{"id":4008,"date":"2024-06-29T15:49:00","date_gmt":"2024-06-29T15:49:00","guid":{"rendered":"https:\/\/machining-quote.com\/?p=4008"},"modified":"2024-07-09T09:34:35","modified_gmt":"2024-07-09T09:34:35","slug":"440-stainless-steel-vs-304","status":"publish","type":"post","link":"https:\/\/machining-quote.com\/ko\/bolg\/440-stainless-steel-vs-304\/","title":{"rendered":"440 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15 \ub300 304: \uc54c\uc544\uc57c \ud560 \ubaa8\ub4e0 \uac83"},"content":{"rendered":"<h4>\ubaa9\ucc28<\/h4>\n<ul>\n<li><a href=\"#ss420-and-ss304-which-is-better\">SS420\uacfc SS304: \uc5b4\ub290 \uac83\uc774 \ub354 \uc88b\ub098\uc694?<\/a><\/li>\n<li><a href=\"#disadvantages-and-advantages-of-using-304-vs-440-stainless-steel\">304 \ub300 440 \uc2a4\ud14c\uc778\ub808\uc2a4 \uc2a4\ud2f8 \uc0ac\uc6a9\uc758 \ub2e8\uc810 \ubc0f \uc7a5\uc810<\/a><\/li>\n<li><a href=\"#applications-where-to-use-440-vs-304-stainless-steel\">\uc751\uc6a9 \ubd84\uc57c: 440 \ubc0f 304 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc744 \uc0ac\uc6a9\ud558\ub294 \uacf3<\/a><\/li>\n<li><a href=\"#corrosion-resistance-440-stainless-steel-vs-304\">\ubd80\uc2dd \uc800\ud56d\uc131: 440 \uc2a4\ud14c\uc778\ub808\uc2a4 \uc2a4\ud2f8 \ub300 304<\/a><\/li>\n<li><a href=\"#composition-differences-between-440-and-304-stainless-steel\">440\uacfc 304 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc758 \uad6c\uc131 \ucc28\uc774<\/a><\/li>\n<li><a href=\"#mechanical-properties-comparing-440-and-304-stainless-steel\">\uae30\uacc4\uc801 \uc131\uc9c8: 440 \ubc0f 304 \uc2a4\ud14c\uc778\ub808\uc2a4\uac15 \ube44\uad50<\/a><\/li>\n<li><a href=\"#machinability-and-formability-440-vs-304-stainless-steel\">\uac00\uacf5\uc131 \ubc0f \uc131\ud615\uc131: 440 \ubc0f 304 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15<\/a><\/li>\n<li><a href=\"#heat-treatment-processes-for-440-and-304-stainless-steel\">440 \ubc0f 304 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc758 \uc5f4\ucc98\ub9ac \uacf5\uc815<\/a><\/li>\n<li><a href=\"#summary-chart-of-what-is-the-difference-between-304-and-420-stainless-steel\">304\uc640 440 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc758 \ucc28\uc774\uc810 \uc694\uc57d \ucc28\ud2b8<\/a><\/li>\n<li><a href=\"#conclusion\">\uacb0\ub860<\/a><\/li>\n<\/ul>\n<p>\u201c440 \ub300 304 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15: \ub0b4\uad6c\uc131, \uc131\ub2a5 \ubc0f \uc751\uc6a9 \ubd84\uc57c \uacf5\uac1c\u201d<\/p>\n<p>440 \uc2a4\ud14c\uc778\ub808\uc2a4 \uc2a4\ud2f8\uacfc 304 \uc2a4\ud14c\uc778\ub808\uc2a4 \uc2a4\ud2f8\uc740 \uc8fc\ubc29 \ub3c4\uad6c\ubd80\ud130 \uc0b0\uc5c5 \uae30\uacc4\uc5d0 \uc774\ub974\uae30\uae4c\uc9c0 \uad11\ubc94\uc704\ud55c \uc81c\ud488 \uc81c\uc870\uc5d0 \uac00\uc7a5 \uc77c\ubc18\uc801\uc73c\ub85c \uc0ac\uc6a9\ub418\ub294 \ub450 \uac00\uc9c0 \uc7ac\ub8cc\uc785\ub2c8\ub2e4. \uac01 \uc720\ud615\uc758 \uc2a4\ud14c\uc778\ub808\uc2a4\uac15\uc740 \uace0\uc720\ud55c \ud2b9\uc131\uacfc \uc774\uc810\uc744 \uc81c\uacf5\ud558\ubbc0\ub85c \ud658\uacbd \uc870\uac74, \uae30\uacc4\uc801 \uc694\uad6c \uc0ac\ud56d \ubc0f \ube44\uc6a9 \uace0\ub824 \uc0ac\ud56d\uc5d0 \ub530\ub77c \ub2e4\uc591\ud55c \uc751\uc6a9 \ubd84\uc57c\uc5d0 \uc801\ud569\ud569\ub2c8\ub2e4. \ud2b9\uc815 \uc6a9\ub3c4\uc5d0 \uc801\ud569\ud55c \uc7ac\ub8cc\ub97c \uc120\ud0dd\ud558\uace0 \ub0b4\uad6c\uc131, \uae30\ub2a5\uc131 \ubc0f \ube44\uc6a9 \ud6a8\uc728\uc131\uc744 \ubcf4\uc7a5\ud558\ub824\uba74 440 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uacfc 304 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc758 \ucc28\uc774\uc810\uc744 \uc774\ud574\ud558\ub294 \uac83\uc774 \uc911\uc694\ud569\ub2c8\ub2e4. \uc774 \uae30\uc0ac\uc5d0\uc11c\ub294 440\uacfc 304 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc758 \uc8fc\uc694 \ud2b9\uc131, \uc751\uc6a9 \ubc0f \ucc28\uc774\uc810\uc744 \uc0b4\ud3b4\ubcf4\uace0 \ub450 \uc7ac\ub8cc\uc5d0 \ub300\ud55c \ud3ec\uad04\uc801\uc778 \uc774\ud574\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/p>\n<h2 id=\"ss420-and-ss304-which-is-better\">SS420\uacfc SS304: \uc5b4\ub290 \uac83\uc774 \ub354 \uc88b\ub098\uc694?<\/h2>\n<h3>440 \uc2a4\ud14c\uc778\ub808\uc2a4 \uc2a4\ud2f8 \ud2b9\uc131<\/h3>\n<p>440C\ub77c\uace0\ub3c4 \ubd88\ub9ac\ub294 440 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc740 \uace0\uac15\ub3c4, \uc801\ub2f9\ud55c \ub0b4\uc2dd\uc131, \uc6b0\uc218\ud55c \uacbd\ub3c4 \ubc0f \ub0b4\ub9c8\ubaa8\uc131\uc73c\ub85c \uc54c\ub824\uc9c4 \uace0\ud0c4\uc18c \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8\uacc4 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc785\ub2c8\ub2e4. 440 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uac15\uc758 \ud0c4\uc18c \ud568\ub7c9\uc774 \ub192\uc744\uc218\ub85d \uc5f4\ucc98\ub9ac\ub97c \ud1b5\ud574 \uacbd\ub3c4\uc640 \uac15\ub3c4\uac00 \ud06c\uac8c \uc99d\uac00\ud569\ub2c8\ub2e4. \ub530\ub77c\uc11c \uce7c, \uc808\ub2e8 \ub3c4\uad6c, \uc218\uc220 \ub3c4\uad6c \ub4f1 \ub0a0\uce74\ub86d\uace0 \ub0b4\uad6c\uc131\uc774 \ub6f0\uc5b4\ub09c \ubaa8\uc11c\ub9ac\uac00 \ud544\uc694\ud55c \uc751\uc6a9 \ubd84\uc57c\uc5d0 \ud2b9\ud788 \uc801\ud569\ud569\ub2c8\ub2e4. \uadf8\ub7ec\ub098 \uc774\ub7ec\ud55c \uc99d\uac00\ub41c \uacbd\ub3c4\ub294 \ub0ae\uc740 \ud0c4\uc18c \ub4f1\uae09\uc5d0 \ube44\ud574 \ub0b4\uc2dd\uc131\uc774 \uac10\uc18c\ud558\uc5ec \ubd80\uc2dd\uc131\uc774 \ub192\uc740 \ud658\uacbd\uc5d0\uc11c \uc0ac\uc6a9\ud558\uae30\uc5d0 \uc801\ud569\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.<\/p>\n<h3>304 \uc2a4\ud14c\uc778\ub808\uc2a4 \uc2a4\ud2f8 \ud2b9\uc131<\/h3>\n<p>\uc774\uc5d0 \ubc18\ud574, \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\uacc4\uc5d0 \uc18d\ud558\ub294 304 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc740 \ub0b4\uc2dd\uc131\uc774 \uc6b0\uc218\ud558\uace0 \uc131\ud615\uc131\uc774 \ub6f0\uc5b4\ub09c \uac83\uc73c\ub85c \uc54c\ub824\uc838 \uc788\uc2b5\ub2c8\ub2e4. 18% \ud06c\ub86c\uacfc 8% \ub2c8\ucf08\ub85c \uad6c\uc131\ub41c 304 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc740 \uc5f4\ucc98\ub9ac \uc5c6\uc774\ub3c4 \uac15\ub3c4\uc640 \ub0b4\uc2dd\uc131\uc758 \uade0\ud615 \uc7a1\ud78c \uc870\ud569\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4. \uc774 \ub4f1\uae09\uc740 \ub9e4\uc6b0 \ub2e4\ubaa9\uc801\uc774\uba70 \uc8fc\ubc29 \uc7a5\ube44, \uc790\ub3d9\ucc28 \ubd80\ud488 \ubc0f \uac74\ucd95 \uc694\uc18c\uc5d0 \uc77c\ubc18\uc801\uc73c\ub85c \uc0ac\uc6a9\ub429\ub2c8\ub2e4. \ud0c4\uc18c \ud568\ub7c9\uc774 \ub0ae\uae30 \ub54c\ubb38\uc5d0 304 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc740 440\uac15\ubcf4\ub2e4 \uc5f0\uc131\uc774 \ub192\uc544 \uad6c\uc870\uc801 \ubb34\uacb0\uc131\uc744 \uc190\uc0c1\uc2dc\ud0a4\uc9c0 \uc54a\uc73c\uba74\uc11c \ub2e4\uc591\ud55c \ubaa8\uc591\uacfc \ud06c\uae30\ub85c \uc131\ud615\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<h3>\uc62c\ubc14\ub978 \uac15\ucca0 \uc120\ud0dd<\/h3>\n<p>440\uacfc 304 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15 \uc0ac\uc774\uc758 \uc120\ud0dd\uc740 \uad81\uadf9\uc801\uc73c\ub85c \uc801\uc6a9 \ubd84\uc57c\uc758 \ud2b9\uc815 \uc694\uad6c \uc0ac\ud56d\uc5d0 \ub530\ub77c \ub2ec\ub77c\uc9d1\ub2c8\ub2e4. \uac15\ub3c4\uc640 \uacbd\ub3c4\uac00 \uac00\uc7a5 \uc911\uc694\ud558\uace0 \ubd80\uc2dd\uc774 \ub35c \uc6b0\ub824\ub418\ub294 \ud658\uacbd\uc5d0\uc11c\ub294 \uc758\uc2ec\ud560 \uc5ec\uc9c0 \uc5c6\uc774 440 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc774 \ud0c1\uc6d4\ud55c \uc120\ud0dd\uc785\ub2c8\ub2e4. \uc5f4\uc545\ud55c \uc870\uac74\uc5d0\uc11c\ub3c4 \ub0a0\uce74\ub85c\uc6b4 \ubaa8\uc11c\ub9ac\ub97c \uc720\uc9c0\ud558\ub294 \ub2a5\ub825\uc740 \uace0\ud488\uc9c8 \ube14\ub808\uc774\ub4dc \ubc0f \ub3c4\uad6c \uc81c\uc870\uc5d0 \uc5c6\uc5b4\uc11c\ub294 \uc548 \ub420 \uc694\uc18c\uc785\ub2c8\ub2e4.<\/p>\n<p>\ubc18\ub300\ub85c, \ub354 \ub192\uc740 \ub0b4\uc2dd\uc131\uacfc \uc131\ud615\uc131\uc744 \uc694\uad6c\ud558\ub294 \uc6a9\ub3c4\uc5d0\ub294 304 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc774 \ubc14\ub78c\uc9c1\ud569\ub2c8\ub2e4. \uad11\ubc94\uc704\ud55c \ud654\ud559\ubb3c\uc9c8 \ubc0f \ub300\uae30 \uc870\uac74\uc5d0 \ub300\ud55c \uc800\ud56d\uc131\uacfc \uc81c\uc870 \uc6a9\uc774\uc131\uc73c\ub85c \uc778\ud574 \uac00\uc804\uc81c\ud488\ubd80\ud130 \uc0b0\uc5c5 \uc7a5\ube44\uc5d0 \uc774\ub974\uae30\uae4c\uc9c0 \uad11\ubc94\uc704\ud55c \uc751\uc6a9 \ubd84\uc57c\uc5d0 \uc801\ud569\ud569\ub2c8\ub2e4. \ub610\ud55c 304 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc740 \ubc1d\uace0 \uc720\uc9c0 \uad00\ub9ac\uac00 \uc26c\uc6b4 \ud45c\uba74\uc73c\ub85c \uc778\ud574 \ubbf8\uc801 \ub9e4\ub825\uc774 \uc788\uc5b4 \uc7a5\uc2dd \ubc0f \uac74\ucd95 \uc6a9\ub3c4\ub85c \ub110\ub9ac \uc0ac\uc6a9\ub429\ub2c8\ub2e4.<\/p>\n<h2 id=\"disadvantages-and-advantages-of-using-304-vs-440-stainless-steel\">304 \ub300 440 \uc2a4\ud14c\uc778\ub808\uc2a4 \uc2a4\ud2f8 \uc0ac\uc6a9\uc758 \ub2e8\uc810 \ubc0f \uc7a5\uc810<\/h2>\n<h3>304 \uc2a4\ud14c\uc778\ub808\uc2a4 \uc2a4\ud2f8\uc758 \uc7a5\uc810<\/h3>\n<ul>\n<li>\ub6f0\uc5b4\ub09c \ub0b4\uc2dd\uc131<\/li>\n<li>\ub180\ub77c\uc6b4 \ub2e4\uc591\uc131\uacfc \uc131\ud615\uc131<\/li>\n<li>\ube44\uc790\uc131 \ud2b9\uc131<\/li>\n<li>\uc81c\uc791 \ubc0f \uc6a9\uc811 \uc6a9\uc774\uc131<\/li>\n<\/ul>\n<h3>304 \uc2a4\ud14c\uc778\ub808\uc2a4 \uc2a4\ud2f8\uc758 \ub2e8\uc810<\/h3>\n<ul>\n<li>\uace0\uc628 \ud658\uacbd(800\u00b0F \uc774\uc0c1)\uc5d0\ub294 \uc801\ud569\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.