{"id":8805,"date":"2025-06-15T02:00:17","date_gmt":"2025-06-15T02:00:17","guid":{"rendered":"https:\/\/premiumalu.com\/7021-aluminum-the-ultimate-guide-to-its-uses\/"},"modified":"2026-10-08T03:22:52","modified_gmt":"2026-10-08T03:22:52","slug":"7021-%ec%95%8c%eb%a3%a8%eb%af%b8%eb%8a%84-%ed%99%9c%ec%9a%a9%ec%97%90-%eb%8c%80%ed%95%9c-%ea%b6%81%ea%b7%b9%ec%a0%81%ec%9d%b8-%ea%b0%80%ec%9d%b4%eb%93%9c","status":"publish","type":"post","link":"https:\/\/premiumalu.com\/ko\/7021-aluminum-the-ultimate-guide-to-its-uses\/","title":{"rendered":"7021 \uc54c\ub8e8\ubbf8\ub284: \ud2b9\uc131, \uc870\uc9c8 \ubc0f \uac00\uacf5 \uac00\uc774\ub4dc"},"content":{"rendered":"<h2 class=\"wp-block-heading\">7021 \uc54c\ub8e8\ubbf8\ub284\uc774\ub780 \ubb34\uc5c7\uc778\uac00?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">7021\uc740 7xxx \uacc4\uc5f4\uc758 \uc5f4\ucc98\ub9ac \uac00\ub2a5\ud55c Al-Zn-Mg \ud569\uae08\uc73c\ub85c, EN AW-7021 (AlZn5.5Mg1.5) \ubc0f UNS A97021\ub85c \ub4f1\ub85d\ub418\uc5b4 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub294 \ubd80\ud488\uc774 \uc911\uc808\uc0ad \uac00\uacf5\uc744 \uac70\uce58\uba74\uc11c\ub3c4 \uacf5\ucc28\ub97c \uc720\uc9c0\ud574\uc57c \ud558\uac70\ub098, \uc6a9\uc811 \ud6c4\uc5d0\ub3c4 7xxx \uac15\ub3c4 \ub4f1\uae09\uc5d0 \ub3c4\ub2ec\ud574\uc57c \ud558\ub294 \uacbd\uc6b0\uc5d0 \uc120\ud0dd\ud558\ub294 7xxx \ub4f1\uae09\uc785\ub2c8\ub2e4 \u2014 7075\uac00 \ud560 \uc218 \uc5c6\ub294 \ub450 \uac00\uc9c0\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774 \ud569\uae08\uc774 \uac10\uc218\ud558\ub294 \uac83\uc740 \uad6c\ub9ac\uc785\ub2c8\ub2e4. 7075\ub294 1.2\u20132.0%\uc758 \uad6c\ub9ac\ub97c \ud568\uc720\ud558\uc5ec \ucd5c\ub300 \uac15\ub3c4\ub97c \uc5bb\ub294 \ub300\uc2e0 \uc6a9\uc811\uc131\uacfc \uc751\ub825 \ubd80\uc2dd \uc131\ub2a5\uc744 \ud76c\uc0dd\ud569\ub2c8\ub2e4. 7021\uc740 \uad6c\ub9ac\ub97c 0.25%\ub85c \uc81c\ud55c\ud558\uace0, \uadf8 \uac15\ub3c4\uc758 \uc57d 30%\ub97c \ud3ec\uae30\ud558\ub294 \ub300\uc2e0 \uae68\ub057\ud558\uac8c \uac00\uacf5\ub418\uace0, \uae4a\uc740 \uc808\uc0ad\uc5d0\uc11c\ub3c4 \ud3c9\ud0c4\ub3c4\ub97c \uc720\uc9c0\ud558\uba70, \uc735\ud569 \uc6a9\uc811\uc774 \uac00\ub2a5\ud569\ub2c8\ub2e4 \u2014 \uc774\ub294 \ub098\uba38\uc9c0 7xxx \uacc4\uc5f4\uc774 \uc81c\uacf5\ud558\uc9c0 \ubabb\ud558\ub294 \uc870\ud569\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">7021\uc758 \ud654\ud559 \uc870\uc131<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\uc544\ub798 \ud55c\uacc4\uac12\uc740 EN 573-3\uc5d0 \ub530\ub978 \ub4f1\ub85d \uac12\uc785\ub2c8\ub2e4. \uc778\uc99d\uc11c\uc5d0\uc11c \uc774 \ubc94\uc704\ub97c \ubc97\uc5b4\ub09c \uac12\uc740 \ub2e4\ub978 7021\uc774 \uc544\ub2c8\ub77c \ub2e4\ub978 \ud45c\uc900\uc5d0\uc11c \ube44\ub86f\ub41c \uac83\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>\uc694\uc18c<\/td><td>\ubb34\uac8c %<\/td><td>\uc5ed\ud560<\/td><\/tr><tr><td>\uc2e4\ub9ac\ucf58(Si)<\/td><td>\ucd5c\ub300 0.25<\/td><td>\u6742\u8d28\u9650\u91cf<\/td><\/tr><tr><td>\ucca0(Fe)<\/td><td>0.40 \ucd5c\ub300<\/td><td>\u6742\u8d28\u9650\u91cf<\/td><\/tr><tr><td>\uad6c\ub9ac(Cu)<\/td><td>\ucd5c\ub300 0.25<\/td><td>\ud569\uae08\uc744 \uc6a9\uc811 \uac00\ub2a5\ud558\uac8c \uc720\uc9c0\ud558\ub294 \uc0c1\ud55c<\/td><\/tr><tr><td>\ub9dd\uac04(Mn)<\/td><td>\ucd5c\ub300 0.10<\/td><td>\u6742\u8d28\u9650\u91cf<\/td><\/tr><tr><td>\ub9c8\uadf8\ub124\uc298(Mg)<\/td><td>1.2 - 1.8<\/td><td>\uac15\ud654 \uc6d0\uc18c<\/td><\/tr><tr><td>\ud06c\ub86c(Cr)<\/td><td>\ucd5c\ub300 0.05<\/td><td>\u6742\u8d28\u9650\u91cf<\/td><\/tr><tr><td>\uc544\uc5f0(Zn)<\/td><td>5.0 - 6.0<\/td><td>\u4e3b\u8981\u5f3a\u5316\u5143\u7d20<\/td><\/tr><tr><td>\ud2f0\ud0c0\ub284(Ti)<\/td><td>\ucd5c\ub300 0.10<\/td><td>\u6676\u7c92\u7ec6\u5316\u5242<\/td><\/tr><tr><td><strong>\uc9c0\ub974\ucf54\ub284(Zr)<\/strong><\/td><td><strong>0.08 - 0.18<\/strong><\/td><td>\uc7ac\uacb0\uc815 \uc628\ub3c4\ub97c \ub192\uc774\uace0 \uc6a9\uc811\uc131\uc744 \uc9c0\uc6d0<\/td><\/tr><tr><td>\uae30\ud0c0, \uac01\uac01 \/ \ud569\uacc4<\/td><td>0.05 \/ 0.15<\/td><td>\u2014<\/td><\/tr><tr><td>\uc54c\ub8e8\ubbf8\ub284(Al)<\/td><td>\ub098\uba38\uc9c0<\/td><td>\ube44\uadc0\uae08\uc18d<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\uc758\ub3c4\uc801\uc73c\ub85c \ucca8\uac00\ub418\ub294 \ud589\uc740 \uc544\uc5f0, \ub9c8\uadf8\ub124\uc298, \uc9c0\ub974\ucf54\ub284 \uc138 \uac00\uc9c0\ubfd0\uc774\uba70, \ub2e4\ub978 \ubaa8\ub4e0 \uc6d0\uc18c\ub294 \uc874\uc7ac\ud560 \uc218 \uc788\ub294 \uc591\uc5d0 \ub300\ud55c \uc0c1\ud55c\uc785\ub2c8\ub2e4. \uad6c\ub9ac\ub294 \uc774 \ub4f1\uae09\uc774 0.25%\ub85c \uc81c\ud55c\ud558\ubbc0\ub85c \uac00\uc7a5 \uba3c\uc800 \ud655\uc778\ud574\uc57c \ud560 \ud589\uc785\ub2c8\ub2e4. \uc54c\ub8e8\ubbf8\ub284\uc740 \uace0\uc815 \ubc94\uc704\uac00 \uc544\ub2c8\ub77c \uc794\ub7c9\uc73c\ub85c \ub4f1\ub85d\ub429\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\uc5f4\ucc98\ub9ac \uc0c1\ud0dc\uc5d0 \ub530\ub978 \uae30\uacc4\uc801 \ud2b9\uc131<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">7021\uc740 \uc8fc\ub85c T6 \ubc0f T651\ub85c \uc8fc\ubb38\ub429\ub2c8\ub2e4. EN 485-2\ub294 \uc2dc\ud2b8, \uc2a4\ud2b8\ub9bd \ubc0f \ud50c\ub808\uc774\ud2b8\ub97c \ub2e4\ub8e8\uace0, EN 755-2\ub294 \uc555\ucd9c \ubc14, \ud29c\ube0c \ubc0f \ud504\ub85c\ud30c\uc77c\uc744 \ub2e4\ub8f9\ub2c8\ub2e4.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>\uc18d\uc131<\/td><td>\uac00\uce58<\/td><td>\uc0c1\ud0dc<\/td><\/tr><tr><td>\uc778\uc7a5 \uac15\ub3c4, Rm<\/td><td>\ucd5c\uc18c 400 MPa (\u2248 \uc77c\ubc18\uac12 410 MPa)<\/td><td>T6, \uc2dc\ud2b8 \ubc0f \ud50c\ub808\uc774\ud2b8, EN 485-2<\/td><\/tr><tr><td>\ub0b4\ub825, Rp0.2<\/td><td>\ucd5c\uc18c 350 MPa<\/td><td>T6, \uc2dc\ud2b8 \ubc0f \ud50c\ub808\uc774\ud2b8, EN 485-2<\/td><\/tr><tr><td>\uc5f0\uc2e0\uc728, A \/ A50<\/td><td>\ucd5c\uc18c 10% \/ \ucd5c\uc18c 8%<\/td><td>T6, \uc2dc\ud2b8 \ubc0f \ud50c\ub808\uc774\ud2b8, EN 485-2<\/td><\/tr><tr><td>\uacbd\ub3c4<\/td><td>\u2248120 HBW<\/td><td>T6<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>\ubb3c\ub9ac\uc801 \ud2b9\uc131<\/td><td>\uac00\uce58<\/td><\/tr><tr><td>\ubc00\ub3c4<\/td><td>2.80 g\/cm\u00b3<\/td><\/tr><tr><td>\ud0c4\uc131 \uacc4\uc218<\/td><td>70 GPa<\/td><\/tr><tr><td>\uc5f4 \uc804\ub3c4\uc131<\/td><td>125 \u2013 155 W\/m\u00b7K<\/td><\/tr><tr><td>\uc5f4\ud33d\ucc3d<\/td><td>23 \u00b5m\/m\u00b7K<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">350 MPa\uc758 \ub0b4\ub825\uc740 6061-T6\ubcf4\ub2e4 \uc57d 27% \ub192\uace0 7075-T6\ubcf4\ub2e4 \uc57d 30% \ub0ae\uc2b5\ub2c8\ub2e4 \u2014 \ucd5c\ub300 \uac15\ub3c4\ub294 \uc544\ub2c8\uc9c0\ub9cc \uc9c4\uc815\ud55c 7xxx \ub4f1\uae09\uc785\ub2c8\ub2e4. \uc5f4\uc804\ub3c4\uc728\uc740 \uc0c1\uc5c5\uc801\uc73c\ub85c \uacb0\uc815\uc801\uc778 \ub610 \ub2e4\ub978 \uc218\uce58\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4: 125\u2013155 W\/m\u00b7K\ub294 \uc54c\ub8e8\ubbf8\ub284 \uae08\ud615\uc774 \uac15\ucca0 \uae08\ud615\ubcf4\ub2e4 \ube60\ub974\uac8c \uc0ac\uc774\ud074\ud560 \uc218 \uc788\uac8c \ud558\ub294 \uac12\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc587\uc740 \ub450\uaed8\ub294 \ud50c\ub808\uc774\ud2b8 \ucd5c\uc18c\uac12\ubcf4\ub2e4 \ub192\uac8c \ub098\ud0c0\ub0a9\ub2c8\ub2e4 \u2014 1.5~3 mm\uc758 \uc591\uadf9\uc0b0\ud654 \ud488\uc9c8 \uc2dc\ud2b8\ub294 T6 \ubc0f T651\uc758 \uacbd\uc6b0 460\u2013480 MPa\uc5d0\uc11c \uc77c\uc0c1\uc801\uc73c\ub85c \uc2dc\ud5d8\ub429\ub2c8\ub2e4. EN 485-2 \ucd5c\uc18c\uac12\uc740 \uc124\uacc4 \uac12\uc73c\ub85c, \ub354 \uc587\uc740 \uc218\uce58\ub294 \ubc00 \uc131\ub2a5\uc73c\ub85c \uc77d\uc73c\uc2ed\uc2dc\uc624; \uadc0\ud558\uc758 \uc5f4\ucc98\ub9ac\uc5d0 \ub300\ud55c \uc778\uc99d\uc11c\uac00 \uc5b4\ub290 \uac83\uc774 \uc801\uc6a9\ub418\ub294\uc9c0 \uacb0\uc815\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">7021\u7684\u5e94\u7528\u9886\u57df<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7021-applications.webp\" alt=\"7021-\uc751\uc6a9 \ubd84\uc57c\" class=\"wp-image-10692\" srcset=\"https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7021-applications.webp 800w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7021-applications-300x225.webp 300w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7021-applications-768x576.webp 768w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7021-applications-16x12.webp 16w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7021-applications-600x450.webp 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\uc138 \uac00\uc9c0 \uc751\uc6a9 \uadf8\ub8f9\uc774 \uc774 \ub4f1\uae09\uc758 \ub300\ubd80\ubd84\uc744 \ucc28\uc9c0\ud558\uba70, \uac01\uac01\uc740 \ub3d9\uc77c\ud55c \ud2b9\uc131 \u2014 \ud50c\ub808\uc774\ud2b8\uc758 \ub0ae\uc740 \uc794\ub958 \uc751\ub825\uacfc \uc790\uc720 \uac00\uacf5\uc131 \u2014 \uc5d0\uc11c \ube44\ub86f\ub429\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uae08\ud615 \ubc0f \ud234\ub9c1 \ud50c\ub808\uc774\ud2b8<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ud575\uc2ec \uc2dc\uc7a5. \uc0ac\ucd9c \ubc0f \ube14\ub85c\uc6b0 \uae08\ud615, \uc5f4\uc131\ud615 \ubc0f \uc218\uc9c0 \uc774\uc1a1 \ud234\ub9c1 \ubaa8\ub450 <a