uc11c \uc2e4\uc81c \ubb38\uc81c\uc774\uba70, \uac00\uc7a5 \uc2e0\ub8b0\ud560 \uc218 \uc788\ub294 \ubc29\uc5b4\ub294 \uc81c\uc870\uc5c5\uccb4\uc758 \uc2dc\ud5d8 \uc131\uc801\uc11c\uc785\ub2c8\ub2e4.<\/p>\n<p>\uc6b0\ub9ac\uac00 \ucd94\ucc9c\ud558\ub294 \uc2e4\ubb34 \uc791\uc5c5 \ud750\ub984: \uc8fc\ubb38\uc774 \ubc30\uc1a1\ub418\uae30 \uc804\uc5d0 \uc885\uc774\uc0c1\uc73c\ub85c \ub4f1\uae09\uacfc \ud06c\uae30\ub97c \ud655\uc778\ud558\uace0, \ub3c4\ucc29 \uc2dc \ud5e4\ub4dc \ub9c8\ud0b9\uc744 \ud45c\ubcf8 \uac80\uc0ac\ud558\uba70, \uc790\uc0b0\uc758 \uc218\uba85 \ub3d9\uc548 \uc778\uc99d\uc11c\ub97c \ubcf4\uad00\ud558\uc2ed\uc2dc\uc624. \uba87 \ubd84\uc774\uba74 \ub418\uba70, \u201c\uc774\uac83\ub4e4\uc774 A2-70\uc774\ub77c\uace0 \uc0dd\uac01\ud55c\ub2e4\u201d\uc640 \u201c\uc99d\uba85\ud560 \uc218 \uc788\ub2e4\u201d\uc758 \ucc28\uc774\uc785\ub2c8\ub2e4. \ud45c\uc900 \uce74\ud0c8\ub85c\uadf8 \uc678\uc758 \ub9de\ucda4 \ud06c\uae30, \ub098\uc0ac \ud615\uc0c1 \ub610\ub294 \ub9c8\uac10\uc758 \uacbd\uc6b0, \uc790\uccb4 \uc0dd\uc0b0\uc744 \ud558\ub294 \uc81c\uc870\uc5c5\uccb4\uac00 \ud544\uc694\uc5d0 \ub9de\ub294 \uc815\ud655\ud55c A2-70 \uc0ac\uc591\uc744 \ub9de\ucd9c \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<h2>A2-70 \ud2b8\ub80c\ub4dc: 2026\ub144 \uc774\ud6c4 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \ud328\uc2a4\ub108 \uc218\uc694<\/h2>\n<p><strong>\uc2a4\ud14c\uc778\ub9ac\uc2a4 \ud328\uc2a4\ub108 \uc218\uc694\ub294 \uc778\ud504\ub77c \uc7ac\uac1c\ubc1c, \uc7ac\uc0dd \uc5d0\ub108\uc9c0 \ud558\ub4dc\uc6e8\uc5b4, \ub354 \uc5c4\uaca9\ud55c \ubd80\uc2dd \uc218\uba85 \uc694\uad6c\ub85c \uc778\ud574 2026\ub144\uae4c\uc9c0 \uacc4\uc18d \uc99d\uac00\ud558\uba70, A2-70\uc774 \uc5ec\uc804\ud788 \uae30\ubcf8 \uc218\uc694\uc785\ub2c8\ub2e4.<\/strong><\/p>\n<p>\uc2a4\ud14c\uc778\ub9ac\uc2a4 \ud328\uc2a4\ub108 \uc2dc\uc7a5\uc740 \uc815\uccb4\ub418\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \uc55e\uc73c\ub85c \uba87 \ub144 \ub3d9\uc548 A2-70\uc774 \uc5b4\ub514\uc5d0 \uc801\ud569\ud55c\uc9c0 \ud615\uc131\ud558\ub294 \uba87 \uac00\uc9c0 \ud798\uc774 \uc788\uc73c\uba70, \uc774\ub294 \uc7a5\uae30 \uc218\uba85\uc744 \uc704\ud55c \uc0ac\uc591\uc744 \uc9c0\uc815\ud560 \ub54c \uc911\uc694\ud569\ub2c8\ub2e4.