<\/li>\n<li>440 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc5d0 \ube44\ud574 \uacbd\ub3c4\uc640 \ub0b4\ub9c8\ubaa8\uc131\uc774 \ub0ae\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n<h3>440 \uc2a4\ud14c\uc778\ub808\uc2a4 \uc2a4\ud2f8\uc758 \uc7a5\uc810<\/h3>\n<ul>\n<li>\uc6b0\uc218\ud55c \uacbd\ub3c4\uc640 \ub0b4\ub9c8\ubaa8\uc131<\/li>\n<li>\ub192\uc740 \uc2a4\ud2b8\ub808\uc2a4 \uc751\uc6a9 \ubd84\uc57c\uc5d0 \ud0c1\uc6d4<\/li>\n<li>\uac15\ub3c4 \uc99d\uac00\ub97c \uc704\ud574 \uc5f4\ucc98\ub9ac \uac00\ub2a5<\/li>\n<\/ul>\n<h3>440 \uc2a4\ud14c\uc778\ub808\uc2a4 \uc2a4\ud2f8\uc758 \ub2e8\uc810<\/h3>\n<ul>\n<li>304 \uc2a4\ud14c\uc778\ub808\uc2a4 \uc2a4\ud2f8\uc5d0 \ube44\ud574 \ub0b4\uc2dd\uc131\uc774 \ub0ae\uc2b5\ub2c8\ub2e4.<\/li>\n<li>\uae30\uacc4 \uac00\uacf5 \ubc0f \uc81c\uc791\uc774 \ub354\uc6b1 \uae4c\ub2e4\ub85c\uc6cc\uc84c\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n<h2 id=\"applications-where-to-use-440-vs-304-stainless-steel\">\uc751\uc6a9 \ubd84\uc57c: 440 \ubc0f 304 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc744 \uc0ac\uc6a9\ud558\ub294 \uacf3<\/h2>\n<h3>304 \uc2a4\ud14c\uc778\ub808\uc2a4 \uc2a4\ud2f8\uc758 \uc751\uc6a9<\/h3>\n<ul>\n<li>\uc8fc\ubc29\uc6a9\ud488 \ubc0f \uc870\ub9ac\uae30\uad6c<\/li>\n<li>\uac74\ucd95 \ud328\ub110\ub9c1 \ubc0f \ud2b8\ub9bc<\/li>\n<li>\uc790\ub3d9\ucc28 \ubc0f \ud56d\uacf5\uc6b0\uc8fc \ubd80\ud488<\/li>\n<li>\uc758\ub8cc \uae30\uae30 \ubc0f \uc2dd\ud488 \uac00\uacf5 \uc7a5\ube44<\/li>\n<\/ul>\n<h3>440 \uc2a4\ud14c\uc778\ub808\uc2a4 \uc2a4\ud2f8\uc758 \uc751\uc6a9<\/h3>\n<ul>\n<li>\uc808\ub2e8 \ub3c4\uad6c \ubc0f \uce7c<\/li>\n<li>\uc218\uc220 \ub3c4\uad6c<\/li>\n<li>\ubca0\uc5b4\ub9c1 \ubc0f \uae30\ud0c0 \uace0\uc751\ub825 \ubd80\ud488<\/li>\n<\/ul>\n<h2 id=\"corrosion-resistance-440-stainless-steel-vs-304\">\ubd80\uc2dd \uc800\ud56d\uc131: 440 \uc2a4\ud14c\uc778\ub808\uc2a4 \uc2a4\ud2f8 \ub300 304<\/h2>\n<h3>304 \uc2a4\ud14c\uc778\ub808\uc2a4 \uc2a4\ud2f8 \ub0b4\uc2dd\uc131<\/h3>\n<p>304 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc740 \uc57d 18% \ud06c\ub86c\uacfc 8% \ub2c8\ucf08\ub85c \uad6c\uc131\ub418\uc5b4 \uc788\uc5b4 18\/8 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc73c\ub85c\ub3c4 \uc54c\ub824\uc838 \uc788\uc73c\uba70 \uc6b0\uc218\ud55c \ub0b4\uc2dd\uc131\uc73c\ub85c \uc720\uba85\ud569\ub2c8\ub2e4. \uc774 \ud569\uae08\uc740 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\uacc4 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc785\ub2c8\ub2e4. \uc989, \ub2e4\ub978 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15 \uc720\ud615\uc5d0 \ube44\ud574 \ud06c\ub86c\uacfc \ub2c8\ucf08 \ud568\ub7c9\uc774 \ub192\uc2b5\ub2c8\ub2e4. \uc774\ub7ec\ud55c \uc6d0\uc18c\uac00 \uc874\uc7ac\ud558\uba74 \uac15\ucca0 \ud45c\uba74\uc5d0 \ubd80\uc2dd \ubc29\uc9c0\ub9c9 \uc5ed\ud560\uc744 \ud558\ub294 \uc218\ub3d9 \uc0b0\ud654\ud06c\ub86c \uce35\uc774 \ud615\uc131\ub429\ub2c8\ub2e4. \uc774 \ubcf4\ud638\uce35\uc740 \uad11\ubc94\uc704\ud55c \ud658\uacbd, \ud2b9\ud788 \ubd80\uc2dd\uc131\uc774 \ub35c\ud55c \ud658\uacbd\uc5d0\uc11c \ub9e4\uc6b0 \ud6a8\uacfc\uc801\uc785\ub2c8\ub2e4.<\/p>\n<h3>440 \uc2a4\ud14c\uc778\ub808\uc2a4 \uc2a4\ud2f8 \ub0b4\uc2dd\uc131<\/h3>\n<p>\ubc18\uba74, 440 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc740 \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8 \uc720\ud615\uc73c\ub85c 304\uc5d0 \ube44\ud574 \ud0c4\uc18c \uc218\uc900\uc774 \ub354 \ub192\uc2b5\ub2c8\ub2e4. 