href=\"https:\/\/premiumalu.com\/ko\/%ec%a0%9c%ed%92%88\/7021-%ec%95%8c%eb%a3%a8%eb%af%b8%eb%8a%84-%ed%95%a9%ea%b8%88\/\">7021 \uce90\ube44\ud2f0 \ud50c\ub808\uc774\ud2b8<\/a>, \ub97c \uc0ac\uc6a9\ud558\uba70, \ubca0\uc774\uc2a4 \ud50c\ub808\uc774\ud2b8\uc640 \uae30\uacc4 \uace0\uc815 \ud14c\uc774\ube14\ub3c4 \ub9c8\ucc2c\uac00\uc9c0\uc785\ub2c8\ub2e4. \ub0ae\uc740 \ub0b4\ubd80 \uc751\ub825\uc774 \uadf8 \uc774\uc720\uc785\ub2c8\ub2e4: \uae4a\uc740 \uce90\ube44\ud2f0\ub294 \uc7ac\ub8cc\uac00 \uc81c\uac70\ub418\uc5b4\ub3c4 \ud06c\ub9ac\ud504 \ub300\uc2e0 \ud615\uc0c1\uc744 \uc720\uc9c0\ud558\uba70, \uac15\ucca0 \ud234\ub9c1\uc5d0 \ubc18\ub300\ud558\ub294 \ub17c\uac70\ub294 \uac15\ub3c4\uac00 \uc544\ub2c8\ub77c \uc0ac\uc774\ud074 \uc2dc\uac04\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uac00\uacf5 \ubc0f \uc720\uc555 \ubd80\ud488<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ub9e4\ub2c8\ud3f4\ub4dc \ube14\ub85d, \ubc38\ube0c \ubc14\ub514, \uc7a5\ucc29 \ud50c\ub808\uc774\ud2b8 \ubc0f \uad6c\ub3d9 \ubd80\ud488\uc740 \ub3d9\uc77c\ud55c \uc808\uc0ad \uac70\ub3d9 \u2014 \uc9e7\uc740 \uce69, \uae68\ub057\ud55c \ud45c\uba74, \uc7a5\uc2dc\uac04 \uc6b4\uc804\uc5d0\uc11c\ub3c4 \uc720\uc9c0\ub418\ub294 \uacf5\uad6c \uc218\uba85 \u2014 \uc744 \ud65c\uc6a9\ud569\ub2c8\ub2e4. \uc808\uc0ad\uc774 \uae4a\uac70\ub098 \ube44\ub300\uce6d\uc778 \uacbd\uc6b0 T651\uc744 \uc9c0\uc815\ud558\uc2ed\uc2dc\uc624.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uc6a9\uc811 \uc5b4\uc148\ube14\ub9ac<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">7021\uc740 \uc735\ud569 \uc6a9\uc811\uc774 \uac00\ub2a5\ud55c \uba87 \uc548 \ub418\ub294 Al-Zn-Mg \ud569\uae08 \uc911 \ud558\ub098\uc774\uba70, \uc774\ub294 \uad6c\ub9ac \uc0c1\ud55c\uacfc \uc9c0\ub974\ucf54\ub284 \ucca8\uac00\uc5d0\uc11c \ube44\ub86f\ub429\ub2c8\ub2e4. \ubd80\ud488\uc5d0 7xxx \uac15\ub3c4\uc640 \uc6a9\uc811 \uc870\uc778\ud2b8\uac00 \ubaa8\ub450 \ud544\uc694\ud55c \uacbd\uc6b0, \uc774\uac83\uc774 \uc774 \ub4f1\uae09\uc774 \uc9c0\uc815\ub418\ub294 \uc774\uc720\uc785\ub2c8\ub2e4. \ub300\ub7c9 \uc6a9\uc811 \uad6c\uc870\ubb3c\uc5d0\uc11c\ub294, <a href=\"https:\/\/premiumalu.com\/ko\/%eb%a7%88%ec%8a%a4%ed%84%b0%eb%a7%81-7005-%ec%95%8c%eb%a3%a8%eb%af%b8%eb%8a%84-%ed%95%a9%ea%b8%88-%ec%a2%85%ed%95%a9-%ea%b0%80%ec%9d%b4%eb%93%9c\/\">7005<\/a> \ub610\ub294 <a href=\"https:\/\/premiumalu.com\/ko\/%ec%a0%9c%ed%92%88\/7020-%ec%95%8c%eb%a3%a8%eb%af%b8%eb%8a%84-%ed%95%a9%ea%b8%88\/\">7020<\/a> \uc774 \uc77c\ubc18\uc801\uc73c\ub85c \ub354 \uc800\ub834\ud55c \uacbd\ub85c\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">7021\u72b6\u6001\u9009\u9879<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">7021\uc740 \uc138 \uac00\uc9c0 \uc0c1\ud0dc\ub85c \uacf5\uae09\ub418\uba70, \uac01\uac01 \ub2e4\ub978 \uac00\uacf5 \uc694\uad6c \uc0ac\ud56d\uc744 \ucda9\uc871\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>\uc131\uc9c8<\/td><td>\ucc98\ub9ac \ubc29\ubc95<\/td><td>\uac15\ub3c4 \ub4f1\uae09<\/td><td>\ucd5c\uc0c1\uc758 \ub300\uc0c1<\/td><td>\ud53c\ud574\uc57c \ud560 \uacbd\uc6b0<\/td><\/tr><tr><td>T6<\/td><td>\uc5f4\ucc98\ub9ac \ubc0f \uc778\uc704\uc801 \uc219\uc131 \uc194\ub8e8\uc158<\/td><td>EN 485-2 \ucd5c\uc18c\uac12<\/td><td>\uae08\ud615, \uc77c\ubc18 \uad6c\uc870 \ubc0f \uc6a9\uc811 \ubd80\ud488\uc73c\ub85c \uc0ac\uc6a9 \uc900\ube44 \uc644\ub8cc \uc0c1\ud0dc\ub85c \uacf5\uae09<\/td><td>\uc794\ub958 \uc751\ub825\uc774 \uc911\uc694\ud55c \uae4a\uc740 \uac00\uacf5<\/td><\/tr><tr><td>T651<\/td><td>T6\uc5d0 1\u20133%\uc758 \uc81c\uc5b4\ub41c \uc751\ub825 \uc644\ud654 \uc2a4\ud2b8\ub808\uce58 \ucd94\uac00<\/td><td>T6\uc640 \ub3d9\uc77c \ub4f1\uae09<\/td><td>\uc911\uc808\uc0ad \ubd80\ud488: \uae4a\uc740 \ud3ec\ucf13, \ube44\ub300\uce6d \uc808\uc0ad, \uc5c4\uaca9\ud55c \ud3c9\ud0c4\ub3c4<\/td><td>\uac00\ubcbc\uc6b4 \ud2b8\ub9ac\ubc0d\uc774\ub098 \ub4dc\ub9b4\ub9c1\ub9cc \uad00\ub828\ub41c \uacbd\uc6b0\uc5d0\ub294 \ubd88\ud544\uc694<\/td><\/tr><tr><td>T62<\/td><td>\uc131\ud615 \ub610\ub294 \uc81c\uc791 \ud6c4 \uc6a9\uccb4\ud654 \ucc98\ub9ac \ubc0f \uc2dc\ud6a8<\/td><td>T6\uc5d0 \uc0c1\ub2f9<\/td><td>\uc2dc\ud6a8 \ucc98\ub9ac\ub41c \uc0c1\ud0dc\ub85c \uacf5\uae09\ub418\ub294 \ub300\uc2e0 \uc644\uc131 \ubd80\ud488\uc73c\ub85c \uc870\ub9bd \ud6c4 \uc2dc\ud6a8<\/td><td>\uc6d0\uc790\uc7ac \uc8fc\ubb38 \u2014 T6 \ub610\ub294 T651 \uc9c0\uc815<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">7021\u4e0e7075\u53ca6061\u7684\u5bf9\u6bd4<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7021-7075-6061.webp\" alt=\"7021-7075-6061\" class=\"wp-image-10694\" srcset=\"https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7021-7075-6061.webp 