<\/p>\n<table>\n<thead>\n<tr>\n<th>\ucd94\uc138 (2026+)<\/th>\n<th>A2-70 \uc218\uc694\uc5d0 \ubbf8\uce58\ub294 \uc601\ud5a5<\/th>\n<th>\uad6c\ub9e4\uc790\uc5d0\uac8c \uc911\uc694\ud55c \uc810<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\uc778\ud504\ub77c \uc7ac\uac1c\ubc1c<\/td>\n<td>\uc77c\ubc18 \uad6c\uc870 \uace0\uc815\uc6a9 \ub300\ub7c9 \uc218\uc694 \uc99d\uac00<\/td>\n<td>A2-70\uc740 \uacc4\uc18d\ud574\uc11c \ube44\uc6a9 \ud6a8\uc728\uc801\uc778 \uae30\ubcf8 \uc120\ud0dd\uc785\ub2c8\ub2e4<\/td>\n<\/tr>\n<tr>\n<td>\uc7ac\uc0dd \uc5d0\ub108\uc9c0 (\ud0dc\uc591\uad11, \ud48d\ub825)<\/td>\n<td>\ud63c\ud569; \ud574\uc548 \ud48d\ub825\uc774 A4 \ucabd\uc73c\ub85c \ubc00\uc5b4\ub0b4\ub2e4<\/td>\n<td>\uae30\ubcf8\uac12\uc73c\ub85c A2\ub97c \uc120\ud0dd\ud558\uae30 \uc804\uc5d0 \ud604\uc7a5 \uc5fc\ubd84 \ub18d\ub3c4\ub97c \ud655\uc778\ud558\uc138\uc694<\/td>\n<\/tr>\n<tr>\n<td>\uc9c0\uc18d \uac00\ub2a5\uc131 \/ \uc0dd\uc560 \uc8fc\uae30 \ube44\uc6a9 \uacc4\uc0b0<\/td>\n<td>\ucf54\ud305\ub41c \ud0c4\uc18c\ubcf4\ub2e4 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc120\ud638<\/td>\n<td>A2-70\uc774 \uc720\uc9c0\ubcf4\uc218 \uc5c6\ub294 \uc218\uba85\uc73c\ub85c \uc6b0\uc704<\/td>\n<\/tr>\n<tr>\n<td>\uacf5\uae09\ub9dd \ub2e4\ubcc0\ud654<\/td>\n<td>\ub354 \ub9ce\uc740 \uc870\ub2ec \uc635\uc158, \uac00\uaca9 \uacbd\uc7c1<\/td>\n<td>\uacf5\uae09\uc5c5\uccb4 \uc804\ubc18\uc758 ISO 3506 \uc801\ud569\uc131 \uac80\uc99d<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\uc9c0\uc18d \uac00\ub2a5\uc131 \uad00\uc810\uc774 \uc870\uc6a9\ud55c \ucd94\uc9c4\ub825\uc785\ub2c8\ub2e4. \uad6c\ub9e4\uc790\uac00 \uad6c\ub9e4 \uc2dc\uc810\uc774 \uc544\ub2cc 25\ub144 \uc790\uc0b0 \uc218\uba85 \ub3d9\uc548 \ud328\uc2a4\ub108 \ube44\uc6a9\uc744 \uace0\ub824\ud560 \ub54c, \uc2a4\ud14c\uc778\ub9ac\uc2a4\ub294 \ube44\uc2f8\uac8c \ubcf4\uc774\uc9c0 \uc54a\uac8c \ub429\ub2c8\ub2e4: \uc7ac\ub3c4\uc7a5, \uad50\uccb4, \uadf8\ub9ac\uace0 \uacb0\uad6d \uc57c\uc678\uc5d0\uc11c \uc544\uc5f0\ub3c4\uae08 \ud0c4\uc18c \ubcfc\ud2b8\uac00 \uc2e4\ud328\ud558\ub294 \ubb38\uc81c\ub97c \ud53c\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. 