440 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15(440A, 440B \ubc0f 440C)\uc758 \uc77c\ubc18\uc801\uc778 \ub4f1\uae09\uc740 \uc8fc\ub85c \ud0c4\uc18c \ud568\ub7c9\uc774 \ub2e4\ub985\ub2c8\ub2e4. 440C\ub294 \ud0c4\uc18c \ud568\ub7c9\uc774 \uac00\uc7a5 \ub192\uc73c\uba70 \uadf8 \uacb0\uacfc \uc138 \uac00\uc9c0 \uc911 \uac00\uc7a5 \ub192\uc740 \uacbd\ub3c4\uc640 \ub0b4\ub9c8\ubaa8\uc131\uc744 \ub2ec\uc131\ud569\ub2c8\ub2e4. \uadf8\ub7ec\ub098 440 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15 \ub4f1\uae09\uc758 \ud0c4\uc18c \ud568\ub7c9\uc774 \ub192\ub2e4\ub294 \uac83\uc740 \uc77c\ubc18\uc801\uc73c\ub85c \uc774\ub7ec\ud55c \ud569\uae08\uc774 304 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\ubcf4\ub2e4 \ubd80\uc2dd\uc5d0 \ub354 \ucde8\uc57d\ud558\ub2e4\ub294 \uac83\uc744 \uc758\ubbf8\ud569\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ubbfc\uac10\uc131\uc740 \ud0c4\uc18c \ub2e8\uc704\ub2f9 \ud06c\ub86c \ud568\ub7c9\uc774 \ub0ae\uace0 \ub2c8\ucf08\uc774 \uc5c6\uae30 \ub54c\ubb38\uc5d0 \uc218\ub3d9 \ud06c\ub86c \uc0b0\ud654\ubb3c \uce35\uc744 \ud615\uc131\ud558\ub294 \ub2a5\ub825\uc774 \uac10\uc18c\ud558\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4.<\/p>\n<h2 id=\"composition-differences-between-440-and-304-stainless-steel\">440\uacfc 304 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc758 \uad6c\uc131 \ucc28\uc774<\/h2>\n<h3>304 \uc2a4\ud14c\uc778\ub808\uc2a4 \uc2a4\ud2f8 \uad6c\uc131<\/h3>\n<ul>\n<li>\ud06c\ub86c: 18%<\/li>\n<li>\ub2c8\ucf08: 8%<\/li>\n<li>\ud0c4\uc18c: &lt; 0.08%<\/li>\n<\/ul>\n<h3>440 \uc2a4\ud14c\uc778\ub808\uc2a4 \uc2a4\ud2f8 \uad6c\uc131<\/h3>\n<ul>\n<li>\ud06c\ub86c: 16-18%<\/li>\n<li>\ud0c4\uc18c: 0.6-1.2%<\/li>\n<li>\ub2c8\ucf08: 0%<\/li>\n<\/ul>\n<h2 id=\"mechanical-properties-comparing-440-and-304-stainless-steel\">\uae30\uacc4\uc801 \uc131\uc9c8: 440 \ubc0f 304 \uc2a4\ud14c\uc778\ub808\uc2a4\uac15 \ube44\uad50<\/h2>\n<table border=\"1\">\n<tbody>\n<tr>\n<th>\uc18d\uc131<\/th>\n<th>440 \uc2a4\ud14c\uc778\ub808\uc2a4 \uc2a4\ud2f8<\/th>\n<th>304 \uc2a4\ud14c\uc778\ub808\uc2a4 \uc2a4\ud2f8<\/th>\n<\/tr>\n<tr>\n<td>\uacbd\ub3c4<\/td>\n<td>\ub354 \ub192\uc74c<\/td>\n<td>Lower<\/td>\n<\/tr>\n<tr>\n<td>\uc778\uc7a5 \uac15\ub3c4<\/td>\n<td>\ub354 \ub192\uc74c<\/td>\n<td>Lower<\/td>\n<\/tr>\n<tr>\n<td>\ub0b4\uc2dd\uc131<\/td>\n<td>Lower<\/td>\n<td>\ub354 \ub192\uc74c<\/td>\n<\/tr>\n<tr>\n<td>\uc131\ud615\uc131<\/td>\n<td>Lower<\/td>\n<td>\ub354 \ub192\uc74c<\/td>\n<\/tr>\n<tr>\n<td>\uae30\uacc4 \uac00\uacf5\uc131<\/td>\n<td>\ub354 \ub3c4\uc804\uc801\uc778<\/td>\n<td>\ub354 \uc27d\uac8c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 id=\"machinability-and-formability-440-vs-304-stainless-steel\">\uac00\uacf5\uc131 \ubc0f \uc131\ud615\uc131: 440 \ubc0f 304 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15<\/h2>\n<h3>\uae30\uacc4 \uac00\uacf5\uc131<\/h3>\n<p>440 \uc2dc\ub9ac\uc988 \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8\uacc4 \uace0\ud0c4\uc18c \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc5d0 \uc18d\ud558\ub294 440 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc5d0\ub294 \uc77c\ubc18\uc801\uc73c\ub85c 440A, 440B \ubc0f 440C\uc640 \uac19\uc740 \ub4f1\uae09\uc774 \ud3ec\ud568\ub418\uba70 