800w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7021-7075-6061-300x225.webp 300w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7021-7075-6061-768x576.webp 768w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7021-7075-6061-16x12.webp 16w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7021-7075-6061-600x450.webp 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774 \uc138 \ud569\uae08\uc740 \ub300\ubd80\ubd84\uc758 \uace0\uac15\ub3c4 \uc54c\ub8e8\ubbf8\ub284 \uacb0\uc815\uc744 \ucee4\ubc84\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>\uc18d\uc131<\/td><td>7021-T6<\/td><td>7075-T6<\/td><td>6061-T6<\/td><\/tr><tr><td>\uc778\uc7a5\uac15\ub3c4<\/td><td>\ucd5c\uc18c 400 MPa (\u2248 \uc77c\ubc18\uac12 410 MPa)<\/td><td>\uc77c\ubc18\uac12 572 MPa<\/td><td>\uc77c\ubc18\uac12 310 MPa<\/td><\/tr><tr><td>\ub0b4\ub825<\/td><td>\ucd5c\uc18c 350 MPa<\/td><td>503 MPa \uc77c\ubc18\uc801<\/td><td>276 MPa \uc77c\ubc18\uc801<\/td><\/tr><tr><td>\uc2e0\uc7a5<\/td><td>10% \ucd5c\uc18c<\/td><td>~11%<\/td><td>12\u201317%<\/td><\/tr><tr><td>\ubc00\ub3c4<\/td><td>2.80 g\/cm\u00b3<\/td><td>2.81g\/cm\u00b3<\/td><td>2.70g\/cm\u00b3<\/td><\/tr><tr><td>\uc794\ub958 \uc751\ub825 \/ \uc548\uc815\uc131<\/td><td>\ub9e4\uc6b0 \ub0ae\uc74c; \ud234\ub9c1 \ud50c\ub808\uc774\ud2b8 \ub4f1\uae09<\/td><td>\ub192\uc74c; \uc911\uc808\uc0ad \uac00\uacf5 \uc911 \ubcc0\ud615 \ubc1c\uc0dd<\/td><td>\ubcf4\ud1b5<\/td><\/tr><tr><td>\uae30\uacc4 \uac00\uacf5\uc131<\/td><td>\uc6b0\uc218\ud568; \uce69\uc774 \uc9e7\uace0 \uad11\ud0dd \uc591\ud638<\/td><td>Good<\/td><td>Good<\/td><\/tr><tr><td>\uc6a9\uc811\uc131<\/td><td>\uc591\ud638, \uc801\uaca9 MIG\/TIG \ubc0f 5356 \ub610\ub294 5183 \ud544\ub7ec \uc0ac\uc6a9 \uc2dc<\/td><td>\uc735\ud569 \uc6a9\uc811\uc5d0\ub294 \uad8c\uc7a5\ub418\uc9c0 \uc54a\uc74c<\/td><td>\uc6b0\uc218\ud568, \ubaa8\ub4e0 \uc77c\ubc18 \uacf5\uc815 \uc801\uc6a9 \uac00\ub2a5<\/td><\/tr><tr><td>\ub0b4\uc2dd\uc131<\/td><td>\ubcf4\ud1b5; \ucf54\ud305 \ub610\ub294 \uc544\ub178\ub2e4\uc774\uc9d5 \ud544\uc694<\/td><td>\uc81c\ud55c\uc801; \ucf54\ud305 \ub610\ub294 \ud074\ub798\ub529 \ud544\uc694<\/td><td>Good<\/td><\/tr><tr><td>\uc77c\ubc18\uc801 \uc801\uc6a9 \ubd84\uc57c<\/td><td>\uae08\ud615, \ud234\ub9c1 \ud50c\ub808\uc774\ud2b8, \uac00\uacf5 \ubd80\ud488 \ubc0f \uc720\uc555 \ubd80\ud488, \uc6a9\uc811 \uc5b4\uc148\ube14\ub9ac<\/td><td>\uace0\uc751\ub825 \uac00\uacf5 \ubd80\ud488, \uae30\uccb4 \uad6c\uc870<\/td><td>\uc77c\ubc18 \uc81c\uc791, \ud574\uc591, \uac74\ucd95<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">7021 \uc5f4\uc740 EN 485-2 \ucd5c\uc18c\uac12\uc774\uba70, 7075 \ubc0f 6061 \uc5f4\uc740 \uacf5\ud45c\ub41c \uc77c\ubc18\uc801 \uac12\uc785\ub2c8\ub2e4. \uc18c\uc218\uc810 \uc774\ud558\uac00 \uc544\ub2cc \uc21c\uc11c\ub97c \ube44\uad50\ud558\uace0, \ubc00 \uc778\uc99d\uc11c\uc5d0\uc11c \uc790\uccb4 \ud615\uc0c1 \ubc0f \ub450\uaed8\uc5d0 \uc801\uc6a9\ub418\ub294 \uc218\uce58\ub97c \ud655\uc778\ud558\uc2ed\uc2dc\uc624.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">7021 \uc791\uc5c5 \uc2dc \uc720\uc758\uc0ac\ud56d<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\uac00\uacf5<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uac00\uacf5\uc131\uc774 \uc774 \ub4f1\uae09\uc758 \uc874\uc7ac \uc774\uc720\uc774\uba70, 7021\uc740 7xxx \ud569\uae08 \uc911 \ucd5c\uc0c1\uc704 \uc218\uc900\uc758 \uc131\ub2a5\uc744 \ubc1c\ud718\ud569\ub2c8\ub2e4. \uce69\uc774 \uc9e7\uac8c \ub04a\uc5b4\uc9c0\uace0 \ud45c\uba74 \uc870\ub3c4\uac00 \uae68\ub057\ud558\uba70, \uc911\uac04\uc5d0\uc11c \ub192\uc740 \uc2a4\ud540\ub4e4 \uc18d\ub3c4\uc758 \ucd08\uacbd \uacf5\uad6c\uac00 \uc798 \uacac\ub525\ub2c8\ub2e4. \uace0\uc18d\ub3c4\uac15\uc740 \uc595\uc740 \ud615\uc0c1\uc5d0 \uc0ac\uc6a9 \uac00\ub2a5\ud558\uc9c0\ub9cc, \uacbd\uc81c\uc131\uc740 \ucd08\uacbd \uacf5\uad6c\uc5d0 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uae4a\uc740 \ud3ec\ucf13, \ube44\ub300\uce6d \uc808\uc0ad \ub610\ub294 \uc5c4\uaca9\ud55c \ud3c9\ud0c4\ub3c4 \uacf5\ucc28\uc758 \uacbd\uc6b0 T6 \ub300\uc2e0 T651\uc744 \uc9c0\uc815\ud558\uc2ed\uc2dc\uc624. \uc751\ub825 \uc81c\uac70 \uc2a4\ud2b8\ub808\uce6d\uc774 \uc808\uc0ad \uc804\uc5d0 \uc801\uc6a9\ub418\ubbc0\ub85c, \uac00\uacf5 \ub3c4\uc911 \ud50c\ub808\uc774\ud2b8\uac00 \uc790\uccb4 \uc751\ub825 \ud574\uc18c\ub85c \ud718\uc5b4\uc9c0\ub294 \uc77c\uc774 \uc5c6\uc2b5\ub2c8\ub2e4. \ud2b8\ub9ac\ubc0d, \ub4dc\ub9b4\ub9c1 \ubc0f \uacbd\uc808\uc0ad\uc758 \uacbd\uc6b0 T6\uc73c\ub85c \ucda9\ubd84\ud788 \uc548\uc815\uc801\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uc6a9\uc811<\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7021-welding-conditions.webp\" alt=\"7021-\uc6a9\uc811 \uc870\uac74\" class=\"wp-image-10695\" srcset=\"https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7021-welding-conditions.webp 800w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7021-welding-conditions-300x225.webp 300w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7021-welding-conditions-768x576.webp 768w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7021-welding-conditions-16x12.webp 16w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7021-welding-conditions-600x450.webp 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">7021\uc740 \uc735\ud569 \uc6a9\uc811\uc774 \uac00\ub2a5\ud558\uba70, \uc774\uac83\uc774 \ucc28\ubcc4\uc810\uc785\ub2c8\ub2e4 \u2014 \uc774\ub294 \uad6c\ub9ac \uc0c1\ud55c\uacfc \uc9c0\ub974\ucf54\ub284 \ucca8\uac00\uc5d0\uc11c \ube44\ub86f\ub429\ub2c8\ub2e4. \ud544\ub7ec\ub294 5xxx \ub4f1\uae09\uc778 5356 \ub610\ub294 5183\uc744 \uc0ac\uc6a9\ud558\uba70, \uc774\ub294 \uc6a9\uc735\uc9c0\uc5d0 \ucda9\ubd84\ud55c \ub9c8\uadf8\ub124\uc298\uc744 \uc720\uc9c0\ud558\uc5ec \uc751\uace0 \uade0\uc5f4\uc744 \ubc29\uc9c0\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud544\ub7ec \uc120\ud0dd \uc774\ud6c4\uc5d0\ub294 \uc7ac\ub8cc \ubb38\uc81c\uac00 \uc544\ub2cc \uc808\ucc28 \ubb38\uc81c\uc785\ub2c8\ub2e4: \uc81c\uc791\uc790\ub294 6xxx \uc791\uc5c5\uc6a9\uc73c\ub85c \uc791\uc131\ub41c \uc808\ucc28\ub97c \ub2f5\uc2b5\ud558\ub294 \ub300\uc2e0 \uc774 \ud569\uae08\uc5d0 \ub300\ud55c \uc6a9\uc811 \uc808\ucc28\ub97c \uc801\uaca9 \uc778\uc99d\ud574\uc57c \ud569\ub2c8\ub2e4. \ubaa8\uc7ac\uac00 \uc544\ub2cc \uc6a9\uc811\ubd80\uac00 \uac15\ub3c4\ub97c \uc81c\ud55c\ud558\ub294 \uc694\uc18c\uac00 \ub420 \uac83\uc73c\ub85c \uc608\uc0c1\ud558\uace0, \uc774\uc5d0 \ub9de\uac8c \ub2e8\uba74\uc744 \uc124\uacc4\ud558\uc2ed\uc2dc\uc624.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\ub0b4\uc2dd\uc131 \ubcf4\ud638<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ub300\ubd80\ubd84\uc758 \uc544\uc5f0 \ud568\ub7c9\uc774 \ub192\uc740 \uc54c\ub8e8\ubbf8\ub284\uacfc \ub9c8\ucc2c\uac00\uc9c0\ub85c, 7021\uc740 \ubcf4\ud1b5 \uc218\uc900\uc758 \ub0b4\uc2dd\uc131\uc744 \uac00\uc9c0\uba70 \uc625\uc678 \ub610\ub294 \uc2b5\ud55c \ud658\uacbd\uc5d0\uc11c \ubcf4\ud638\uac00 \ud544\uc694\ud569\ub2c8\ub2e4. \ub300\ubd80\ubd84\uc758 \uacbd\uc6b0 \uc138 \uac00\uc9c0 \uc811\uadfc\ubc95\uc73c\ub85c \ucda9\ubd84\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\uc591\uadf9 \uc0b0\ud654.<\/strong> \ud669\uc0b0 \uc544\ub178\ub2e4\uc774\uc9d5\uc740 \uc81c\uc5b4\ub41c \uc0b0\ud654\ubb3c \uc7a5\ubcbd\uc744 \ud615\uc131\ud569\ub2c8\ub2e4. 6xxx \ud569\uae08\ubcf4\ub2e4 \uce35\uc774 \ub35c \uade0\uc77c\ud560 \uac83\uc73c\ub85c \uc608\uc0c1\ub418\uba70, \uc7a5\uc2dd\uc6a9 \ubd80\ud488\uc744 \ucd9c\ud558\ud558\uae30 \uc804\uc5d0 \uc0d8\ud50c\uc5d0\uc11c \ub9c8\uac10 \ub4f1\uae09\uc744 \ud655\uc778\ud558\uc2ed\uc2dc\uc624.<\/li>\n\n\n\n<li><strong>\ub3c4\uc7a5 \uc2dc\uc2a4\ud15c.<\/strong> \ud654\uc131 \ud53c\ub9c9 \ucc98\ub9ac, \uc5d0\ud3ed\uc2dc \ud504\ub77c\uc774\uba38 \ubc0f \ud3f4\ub9ac\uc6b0\ub808\ud0c4 \uc0c1\ub3c4\uac00 \ud45c\uc900 \uc0b0\uc5c5\uc6a9 \ub3c4\uc7a5 \uad6c\uc131\uc785\ub2c8\ub2e4. \ud45c\uba74 \ucc98\ub9ac\uac00 \ucf54\ud305\uc758 \uc720\uc9c0 \uc5ec\ubd80\ub97c \uacb0\uc815\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>\ubc30\uc218\ub97c \uace0\ub824\ud55c \uc124\uacc4.<\/strong> \ubb3c\uc774 \uace0\uc774\ub294 \ud3ec\ucf13, \ud2c8\uc0c8 \ubc0f \uc704\ub97c \ud5a5\ud55c \ud3c9\ud3c9\ud55c \uba74\uc744 \ud53c\ud558\uc2ed\uc2dc\uc624. \ud615\uc0c1 \uc120\ud0dd\uc774 \uc5b4\ub5a4 \ucf54\ud305 \ubcf4\uc218\ubcf4\ub2e4 \ub354 \ub9ce\uc740 \ubd80\uc2dd\uc744 \ubc29\uc9c0\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\uc0ac\uc6a9 \uc628\ub3c4 \ud55c\uacc4<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">7021\uc740 \uc11d\ucd9c \uacbd\ud654 \ud569\uae08\uc774\ubbc0\ub85c \uac15\ub3c4\ub294 \uc2dc\ud6a8 \ucc98\ub9ac\ub41c \uc0c1\ud0dc\uc758 \uacbd\ud654\uc0c1\uc774 \uc720\uc9c0\ub418\ub294\uc9c0\uc5d0 \ub2ec\ub824 \uc788\uc2b5\ub2c8\ub2e4. \uc57d 100\u2013120 \u00b0C \uc774\uc0c1\uc758 \uc5f0\uc18d \uc0ac\uc6a9\uc740 \ud15c\ud37c\ub97c \uacfc\uc2dc\ud6a8\uc2dc\ucf1c \ub0b4\uc99d\ub825\uc744 \uc800\ud558\uc2dc\ud0a4\uae30 \uc2dc\uc791\ud558\uba70, \uc57d 200 \u00b0C\uae4c\uc9c0\uc758 \ub2e8\uae30 \ub178\ucd9c\uc740 \uc124\uacc4 \ub4f1\uae09\uc740 \uc544\ub2c8\uc9c0\ub9cc \ud5c8\uc6a9 \uac00\ub2a5\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc9c0\ub974\ucf54\ub284\uc740 7075\uc5d0 \ube44\ud574 \uc774 \uacfc\uc815\uc744 \ub2a6\ucd94\uc9c0\ub9cc, \uc5b4\ub290 \ud569\uae08\ub3c4 \uace0\uc628\uc6a9 \uc120\ud0dd\uc774 \uc544\ub2d9\ub2c8\ub2e4. \uc9c0\uc18d\uc801\uc778 \uc5f4\uc774 \uac00\ud574\uc9c0\ub294 \uacbd\uc6b0 \ub0b4\uc5f4 \ub4f1\uae09\uc744 \uace0\ub824\ud558\uc2ed\uc2dc\uc624.