2026\ub144 \ucd08 \uae30\uc900\uc73c\ub85c, \uc774 \uc0dd\uc560 \uc8fc\uae30 \uc8fc\uc7a5\uc740 \ub354 \uc77c\ubc18\uc801\uc778 \uac74\uc124 \ubd84\uc57c\uc5d0\uc11c \uc5c5\uadf8\ub808\uc774\ub4dc \ub300\uc2e0 A2-70\uc744 \uae30\uc900\uc120\uc73c\ub85c \ubc00\uc5b4\ub0b4\uace0 \uc788\uc2b5\ub2c8\ub2e4. \ub354 \ub192\uc740 \uac15\ub3c4 \uc2dc\uc7a5\uc5d0\uc11c\ub294 \uc6b0\ub9ac\uc758 <a href=\"https:\/\/productionscrews.com\/ko\/high-strength-bolts\/\" target=\"_blank\">\uace0\uac15\ub3c4 \ubcfc\ud2b8 \uac00\uc774\ub4dc<\/a> \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac00 \ud569\uae08 \ub4f1\uae09\uc73c\ub85c \ub118\uc5b4\uac00\ub294 \uacf3\uc744 \ub2e4\ub8f9\ub2c8\ub2e4.<\/p>\n<h2>\uc790\uc8fc \ubb3b\ub294 \uc9c8\ubb38<\/h2>\n<p><strong>A2-70\uc774 18\/8\uacfc \uac19\uc740\uac00\uc694?<\/strong><\/p>\n<p>\ub124. A2-70\uc740 18-8 \uacc4\uc5f4 \uc2a4\ud14c\uc778\ub9ac\uc2a4, \uad6c\uccb4\uc801\uc73c\ub85c 304 \ub4f1\uae09\uc73c\ub85c \ub9cc\ub4e4\uc5b4\uc84c\uc2b5\ub2c8\ub2e4. \u201c18-8\u201d\uc740 \ud06c\ub86c \uc57d 18%\uc640 \ub2c8\ucf08 \uc57d 8%\uc758 \ud654\ud559 \uc870\uc131\uc744 \uc758\ubbf8\ud558\uba70; A2\ub294 \ub3d9\uc77c \uac15\ucca0\uc5d0 \ub300\ud55c \ud328\uc2a4\ub108 \uba85\uce6d\uc785\ub2c8\ub2e4. \u201c70\u201d\uc740 \uac15\ub3c4 \uc0ac\uc591(700 MPa)\uc744 \ucd94\uac00\ud55c \uac83\uc785\ub2c8\ub2e4. \ub530\ub77c\uc11c A2-70 \ubcfc\ud2b8\ub294 \ub0c9\uac04 \uac00\uacf5\ub41c 18-8 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \ubcfc\ud2b8\ub85c 700 MPa\uc5d0 \ub2ec\ud558\ub294 \uac15\ub3c4\ub97c \uac16\ucd94\uace0 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p><strong>A4-70\uc774 316\uacfc \uac19\uc740\uac00\uc694?<\/strong><\/p>\n<p>\ub124. A4\ub294 316 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uc640 \uc815\ud655\ud788 \uc77c\uce58\ud558\uba70, A2\uac00 304\uc640 \uc77c\uce58\ud558\ub294 \uac83\uacfc \uac19\uc2b5\ub2c8\ub2e4. \u201c70\u201d\uc740 \ub450 \uacbd\uc6b0 \ubaa8\ub450 700 MPa \uc778\uc7a5 \uac15\ub3c4\ub97c \uc758\ubbf8\ud569\ub2c8\ub2e4. \ucc28\uc774\uc810\uc740 316\uc758 \ubab0\ub9ac\ube0c\ub374 \ucca8\uac00\ub85c \uc778\ud574 A4-70\uc774 \uc5fc\ubd84\uacfc \ud574\uc591 \ubd80\uc2dd\uc5d0 \ub300\ud574 \ud6e8\uc52c \ub354 \ub6f0\uc5b4\ub09c \uc800\ud56d\ub825\uc744 \uac16\ucd94\uace0 \uc788\ub2e4\ub294 \uc810\uc785\ub2c8\ub2e4.<\/p>\n<p><strong>A2-70\uc740 \uc790\uc131\uc778\uac00\uc694?