440C\uac00 \uac00\uc7a5 \ub2e8\ub2e8\ud569\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ub192\uc740 \ud0c4\uc18c \ud568\ub7c9\uc740 \uac15\ucca0\uc5d0 \ub354 \ud070 \uac15\ub3c4\uc640 \ub0b4\ub9c8\ubaa8\uc131\uc744 \ubd80\uc5ec\ud558\uc5ec \uc808\uc0ad \uacf5\uad6c \ubc0f \ub0b4\uad6c\uc131 \ubd80\ud488\uc744 \uc0dd\uc0b0\ud558\ub294 \ub370 \uc720\ub9ac\ud569\ub2c8\ub2e4. \uadf8\ub7ec\ub098 \uc774\ub7ec\ud55c \ub3d9\uc77c\ud55c \ud2b9\uc131\uc73c\ub85c \uc778\ud574 440 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc740 \uc77c\ubc18\uc801\uc73c\ub85c 304 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\ubcf4\ub2e4 \uac00\uacf5\ud558\uae30\uac00 \ub354 \uae4c\ub2e4\ub86d\uc2b5\ub2c8\ub2e4. 440 \uac15\ucca0\uc758 \uacbd\ub3c4\uac00 \ub192\uc744\uc218\ub85d \uc808\uc0ad \uacf5\uad6c\uac00 \ub354 \ube68\ub9ac \ub9c8\ubaa8\ub418\ub294 \uacbd\ud5a5\uc774 \uc788\uc73c\uba70 \ud6a8\uacfc\uc801\uc73c\ub85c \ud615\uc0c1\ud654\ud558\ub824\uba74 \ub354 \uacac\uace0\ud55c \uac00\uacf5 \uc7a5\ube44 \ub610\ub294 \ud2b9\uc815 \uac00\uacf5 \uae30\uc220\uc774 \ud544\uc694\ud569\ub2c8\ub2e4.<\/p>\n<h3>\uc131\ud615\uc131<\/h3>\n<p>\ubc18\uba74, 304 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc740 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8 \uacc4\uc5f4\ub85c \ud0c4\uc18c \ud568\ub7c9\uc774 \ub0ae\uace0 \ud06c\ub86c, \ub2c8\ucf08 \ud568\ub7c9\uc774 \ub192\uc544 \uc131\ud615\uc131\uacfc \uc6a9\uc811\uc131\uc774 \ub6f0\uc5b4\ub09c \uac83\uc73c\ub85c \uc54c\ub824\uc838 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub7ec\ud55c \uad6c\uc131\uc73c\ub85c \uc778\ud574 304 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc740 \ubd80\uc2dd\uc774 \ub35c \ubc1c\uc0dd\ud560 \ubfd0\ub9cc \uc544\ub2c8\ub77c \uac00\uacf5 \uc791\uc5c5 \uc911\uc5d0 \uc791\uc5c5\ud558\uae30\ub3c4 \ud6e8\uc52c \uc26c\uc6cc\uc9d1\ub2c8\ub2e4. 440 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\ubcf4\ub2e4 \ubd80\ub4dc\ub7ec\uc6cc \uc808\uc0ad \uacf5\uad6c\uac00 \ube68\ub9ac \ub9c8\ubaa8\ub418\uc9c0 \uc54a\uc544 \ubcf4\ub2e4 \uac04\ub2e8\ud558\uace0 \ube44\uc6a9 \ud6a8\uc728\uc801\uc778 \uac00\uacf5\uc774 \uac00\ub2a5\ud569\ub2c8\ub2e4. \uc774\ub294 \uad11\ubc94\uc704\ud55c \uc131\ud615 \ubc0f \uc6a9\uc811\uc774 \ud544\uc694\ud55c \uc751\uc6a9 \ubd84\uc57c\uc5d0\uc11c \ud2b9\ud788 \uc720\uc6a9\ud558\ubbc0\ub85c 304 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc740 \uccad\uacb0\uc131\uacfc \uc81c\uc870 \uc6a9\uc774\uc131\uc774 \uc6b0\uc120\uc2dc\ub418\ub294 \uc2dd\ud488 \uac00\uacf5 \ubc0f \uc758\uc57d\ud488\uacfc \uac19\uc740 \uc0b0\uc5c5\uc5d0\uc11c \uc120\ud638\ub418\ub294 \uc120\ud0dd\uc785\ub2c8\ub2e4.<\/p>\n<h2 id=\"heat-treatment-processes-for-440-and-304-stainless-steel\">440 \ubc0f 304 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc758 \uc5f4\ucc98\ub9ac \uacf5\uc815<\/h2>\n<h3>440 \uc2a4\ud14c\uc778\ub808\uc2a4 \uc2a4\ud2f8 \uc5f4\ucc98\ub9ac<\/h3>\n<p>\ud0c4\uc18c \ud568\ub7c9\uc774 \ub192\uc740 \uac83\uc73c\ub85c \uc54c\ub824\uc9c4 440 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc740 \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8 \ud569\uae08\uc73c\ub85c \ubd84\ub958\ub418\uba70 \uac15\ub3c4\uc640 \uacbd\ub3c4\ub85c \uc720\uba85\ud569\ub2c8\ub2e4. 