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\uc7a5\uc810 \ubc0f \ud55c\uacc4 \uc694\uc57d<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>\ud329\ud130<\/td><td>\uc774\uc810<\/td><td>\uc81c\ud55c \uc0ac\ud56d<\/td><\/tr><tr><td>\uac00\uacf5 \uc911 \uc548\uc815\uc131<\/td><td>\uc794\ub958 \uc751\ub825 \ub9e4\uc6b0 \ub0ae\uc74c; \ud234\ub9c1 \ud50c\ub808\uc774\ud2b8 \ub4f1\uae09<\/td><td>\u2014<\/td><\/tr><tr><td>\uae30\uacc4 \uac00\uacf5\uc131<\/td><td>\uce69\uc774 \uc9e7\uace0 \ub9c8\uac10\uc774 \uae68\ub057\ud558\uba70 \uad11\ud0dd\uc131\uc774 \uc591\ud638<\/td><td>\uae4a\uac70\ub098 \ubd88\uade0\uc77c\ud55c \uc7ac\ub8cc \uc81c\uac70\uc5d0\ub294 T651 \uc9c0\uc815<\/td><\/tr><tr><td>\ud798<\/td><td>T6\uc5d0\uc11c \ub0b4\uc99d\ub825 \ucd5c\uc18c 350 MPa \u2014 \uc9c4\uc815\ud55c 7xxx \ub4f1\uae09<\/td><td>7075-T6 \ub300\ube44 \uc57d 30% \ub0ae\uc74c, \ub0b4\uc99d\ub825\uc774 \uc9c0\ubc30\uc801\uc778 \uacbd\uc6b0<\/td><\/tr><tr><td>\uc6a9\uc811\uc131<\/td><td>\uc735\ud569 \uc6a9\uc811\uc774 \uac00\ub2a5\ud55c \uba87 \uc548 \ub418\ub294 7xxx \ud569\uae08 \uc911 \ud558\ub098<\/td><td>\uc790\uccb4 \uc801\uaca9 \uc808\ucc28 \ud544\uc694; \uc77c\ubd80 \uc5f4\uc601\ud5a5\ubd80 \uc190\uc2e4\uc740 \ubd88\uac00\ud53c<\/td><\/tr><tr><td>\ub0b4\uc2dd\uc131<\/td><td>\uc544\ub178\ub2e4\uc774\uc9d5 \ub610\ub294 \ub3c4\uc7a5 \ud6c4 \uc801\ud569<\/td><td>\ubbf8\ubcf4\ud638 \uc2b5\uc724 \ub610\ub294 \ud574\uc591 \ud658\uacbd\uc5d0\ub294 \ube44\ud569\uae08 \uc0c1\ud0dc \ubd80\uc801\ud569<\/td><\/tr><tr><td>\uc5f4 \uc804\ub3c4\uc131<\/td><td>125\u2013155 W\/m\u00b7K; \uac15\ucca0\ubcf4\ub2e4 \ube60\ub978 \uae08\ud615 \uc0ac\uc774\ud074<\/td><td>\u2014<\/td><\/tr><tr><td>\uc0ac\uc6a9 \uc628\ub3c4<\/td><td>\uc57d 100\u2013120 \u00b0C\uae4c\uc9c0 \uc548\uc815<\/td><td>\uace0\uc628 \ud569\uae08\uc774 \uc544\ub2d8<\/td><\/tr><tr><td>\uac00\uc6a9\uc131<\/td><td>\ud50c\ub808\uc774\ud2b8 \ubc0f \ubc14 \ud615\ud0dc\uac00 \ud45c\uc900\uc774\uba70, \uc555\ucd9c \ud615\uc0c1\ub3c4 \uac00\ub2a5<\/td><td>6061\ubcf4\ub2e4 \uc7ac\uace0\uac00 \uc801\uc74c; \uc774\ub97c \uae30\ubc18\uc73c\ub85c \uc124\uacc4\ud558\uae30 \uc804\uc5d0 \ud655\uc778 \ud544\uc694<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Go\/No-Go<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\ub2e4\ub978 \uc18c\uc7ac\uc640 \ube44\uad50\ud558\uae30 \uc804\uc5d0 \uc774 \uc784\uacc4\uac12\uc744 \uc0ac\uc6a9\ud558\uc5ec 7021\uc774 \uc124\uacc4\uc5d0 \uc801\ud569\ud55c\uc9c0 \ud310\ub2e8\ud558\uc2ed\uc2dc\uc624.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7021-selection-boundaries.webp\" alt=\"7021-\uc120\uc815 \uacbd\uacc4\" class=\"wp-image-10696\" srcset=\"https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7021-selection-boundaries.webp 800w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7021-selection-boundaries-300x225.webp 300w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7021-selection-boundaries-768x576.webp 768w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7021-selection-boundaries-16x12.webp 16w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7021-selection-boundaries-600x450.webp 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>7021\uc744 \uc120\ud0dd\ud558\ub294 \uacbd\uc6b0:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uae4a\uac70\ub098 \ubd88\uade0\uc77c\ud55c \uc808\uc0ad \uc911\uc5d0\ub3c4 \ud3c9\ud0c4\ub3c4\ub97c \uc720\uc9c0\ud574\uc57c \ud558\ub294 \uae08\ud615, \uce90\ube44\ud2f0 \ud50c\ub808\uc774\ud2b8 \ub610\ub294 \ud234\ub9c1 \ud50c\ub808\uc774\ud2b8 \ubd80\ud488 \u2014 \uc7ac\ub8cc \uc81c\uac70\uac00 \uacfc\uc911\ud558\uac70\ub098 \ube44\ub300\uce6d\uc778 \uacbd\uc6b0 T651\uc744 \uc9c0\uc815\ud558\uc2ed\uc2dc\uc624.<\/li>\n\n\n\n<li>\uc6a9\uc811\uc774 \ud544\uc694\ud558\uace0 6061\uc774 \uc81c\uacf5\ud560 \uc218 \uc5c6\ub294 7xxx \uc218\uc900\uc758 \uac15\ub3c4\uac00 \ud544\uc694\ud55c \ubd80\ud488.<\/li>\n\n\n\n<li>125\u2013155 W\/m\u00b7K\uc758 \uc5f4\uc804\ub3c4\uc728\uc744 \ubc14\ud0d5\uc73c\ub85c \uac15\ucca0\ubcf4\ub2e4 \ube60\ub978 \uae08\ud615 \uc0ac\uc774\ud074\uc744 \uc6d0\ud558\ub294 \uacbd\uc6b0.