<\/strong><\/p>\n<p>\uc57d\uac04, \uac00\ub054\uc785\ub2c8\ub2e4. \uc5b4\ub2d0\ub9c1\ub41c 304\ub294 \ube44\uc790\uc131\uc801\uc774\uc9c0\ub9cc, A2-70\uc758 700 MPa \uac15\ub3c4\ub97c \uc704\ud574 \ub0c9\uac04 \uac00\uacf5\ub41c \uacfc\uc815\uc5d0\uc11c \uc77c\ubd80 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\uac00 \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8\ub85c \ubcc0\ud658\ub418\uc5b4 \uc790\uc11d\uc774 \uc7a1\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ud76c\ubbf8\ud558\uac8c \uc790\uc131\uc778 A2-70 \ubcfc\ud2b8\ub294 \uc815\uc0c1\uc774\uba70 \uac00\uc9dc \ub610\ub294 \uc798\ubabb\ub41c \uc7ac\ub8cc\uc758 \uc9d5\ud6c4\uac00 \uc544\ub2d9\ub2c8\ub2e4.<\/p>\n<p><strong>A2-70\uc740 8.8 \ub4f1\uae09 \ubcfc\ud2b8\uc640 \ube44\uad50\ud588\uc744 \ub54c \uc5bc\ub9c8\ub098 \uac15\ud55c\uac00\uc694?<\/strong><\/p>\n<p>A2-70\uc758 700 MPa \uc778\uc7a5 \uac15\ub3c4\ub294 8.8 \ub4f1\uae09 \ud0c4\uc18c\uac15(800 MPa)\uc5d0 \uac00\uae5d\uc9c0\ub9cc, A2-70\uc758 \uc99d\uba85 \uc751\ub825(450 MPa)\uc740 8.8\ubcf4\ub2e4 \ub0ae\uc2b5\ub2c8\ub2e4. \ub354 \ub192\uc740 \ud558\uc911\uc774 \ud544\uc694\ud55c \uc2a4\ud14c\uc778\ub9ac\uc2a4\uc758 \uacbd\uc6b0 A2-80 \ub610\ub294 A4-80\uc73c\ub85c \uc5c5\uadf8\ub808\uc774\ub4dc\ud558\uc138\uc694. \uac15\ub3c4\uac00 \ubd80\uc2dd\ubcf4\ub2e4 \uc6b0\uc120\uc774\ub77c\uba74, \uc6b0\ub9ac\uc758 <a href=\"https:\/\/productionscrews.com\/ko\/8-8-bolt\/\" target=\"_blank\">8.8 \ubcfc\ud2b8 \uac00\uc774\ub4dc<\/a> \ud0c4\uc18c\uac15 \uc635\uc158\uacfc \ube44\uad50\ud569\ub2c8\ub2e4.<\/p>\n<p><strong>A2-70\uc740 \uc57c\uc678\uc5d0\uc11c \uc0ac\uc6a9\ud560 \uc218 \uc788\ub098\uc694?<\/strong><\/p>\n<p>\ub124, \ud574\uc548\uc5d0\uc11c \uba40\ub9ac \ub5a8\uc5b4\uc9c4 \uc77c\ubc18 \uc57c\uc678 \uc0ac\uc6a9\uc5d0 \uc801\ud569\ud569\ub2c8\ub2e4. A2-70\uc740 \ube44, \uc2b5\ub3c4, \uc77c\ubc18\uc801\uc778 \ub0a0\uc528 \ubcc0\ud654\uc5d0 \uc798 \uacac\ub525\ub2c8\ub2e4. \ubc14\ub2f7\uac00 \uadfc\ucc98 \uba87\ubc31 \ubbf8\ud130 \uc774\ub0b4, \ubc30 \uc704, \ub610\ub294 \ub3c4\ub85c \uc5fc\uc218 \uc2a4\ud504\ub808\uc774\uac00 \ub2ff\ub294 \uacf3\uc740 \ud53c\ud558\uc138\uc694. \uadf8\uacf3\uc5d0\uc11c\ub294 \ubd80\uc2dd\uc774 \ubc1c\uc0dd\ud558\uba70, \ub300\uc2e0 A4-70\uc744 \uc9c0\uc815\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n<p><strong>\uc65c A2-70 \ubcfc\ud2b8\ub294 \ub54c\ub54c\ub85c \ub179\uc2ac\uae4c\uc694?