440 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uac15\uc758 \uc5f4\ucc98\ub9ac \uacf5\uc815\uc5d0\ub294 \uc77c\ubc18\uc801\uc73c\ub85c \uac15\uc744 925~1065\u00b0C\uc758 \uc628\ub3c4 \ubc94\uc704\ub85c \uac00\uc5f4\ud55c \ud6c4 \uacf5\uae30\ub098 \uc624\uc77c\uc744 \uc0ac\uc6a9\ud558\uc5ec \uae09\uc18d \ub0c9\uac01\ud558\ub294 \ub2f4\uae08\uc9c8\uc774 \ud3ec\ud568\ub429\ub2c8\ub2e4. \uc774 \ub2f4\uae08\uc9c8 \uacf5\uc815\uc740 \uac15\ucca0\uc744 \ub9e4\uc6b0 \ub2e8\ub2e8\ud55c \uacb0\uc815 \uad6c\uc870\uc778 \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8\ub85c \ubcc0\ud615\uc2dc\ud0a4\uae30 \ub54c\ubb38\uc5d0 \ub9e4\uc6b0 \uc911\uc694\ud569\ub2c8\ub2e4. \ub2f4\uae08\uc9c8 \ud6c4 440 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc740 \uc6d0\ud558\ub294 \uacbd\ub3c4 \uc218\uc900\uc5d0 \ub530\ub77c \uac15\ucca0\uc744 \ub354 \ub0ae\uc740 \uc628\ub3c4(\ubcf4\ud1b5 150~370\u00b0C)\ub85c \uc7ac\uac00\uc5f4\ud558\ub294 \uacf5\uc815\uc778 \ud15c\ud37c\ub9c1\uc744 \uac70\uce69\ub2c8\ub2e4. \ud15c\ud37c\ub9c1\uc740 \ubd80\uc11c\uc9c0\uae30 \uc26c\uc6b4 \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8 \uc870\uc9c1\uc5d0 \uc5b4\ub290 \uc815\ub3c4 \uc778\uc131\uc744 \ubd80\uc5ec\ud558\ubbc0\ub85c \ud544\uc218\uc801\uc785\ub2c8\ub2e4.<\/p>\n<h3>304 \uc2a4\ud14c\uc778\ub808\uc2a4 \uc2a4\ud2f8 \uc5f4\ucc98\ub9ac<\/h3>\n<p>\uc774\uc5d0 \ube44\ud574 304 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc740 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8 \uacc4\uc5f4\ub85c \ub0b4\uc2dd\uc131\uacfc \uc5f0\uc131\uc774 \ub6f0\uc5b4\ub09c \uac83\uc73c\ub85c \uc54c\ub824\uc838 \uc788\uc2b5\ub2c8\ub2e4. 304 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uac15\uc758 \uc5f4\ucc98\ub9ac\ub294 \ud0c4\uc18c \ud568\ub7c9\uc774 \ub0ae\uace0 \ud06c\ub86c \ubc0f \ub2c8\ucf08 \ud568\ub7c9\uc774 \ub192\uae30 \ub54c\ubb38\uc5d0 440 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uac15\uc758 \uc5f4\ucc98\ub9ac\uc640 \ud06c\uac8c \ub2e4\ub985\ub2c8\ub2e4. 440\uacfc \ub2ec\ub9ac 304\ub294 \uc5f4\ucc98\ub9ac\ub85c \uacbd\ud654\ud560 \uc218 \uc5c6\uc73c\uba70 \ub300\uc2e0 \uc5b4\ub2d0\ub9c1\uc744 \ubc1b\uc2b5\ub2c8\ub2e4. \uc5b4\ub2d0\ub9c1\uc5d0\ub294 \uac15\ucca0\uc744 \uc57d 1040\u00b0C\uc758 \uc628\ub3c4\ub85c \uac00\uc5f4\ud558\ub294 \uc791\uc5c5\uc774 \ud3ec\ud568\ub418\uba70, \uc774\ub97c \ud1b5\ud574 \uac15\ucca0\uc758 \ub0b4\ubd80 \uad6c\uc870\uac00 \ubcf4\ub2e4 \uade0\uc77c\ud558\uace0 \uc5f0\uc131 \uad6c\uc131\uc73c\ub85c \uc7ac\ubc30\uc5f4\ub41c \ud6c4 \uae09\uc18d \ub2f4\uae08\uc9c8\ub429\ub2c8\ub2e4. \uc774 \uacf5\uc815\uc740 \ub0b4\ubd80 \uc751\ub825\uc744 \uc644\ud654\ud558\ub294 \ub370 \ub3c4\uc6c0\uc774 \ub420 \ubfd0\ub9cc \uc544\ub2c8\ub77c \uac15\ucca0\uc758 \ub0b4\uc2dd\uc131\uc744 \ud5a5\uc0c1\uc2dc\ud0b5\ub2c8\ub2e4.