<\/li>\n\n\n\n<li>\ubd80\ud488\ub2f9 \uac00\uacf5 \ube44\uc6a9\uc774 \ud56d\ubcf5\uac15\ub3c4\uc758 \ub9c8\uc9c0\ub9c9 \uba87 \ud37c\uc13c\ud2b8\ubcf4\ub2e4 \ub354 \uc911\uc694\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ub2e4\uc74c\uacfc \uac19\uc740 \uacbd\uc6b0 7021\uc744 \ud53c\ud558\uc2ed\uc2dc\uc624:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ucd5c\ub300 \uac15\ub3c4\uac00 \uc124\uacc4\ub97c \uacb0\uc815\ud558\uace0 \uc6a9\uc811\uc774 \uc804\ud600 \uc5c6\ub294 \uacbd\uc6b0 \u2014 <a href=\"https:\/\/premiumalu.com\/ko\/%ec%a0%9c%ed%92%88\/7075-%ec%95%8c%eb%a3%a8%eb%af%b8%eb%8a%84-%ed%95%a9%ea%b8%88\/\">7075-T6<\/a> \uc57d 30% \ub354 \ub192\uc740 \ud56d\ubcf5\uac15\ub3c4\ub97c \uc81c\uacf5\ud558\uc5ec \ubcfc\ud2b8 \uccb4\uacb0 \ubc0f \ub9ac\ubcb3 \uccb4\uacb0 \uac00\uacf5 \ubd80\ud488\uc5d0 \uc801\ud569\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li>276 MPa \ud56d\ubcf5\uac15\ub3c4\ub85c \ucda9\ubd84\ud55c \uacbd\uc6b0 \u2014 <a href=\"https:\/\/premiumalu.com\/ko\/%ec%a0%9c%ed%92%88\/6061-%ec%95%8c%eb%a3%a8%eb%af%b8%eb%8a%84-%ed%95%a9%ea%b8%88\/\">6061-T6<\/a> \ubb34\ub8cc \ub0b4\uc2dd\uc131, \uc6a9\uc774\ud55c \uc6a9\uc811\uc131 \ubc0f \ud6e8\uc52c \ub113\uc740 \uacf5\uae09 \uac00\ub2a5\uc131\uc744 \ud655\ubcf4\ud560 \uc218 \uc788\uc73c\uba70, \uc808\uc0ad \uae4a\uc774\uac00 \uc595\uc740 \uacf3\uc5d0\uc11c\ub294 \uc548\uc815\uc131\uc774 \ub35c \uc911\uc694\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\ubd80\ud488\uc774 \uc2b5\uae30, \ud574\uc591 \ub610\ub294 \ud654\ud559 \ud658\uacbd\uc5d0\uc11c \ubcf4\ud638 \uc5c6\uc774 \ub178\ucd9c\ub418\ub294 \uacbd\uc6b0 \u2014 \ub300\uc2e0 5xxx \ub610\ub294 6xxx \ud569\uae08\uc744 \uc120\ud0dd\ud558\uc2ed\uc2dc\uc624.<\/li>\n\n\n\n<li>\uc57d 120 \u00b0C \uc774\uc0c1\uc5d0\uc11c \uc5f0\uc18d \uc6b4\uc804\ub418\ub294 \uacbd\uc6b0, \uacfc\uc2dc\ud6a8\uac00 \ud15c\ud37c\ub97c \uce68\uc2dd\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\ubd80\ud488\uc774 \uc2dc\ud6a8 \ud6c4 \uc911\uc131\ud615\uc774 \ud544\uc694\ud55c \uacbd\uc6b0 \u2014 7021-T6\uc740 \uc131\ud615 \ud569\uae08\uc774 \uc544\ub2c8\ubbc0\ub85c O \ud15c\ud37c\uc5d0\uc11c \uc131\ud615\ud55c \ud6c4 \uc5f4\ucc98\ub9ac\ud558\uc2ed\uc2dc\uc624.<\/li>\n\n\n\n<li>\uac00\uacf5\ud560 \uac83\ub3c4 \uc5c6\uace0 \uc6a9\uc811\ud560 \uac83\ub3c4 \uc5c6\ub294 \uacbd\uc6b0 \u2014 \ud569\uae08\uc758 \uc7a5\uc810\uc774 \ubc1c\ud718\ub420 \uacf3\uc774 \uc5c6\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\uacb0\ub860<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">7021\uc740 7xxx \uacc4\uc5f4\uc5d0\uc11c \ud2b9\uc815\ud55c \uc704\uce58\ub97c \ucc28\uc9c0\ud569\ub2c8\ub2e4. 7075\uc758 \ud56d\ubcf5\uac15\ub3c4 \uc57d 30%\uc640 \uad6c\ub9ac \uc720\ub798 \ub0b4\uc2dd \uc131\ub2a5\uc744 \ud3ec\uae30\ud558\ub294 \ub300\uc2e0, \uae68\ub057\ud558\uac8c \uac00\uacf5\ub418\uace0, \uc911\uc808\uc0ad\uc5d0\uc11c\ub3c4 \ud615\uc0c1\uc744 \uc720\uc9c0\ud558\uba70, \uc6a9\uc811\uc774 \uac00\ub2a5\ud569\ub2c8\ub2e4 \u2014 \ub2e4\ub978 \uc5b4\ub5a4 7xxx \ud569\uae08\ub3c4 \ub3d9\uc77c\ud55c \ud328\ud0a4\uc9c0\ub85c \uc81c\uacf5\ud558\uc9c0 \ubabb\ud558\ub294 \uc870\ud569\uc785\ub2c8\ub2e4. \uc774\ub294 \uae08\ud615 \uce90\ube44\ud2f0, \ub9e4\ub2c8\ud3f4\ub4dc \ube14\ub85d \ub610\ub294 \ub300\ud615 \uac00\uacf5 \ud50c\ub808\uc774\ud2b8\uc5d0\uc11c \ube44\uc6a9\uc744 \uc9c0\ubd88\ud560 \uac00\uce58\uac00 \uc788\uc73c\uba70, \uc124\uacc4 \ud558\uc911\ub9cc\uc774 \uc720\uc77c\ud558\uac8c \uc911\uc694\ud55c \ubd80\ud488\uc5d0\uc11c\ub294 \uc9c0\ubd88\ud560 \uac00\uce58\uac00 \uc5c6\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub2f9\uc0ac\ub294 7021\uc744 T6 \ubc0f T651\ub85c \ud50c\ub808\uc774\ud2b8, \ubc14, \ud29c\ube0c \ubc0f \ube14\ub85d \ud615\ud0dc\ub85c \uacf5\uae09\ud558\uba70, \ubaa8\ub4e0 \uc8fc\ubb38\uc5d0 MTC\ub97c \ud3ec\ud568\ud569\ub2c8\ub2e4. \uc790\uccb4 CNC \uac00\uacf5, \uc6a9\uc811 \ubc0f \uc544\ub178\ub2e4\uc774\uc9d5\uc740 \uc774 \ub4f1\uae09\uc774 \uc77c\ubc18\uc801\uc73c\ub85c \uc9c0\uc815\ub418\ub294 \uac00\uacf5 \ubc0f \uc811\ud569 \ub2e8\uacc4\ub97c \ucee4\ubc84\ud558\uba70, \uc800MOQ \ub9de\ucda4 \uc0ac\uc774\uc988\ub294 \uc8fc\ubb38 \uc0dd\uc0b0\ub429\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub3c4\uba74, \ud615\uc0c1 \ubc0f \ud15c\ud37c\ub97c \ubcf4\ub0b4\uc8fc\uc2dc\uba74 \uc9c0\uc815\ud558\uc2e0 \ud45c\uc900\uc5d0 \ub300\ud574 \uacf5\uae09 \uac00\ub2a5\ud55c \uac83\uc744 \ud655\uc778\ud574 \ub4dc\ub9ac\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\uc790\uc8fc \ubb3b\ub294 \uc9c8\ubb38<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">7021 \ud50c\ub808\uc774\ud2b8\uc758 \ucd5c\uc18c \uc8fc\ubb38 \uc218\ub7c9\uc740 \uc5bc\ub9c8\uc774\uba70, \ub9ac\ub4dc \ud0c0\uc784\uc740 \uc5b4\ub5bb\uac8c \uacc4\ud68d\ud574\uc57c \ud569\ub2c8\uae4c?