<\/strong><\/p>\n<p>\ubcf4\ud1b5 \ud45c\uba74 \uc624\uc5fc\uc73c\ub85c \uc778\ud55c \uac83\uc774\uc9c0 \uac15\ucca0\uc758 \uc2e4\ud328\ub294 \uc544\ub2d9\ub2c8\ub2e4. \uc5f0\ub9c8 \ub610\ub294 \uc640\uc774\uc5b4 \ube0c\ub7ec\uc2dc\ub85c \uc778\ud574 \ud0c4\uc18c\uac15 \uc785\uc790\uac00 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \ud45c\uba74\uc5d0 \ubc15\ud600 \ub179\uc2ac\uac8c \ub429\ub2c8\ub2e4. \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc548\uc804 \ubc29\ubc95\uc73c\ub85c \uc138\ucc99\ud558\uac70\ub098 \ud53c\ub9c9\ucc98\ub9ac\ud558\uc138\uc694. \uc9c4\uc815\ud55c \ubd80\uc2dd\uc740 \uc5fc\ud654\ubb3c \ud568\uc720 \ud658\uacbd\uc5d0\uc11c\ub9cc \ubc1c\uc0dd\ud558\uba70, A2-70\uc740 \uc774\uc5d0 \uc801\ud569\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.<\/p>\n<p><strong>A2-70 \ubcfc\ud2b8\uc5d0 \ud2b9\ubcc4\ud55c \ub108\ud2b8\uac00 \ud544\uc694\ud55c\uac00\uc694?<\/strong><\/p>\n<p>A2-70 \ubcfc\ud2b8\ub294 \ub3d9\uc77c \ub4f1\uae09\uc758 A2 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \ub108\ud2b8\uc640 \uc640\uc154\uc640 \ud568\uaed8 \uc0ac\uc6a9\ud558\uc5ec \uacb0\ud569\ubd80\uc5d0 \uc57d\ud55c \ubd80\ubd84\uc774 \uc5c6\ub3c4\ub85d \ud558\uc2ed\uc2dc\uc624. \ub098\uc0ac\uc120\uc5d0\ub294 \ud56d\uc0c1 \ubc29\uccad\uc81c\ub97c \uc0ac\uc6a9\ud558\uc138\uc694. \uc2a4\ud14c\uc778\ub9ac\uc2a4\uc640 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac00 \uc27d\uac8c \ub07c\uc784 \ud604\uc0c1\uc744 \uc77c\uc73c\ud0a4\uba70, \uac74\uc870\ud558\uac8c \uc870\uc774\uba74 \uc601\uad6c\uc801\uc73c\ub85c \uccb4\uacb0\ubd80\uac00 \uace0\uc815\ub420 \uc218 \uc788\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4.<\/p>\n<p><strong>A2-70 \ubcfc\ud2b8\uc5d0 \uc5b4\ub5a4 \ud1a0\ud06c\ub97c \uc0ac\uc6a9\ud574\uc57c \ud558\ub098\uc694?<\/strong><\/p>\n<p>\ud0c4\uc18c\uac15\uc6a9\uc774 \uc544\ub2cc \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc804\uc6a9 \ud1a0\ud06c \ud45c\ub97c \uc0ac\uc6a9\ud558\uace0 \ud56d\uc0c1 \ubc29\uccad\uc81c\ub97c \ubc1c\ub77c\uc57c \ud569\ub2c8\ub2e4. \uc2a4\ud14c\uc778\ub9ac\uc2a4\ub294 \ub9c8\ucc30 \uacc4\uc218\uac00 \ub192\uc544 \uc27d\uac8c \uac00\uacf5\ub418\uac70\ub098 \ubd80\uc2dd\ub418\uae30 \ub54c\ubb38\uc5d0, \ub3d9\uc77c \uac15\ub3c4\uc778 \ud0c4\uc18c \uac15 \ubcfc\ud2b8\ubcf4\ub2e4 \ub0ae\uc740 \ud1a0\ud06c\uac00 \ud544\uc694\ud569\ub2c8\ub2e4. \ub300\ub7b5\uc801\uc778 \uc2dc\uc791\uc810\uc73c\ub85c, \uc724\ud65c\ub41c M8 A2-70 \ubcfc\ud2b8\ub294 15~18 Nm \ubc94\uc704\uc5d0 \uc788\uc73c\uba70, \uc815\ud655\ud55c \ud06c\uae30\ubcc4 \uc218\uce58\ub97c \uacf5\uae09\uc5c5\uccb4\uc758 \uacf5\uac1c \uc218\uce58\uc640 \ube44\uad50\ud558\uc138\uc694. \uc9c1\uacbd\uc5d0 \ub530\ub77c \uac12\uc774 \uae09\uaca9\ud788 \ub2ec\ub77c\uc9c0\uace0 \uc724\ud65c\uc81c\uc5d0 \ub530\ub77c \ub2ec\ub77c\uc9c0\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4. \uc758\uc2ec\uc2a4\ub7ec\uc6b0\uba74 \ub0ae\uc740 \ud1a0\ud06c\ub85c \uc870\uc774\uace0 \uc810\uac80\ud558\uc138\uc694. \uacfc\ub3c4\ud558\uac8c \uc870\uc778 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \ubcfc\ud2b8\ub294 \uc57d\uac04 \ub290\uc2a8\ud55c \uac83\ubcf4\ub2e4 \uac00\uacf5\ub418\uac70\ub098 \ubd80\ub7ec\uc9c8 \uac00\ub2a5\uc131\uc774 \ud6e8\uc52c \ub192\uc2b5\ub2c8\ub2e4.<\/p>\n<p><img decoding=\"async\" alt=\"\ud604\ub300 \uac74\ucd95\uc6a9 \uac15\ucca0 \ubc0f \uc720\ub9ac \uc678\uc7a5\uc744 \uace0\uc815\ud558\ub294 a2-70 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uac15 \ubcfc\ud2b8\" src=\"https:\/\/productionscrews.com\/wp-content\/uploads\/2026\/07\/a2-70-closing.jpg\" \/><\/p>\n<h2>\ud504\ub85c\uc81d\ud2b8\uc5d0 \uc801\ud569\ud55c A2-70 \ube60\ub978\uccb4\uacb0 \uc120\ud0dd\ud558\uae30<\/h2>\n<p>A2-70\uc774 \ud45c\uc900 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uccb4\uacb0\uc7ac\ub85c \uc778\uc815\ubc1b\ub294 \uc774\uc720\ub294 \ud558\ub098\uc785\ub2c8\ub2e4: \uac15\ub3c4(700 MPa)\uc640 \uc2e0\ub8b0\ud560 \uc218 \uc788\ub294 \ub0b4\uc2dd\uc131\uc744 \uade0\ud615 \uc788\uac8c \uac16\ucd94\uc5c8\uc73c\uba70, \ud574\uc591 \ub4f1\uae09 \ub300\uc548\ubcf4\ub2e4 \uac00\uaca9\uc774 \uc800\ub834\ud558\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4. \ub9c8\ud0b9(\uc624\uc2a4\ud14c\ub098\uc774\ud2b8\uacc4 304 \uc2a4\ud2f8, \ub0c9\uac04 \uac00\uacf5\ub41c \uc18d\uc131 \ub4f1\uae09 70)\uc744 \ud574\ub3c5\ud558\uba74 \uac70\uc758 \ubaa8\ub4e0 \uc815\ubcf4\ub97c \uc54c \uc218 \uc788\uc2b5\ub2c8\ub2e4. 