<\/p>\n<h2 id=\"summary-chart-of-what-is-the-difference-between-304-and-420-stainless-steel\">304\uc640 440 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc758 \ucc28\uc774\uc810 \uc694\uc57d \ucc28\ud2b8<\/h2>\n<table border=\"1\">\n<tbody>\n<tr>\n<th>\uae30\ub2a5<\/th>\n<th>304 \uc2a4\ud14c\uc778\ub808\uc2a4 \uc2a4\ud2f8<\/th>\n<th>440 \uc2a4\ud14c\uc778\ub808\uc2a4 \uc2a4\ud2f8<\/th>\n<\/tr>\n<tr>\n<td>1\ucc28 \ud569\uae08 \uc6d0\uc18c<\/td>\n<td>18% \ud06c\ub86c, 8% \ub2c8\ucf08<\/td>\n<td>16-18% \ud06c\ub86c, 0% \ub2c8\ucf08, 0.6-1.2% \ud0c4\uc18c<\/td>\n<\/tr>\n<tr>\n<td>\ub0b4\uc2dd\uc131<\/td>\n<td>\ub192\uc74c<\/td>\n<td>\ubcf4\ud1b5<\/td>\n<\/tr>\n<tr>\n<td>\uacbd\ub3c4<\/td>\n<td>Lower<\/td>\n<td>\ub354 \ub192\uc74c<\/td>\n<\/tr>\n<tr>\n<td>\uc131\ud615\uc131<\/td>\n<td>\ub192\uc74c<\/td>\n<td>Lower<\/td>\n<\/tr>\n<tr>\n<td>\uae30\uacc4 \uac00\uacf5\uc131<\/td>\n<td>\ub354 \uc27d\uac8c<\/td>\n<td>\ub354 \ub3c4\uc804\uc801\uc778<\/td>\n<\/tr>\n<tr>\n<td>\uc560\ud50c\ub9ac\ucf00\uc774\uc158<\/td>\n<td>\uc8fc\ubc29\uac00\uc804, \uc790\ub3d9\ucc28\ubd80\ud488, \uc758\ub8cc\uae30\uae30<\/td>\n<td>\uc808\uc0ad \uacf5\uad6c, \uc218\uc220 \ub3c4\uad6c, \ubca0\uc5b4\ub9c1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 id=\"conclusion\">\uacb0\ub860<\/h2>\n<p>\uacb0\ub860\uc801\uc73c\ub85c 440 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uacfc 304 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc744 \ube44\uad50\ud560 \ub54c \uc8fc\uc694 \ucc28\uc774\uc810\uc740 \ud654\ud559\uc801 \uc870\uc131, \uacbd\ub3c4, \ub0b4\uc2dd\uc131 \ubc0f \uc6a9\ub3c4\uc5d0 \uc788\uc2b5\ub2c8\ub2e4. \ud0c4\uc18c \ud568\ub7c9\uc774 \ub192\uc740 440 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8\uc740 \uacbd\ub3c4\uc640 \ubaa8\uc11c\ub9ac \uc720\uc9c0\ub825\uc774 \ub6f0\uc5b4\ub098 \uc808\uc0ad \uacf5\uad6c \ubc0f \ube14\ub808\uc774\ub4dc\uc5d0 \uc801\ud569\ud569\ub2c8\ub2e4. \uadf8\ub7ec\ub098 304 \uc2a4\ud14c\uc778\ub808\uc2a4 \uc2a4\ud2f8\uc5d0 \ube44\ud574 \ubd80\uc2dd\uc5d0 \ub300\ud55c \uc800\ud56d\ub825\uc774 \ub5a8\uc5b4\uc9d1\ub2c8\ub2e4. \ubc18\uba74, \ud06c\ub86c \ud568\uc720\ub7c9\uc774 \ub9ce\uace0 \ud0c4\uc18c \ud568\uc720\ub7c9\uc774 \uc801\uc740 304 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc740 \uc6b0\uc218\ud55c \ub0b4\uc2dd\uc131\uc744 \uc81c\uacf5\ud558\uba70 \uc2dd\ud488 \uac00\uacf5, \uc758\ub8cc \uc7a5\ube44 \ub4f1 \ub354\uc6b1 \uac00\ud639\ud55c \ud658\uacbd\uc5d0\uc11c \uc0ac\uc6a9\ub418\ub294 \uad11\ubc94\uc704\ud55c \uc751\uc6a9 \ubd84\uc57c\uc5d0 \ub354\uc6b1 \uc801\ud569\ud569\ub2c8\ub2e4. \ub530\ub77c\uc11c 440\uacfc 304 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15 \uc0ac\uc774\uc758 \uc120\ud0dd\uc740 \uc751\uc6a9 \ubd84\uc57c\uc758 \ud2b9\uc815 \uc694\uad6c \uc0ac\ud56d, \uac15\ub3c4, \ub0b4\uad6c\uc131 \ubc0f \ubd80\uc2dd \uc800\ud56d\uc131\uacfc \uac19\uc740 \uade0\ud615 \uc694\uc18c\uc5d0 \ub530\ub77c \ub2ec\ub77c\uc9d1\ub2c8\ub2e4.<\/p>","protected":false},"excerpt":{"rendered":"<p>\ubaa9\ucc28 SS420 \ubc0f SS304: \uc5b4\ub290 \uac83\uc774 \ub354 \uc88b\uc2b5\ub2c8\uae4c? 304 \ub300 440 \uc2a4\ud14c\uc778\ub808\uc2a4\uac15 \uc0ac\uc6a9\uc758 \ub2e8\uc810 \ubc0f \uc7a5\uc810 \uc6a9\ub3c4: 440 \ub300 304 \uc2a4\ud14c\uc778\ub808\uc2a4\uac15 \uc0ac\uc6a9\ucc98 \ub0b4\uc2dd\uc131: 440 \uc2a4\ud14c\uc778\ub808\uc2a4\uac15 \ub300 304 440 \ubc0f 304 \uc2a4\ud14c\uc778\ub808\uc2a4\uac15\uc758 \uc870\uc131 \ucc28\uc774 \uae30\uacc4\uc801 \ud2b9\uc131: 440 \ubc0f 304 \uc2a4\ud14c\uc778\ub808\uc2a4\uac15 \uae30\uacc4 \uac00\uacf5\uc131 \ubc0f \uc131\ud615\uc131 \ube44\uad50: 440 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