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ub3c4\uba74 \ub9de\ucda4 \uc0ac\uc774\uc988\ub294 \uc800MOQ \ub9de\ucda4 \uc0dd\uc0b0\uc73c\ub85c, \uc77c\ubc18\uc801\uc73c\ub85c \ud615\uc0c1, \ud15c\ud37c \ubc0f \uc218\ub7c9\uc5d0 \ub530\ub77c 10\u201360\uc77c\uc774 \uc18c\uc694\ub429\ub2c8\ub2e4. \ud45c\uc900 \ud50c\ub808\uc774\ud2b8 \ubc0f \ubc14 \uc0ac\uc774\uc988\ub294 \uc7ac\uace0\uc5d0\uc11c \ucd9c\ud558\ub429\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">7021 \uc8fc\ubb38 \uc2dc \uc5b4\ub5a4 \uc11c\ub958\uac00 \uc81c\uacf5\ub429\ub2c8\uae4c?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ud574\ub2f9 \ud788\ud2b8\uc758 \ud654\ud559 \uc131\ubd84 \ubc0f \uae30\uacc4\uc801 \uacb0\uacfc\ub97c \ubcf4\uace0\ud558\ub294 \ubc00 \ud14c\uc2a4\ud2b8 \uc778\uc99d\uc11c\uac00 \ubaa8\ub4e0 \ucd9c\ud558\uc5d0 \ud3ec\ud568\ub429\ub2c8\ub2e4. \ud504\ub85c\uc81d\ud2b8\uc5d0 \ub3c5\ub9bd\uc801 \uac80\uc99d\uc774 \ud544\uc694\ud55c \uacbd\uc6b0, \ucd94\uac00 \uc2dc\ud5d8 \ube44\uc6a9\uc73c\ub85c \uc694\uccad \uc2dc SGS \ubcf4\uace0\uc11c\ub97c \uc900\ube44\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">7021 \uae08\ud615 \ud50c\ub808\uc774\ud2b8\ub97c \uac00\uacf5\ud558\uc5ec \uc644\uc131 \ubd80\ud488\uc744 \uacf5\uae09\ud560 \uc218 \uc788\uc2b5\ub2c8\uae4c?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ub124 \u2014 \uce90\ube44\ud2f0 \ud50c\ub808\uc774\ud2b8, \ub9e4\ub2c8\ud3f4\ub4dc \ube14\ub85d \ubc0f \uce58\uacf5\uad6c \ud50c\ub808\uc774\ud2b8\ub294 \uc790\uccb4 \uac00\uacf5\ub418\ubbc0\ub85c, \uc7ac\ub8cc\uc640 \uac00\uacf5\uc774 \ud568\uaed8 \uacac\uc801\ub429\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uae30\uc874 \uae08\ud615 \uc124\uacc4\uc5d0\uc11c 7021\uc774 7075\ub97c \ub300\uccb4\ud560 \uc218 \uc788\uc2b5\ub2c8\uae4c?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uc124\uacc4\uac00 \uac15\ub3c4 \uc81c\ud55c\uc774 \uc544\ub2cc \uacbd\uc6b0\uc5d0\ub9cc \uac00\ub2a5\ud569\ub2c8\ub2e4. 7021\uc740 7075\uc758 \ud56d\ubcf5\uac15\ub3c4 \uc57d 30%\ub97c \ud3ec\uae30\ud558\ubbc0\ub85c, 7075 \ubcbd \ub450\uaed8\ub85c \uc124\uacc4\ub41c \uce90\ube44\ud2f0\ub294 \uc7ac\uac80\ud1a0\uac00 \ud544\uc694\ud569\ub2c8\ub2e4. \ucd5c\ub300 \uac15\ub3c4\ubcf4\ub2e4 \uac00\uacf5 \uc2dc\uac04, \ud3c9\ud0c4\ub3c4 \ubc0f \uc6a9\uc811\uc131\uc774 \uc120\ud0dd\uc744 \uc8fc\ub3c4\ud558\ub294 \uacbd\uc6b0, \uad50\uccb4\ub294 \uc77c\ubc18\uc801\uc73c\ub85c \uc774\uc775\uc774 \ub429\ub2c8\ub2e4.<\/p>","protected":false},"excerpt":{"rendered":"<p>What Is 7021 Aluminum? 7021 is a heat-treatable Al-Zn-Mg alloy of the 7xxx family, registered as EN AW-7021 (AlZn5.5Mg1.5) and as UNS A97021. It is the 7xxx grade to reach for when the part has to hold tolerance through heavy machining, or has to be welded and still reach a 7xxx strength class \u2014 two [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":10698,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"7021 Aluminum: The Ultimate Guide to Properties and Uses","_seopress_titles_desc":"A practical guide to 7021 aluminum: chemical composition, mechanical properties, T6\/T62\/T651 tempers, comparison with 7075 and 6061, and sourcing tips for aerospace and structural use.","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":"","footnotes":""},"categories":[179],"tags":[],"class_list":["post-8805","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-7000-series-aluminum"],"_links":{"self":[{"href":"https:\/\/premiumalu.com\/ko\/wp-json\/wp\/v2\/posts\/8805","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/premiumalu.com\/ko\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/premiumalu.com\/ko\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/premiumalu.com\/ko\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/premiumalu.com\/ko\/wp-json\/wp\/v2\/comments?post=8805"}],"version-history":[{"count":5,"href":"https:\/\/premiumalu.com\/ko\/wp-json\/wp\/v2\/posts\/8805\/revisions"}],"predecessor-version":[{"id":10715,"href":"https:\/\/premiumalu.com\/ko\/wp-json\/wp\/v2\/posts\/8805\/revisions\/10715"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/premiumalu.com\/ko\/wp-json\/wp\/v2\/media\/10698"}],"wp:attachment":[{"href":"https:\/\/premiumalu.com\/ko\/wp-json\/wp\/v2\/media?parent=8805"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/premiumalu.com\/ko\/wp-json\/wp\/v2\/categories?post=8805"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/premiumalu.com\/ko\/wp-json\/wp\/v2\/tags?post=8805"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}