18-8\uc785\ub2c8\ub2e4. \ud480\ub9bc \uc0c1\ud0dc\uc5d0\uc11c\ub294 \ube44\uc790\uc131\uc801\uc774\uba70, \ub0c9\uac04 \uac00\uacf5 \uc2dc \uc57d\uac04 \uc790\uc131\uc801\uc77c \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc2e4\ub0b4 \ubc0f \uc77c\ubc18 \uc57c\uc678 \ub178\ucd9c\uc5d0 \uac15\ud569\ub2c8\ub2e4.<\/p>\n<p>\ub2e4\uc74c \ub2e8\uacc4\ub294 \ub450 \uac00\uc9c0 \uc9c8\ubb38\uc73c\ub85c \ud655\uc778\ud558\ub294 \uac83\uc785\ub2c8\ub2e4. \uccab\uc9f8: \uc774 \uccb4\uacb0\uc7ac\uac00 \uc18c\uae08, \ubc14\ub2f7\ubc14\ub78c, \ub3c4\ub85c \uc5fc\uc218 \uc2a4\ud504\ub808\uc774\uc5d0 \ub178\ucd9c\ub420\uae4c\uc694? \uadf8\ub807\ub2e4\uba74 A4-70\uc73c\ub85c \uc5c5\uadf8\ub808\uc774\ub4dc\ud558\uc138\uc694. \uc544\ub2c8\uba74 A2-70\uc774 \uc801\ud569\ud558\uba70 \ube44\uc6a9\ub3c4 \uc808\uac10\ub429\ub2c8\ub2e4. \ub458\uc9f8: \ud06c\uae30\uc640 \ub108\ud2b8 \uc870\ud569\uc774 \uc62c\ubc14\ub978\uc9c0, \ubc29\uccad\uc81c\uac00 \uac00\uacf5 \ubc29\uc9c0\uc5d0 \ub3c4\uc6c0\uc774 \ub418\ub294\uc9c0 \ud655\uc778\ud558\uc138\uc694. \uc774 \ub450 \uac00\uc9c0\ub97c \ud655\uc2e4\ud788 \ud558\uace0, \uad6c\uc870\uc6a9\uc778 \uacbd\uc6b0 ISO 3506 \uc778\uc99d\uc744 \uc694\uccad\ud558\uc138\uc694. A2-70\uc740 \uadf8\uac83\uc774 \uc720\uc9c0\ud558\ub294 \uc870\ub9bd\uccb4\ubcf4\ub2e4 \ub354 \uc624\ub798 \uc9c0\uc18d\ub429\ub2c8\ub2e4.<\/p>\n<h2>\uad00\ub828 \uae30\uc0ac<\/h2>\n<div style=\"display:grid;grid-template-columns:1fr 1fr;gap:12px;\">\n<p><a href=\"https:\/\/productionscrews.com\/ko\/stainless-fasteners\/\" target=\"_blank\">\uc2a4\ud14c\uc778\ub9ac\uc2a4 \ud328\uc2a4\ub108: \uc644\ubcbd\ud55c \uad6c\ub9e4\uc790 \uac00\uc774\ub4dc (2026)<\/a><\/p>\n<p><a href=\"https:\/\/productionscrews.com\/ko\/bolt-nut-stainless-steel\/\" target=\"_blank\">\ubcfc\ud2b8 \ub108\ud2b8 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8: \ub4f1\uae09, \uc870\ud569 \ubc0f \uad6c\ub9e4 \uac00\uc774\ub4dc<\/a><\/p>\n<p><a href=\"https:\/\/productionscrews.com\/ko\/stainless-steel-nuts-and-bolts\/\" target=\"_blank\">\uc2a4\ud14c\uc778\ub9ac\uc2a4 \uac15 \ub108\ud2b8\uc640 \ubcfc\ud2b8: \ub4f1\uae09, \uc885\ub958, \uad6c\ub9e4 \uac00\uc774\ub4dc<\/a><\/p>\n<p><a href=\"https:\/\/productionscrews.com\/ko\/grades-of-bolts\/\" target=\"_blank\">\ubcfc\ud2b8 \ub4f1\uae09: SAE, \ubbf8\ud130\ubc95, \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uac15 \uac15\ub3c4 \ub4f1\uae09<\/a><\/p>\n<p><a href=\"https:\/\/productionscrews.com\/ko\/8-8-bolt\/\" target=\"_blank\">8.8 \ubcfc\ud2b8: 8.8 \ub4f1\uae09 \ubcfc\ud2b8\uc640 \uac15\ub3c4\uc5d0 \ub300\ud55c \uc644\uc804 \uac00\uc774\ub4dc<\/a><\/p>\n<p><a href=\"https:\/\/productionscrews.com\/ko\/hexagon-socket-screws\/\" target=\"_blank\">\uc721\uac01 \uc18c\ucf13 \ub098\uc0ac: \uc81c\ud488 \ubc94\uc704<\/a><\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>A2-70 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uac15\uc774 \uc2e4\uc81c\ub85c \ubb34\uc5c7\uc778\uc9c0: ISO 3506 \ub9c8\ud0b9 \ud574\ub3c5, \uc804\uccb4 \uae30\uacc4\uc801 \uc0ac\uc591 \ud655\uc778, 304 \/ 18-8 \/ 316 \uc815\ub9ac, A2-70\uc774 \uc5b4\ub514\uc5d0 \uc801\ud569\ud558\uace0 \uc5b4\ub514\uc11c \uc2e4\ud328\ud558\ub294\uc9c0 \ud30c\uc545<\/p>","protected":false},"author":1,"featured_media":4976,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4980","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-screws-flange-tutorial"],"_links":{"self":[{"href":"https:\/\/productionscrews.com\/ko\/wp-json\/wp\/v2\/posts\/4980","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/productionscrews.com\/ko\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/productionscrews.com\/ko\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/productionscrews.com\/ko\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/productionscrews.com\/ko\/wp-json\/wp\/v2\/comments?post=4980"}],"version-history":[{"count":1,"href":"https:\/\/productionscrews.com\/ko\/wp-json\/wp\/v2\/posts\/4980\/revisions"}],"predecessor-version":[{"id":4981,"href":"https:\/\/productionscrews.com\/ko\/wp-json\/wp\/v2\/posts\/4980\/revisions\/4981"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/productionscrews.com\/ko\/wp-json\/wp\/v2\/media\/4976"}],"wp:attachment":[{"href":"https:\/\/productionscrews.com\/ko\/wp-json\/wp\/v2\/media?parent=4980"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/productionscrews.com\/ko\/wp-json\/wp\/v2\/categories?post=4980"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/productionscrews.com\/ko\/wp-json\/wp\/v2\/tags?post=4980"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}