{"id":10950,"date":"2024-10-02T02:01:00","date_gmt":"2024-10-01T18:01:00","guid":{"rendered":"https:\/\/app11147.cloudwayssites.com\/?p=10950"},"modified":"2025-02-17T19:15:36","modified_gmt":"2025-02-17T11:15:36","slug":"grade-302","status":"publish","type":"post","link":"https:\/\/steelprogroup.com\/vi\/stainless-steel\/grades\/grade-302\/","title":{"rendered":"Th\u00e9p kh\u00f4ng g\u1ec9 302: Th\u00e0nh ph\u1ea7n, T\u00ednh ch\u1ea5t, \u1ee8ng d\u1ee5ng, Quy tr\u00ecnh, So s\u00e1nh v\u00e0 Th\u00eam th\u00f4ng tin"},"content":{"rendered":"<p>Ch\u00fang t\u00f4i gi\u1edbi thi\u1ec7u chi ti\u1ebft v\u1ec1 th\u00e0nh ph\u1ea7n, \u0111\u1eb7c \u0111i\u1ec3m, ph\u01b0\u01a1ng ph\u00e1p ch\u1ebf bi\u1ebfn, \u01b0u v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 302 v\u00e0 gi\u00fap b\u1ea1n hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 c\u00e1c \u1ee9ng d\u1ee5ng c\u1ee7a n\u00f3 b\u1eb1ng c\u00e1ch so s\u00e1nh v\u1edbi c\u00e1c lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 301, 303, 304, 316 v\u00e0 18\/8. Ch\u00fang t\u00f4i c\u0169ng cung c\u1ea5p c\u00e2u tr\u1ea3 l\u1eddi cho c\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 th\u00e9p kh\u00f4ng g\u1ec9 302 nh\u01b0 an to\u00e0n th\u1ef1c ph\u1ea9m, t\u1eeb t\u00ednh v\u00e0 hi\u1ec7u su\u1ea5t ch\u1ed1ng g\u1ec9.<\/p><h2 class=\"wp-block-heading\">Th\u00e9p kh\u00f4ng g\u1ec9 302 l\u00e0 g\u00ec?<\/h2><p>Th\u00e9p kh\u00f4ng g\u1ec9 AISI 302 l\u00e0 th\u00e9p kh\u00f4ng g\u1ec9 austenit trong d\u00f2ng 300, \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi th\u00e0nh ph\u1ea7n crom-niken (18%Cr, 8%Ni). 302 l\u00e0 phi\u00ean b\u1ea3n carbon cao h\u01a1n m\u1ed9t ch\u00fat c\u1ee7a 304, th\u01b0\u1eddng \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y \u1edf d\u1ea1ng d\u1ea3i v\u00e0 d\u1ea1ng d\u00e2y. N\u00f3 c\u1ef1c k\u1ef3 b\u1ec1n, ch\u1ed1ng \u0103n m\u00f2n v\u00e0 d\u1ec5 d\u00e0ng \u0111\u1ecbnh h\u00ecnh v\u00e0 ch\u1ebf t\u1ea1o, l\u00e0m cho n\u00f3 tr\u1edf n\u00ean l\u00fd t\u01b0\u1edfng cho nhi\u1ec1u \u1ee9ng d\u1ee5ng kh\u00e1c nhau.<\/p><h3 class=\"wp-block-heading\">C\u00e1c c\u1ea5p \u0111\u1ed9 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 302<\/h3><ul class=\"wp-block-list\"><li>UNS: S30200<\/li>\n\n<li>Ti\u1ebfng Vi\u1ec7t: 1.4310<\/li>\n\n<li>Ti\u00eau chu\u1ea9n: X10CrNi18-8<\/li>\n\n<li>Ti\u00eau chu\u1ea9n: SUS 302<\/li><\/ul><h3 class=\"wp-block-heading\">Ti\u00eau chu\u1ea9n ASTM cho th\u00e9p kh\u00f4ng g\u1ec9 302 l\u00e0 g\u00ec?<\/h3><ul class=\"wp-block-list\"><li>Ti\u00eau chu\u1ea9n ASTMA240<\/li>\n\n<li>Ti\u00eau chu\u1ea9n ASTMA276<\/li>\n\n<li>Ti\u00eau chu\u1ea9n ASTMA580<\/li>\n\n<li>Ti\u00eau chu\u1ea9n ASTMA313<\/li><\/ul><h2 class=\"wp-block-heading\">Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 302<\/h2><p>Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 302 \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c x\u00e1c \u0111\u1ecbnh kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n, \u0111\u1ed9 b\u1ec1n v\u00e0 t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a n\u00f3. Th\u00e0nh ph\u1ea7n c\u1ee7a n\u00f3 r\u1ea5t gi\u1ed1ng v\u1edbi th\u00e9p kh\u00f4ng g\u1ec9 304 nh\u01b0ng c\u00f3 h\u00e0m l\u01b0\u1ee3ng carbon cao h\u01a1n m\u1ed9t ch\u00fat, gi\u00fap t\u0103ng th\u00eam \u0111\u1ed9 b\u1ec1n.<\/p><figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Y\u1ebfu t\u1ed1<\/td><td>Ph\u1ea1m vi th\u00e0nh ph\u1ea7n<\/td><\/tr><tr><td>Cacbon (C)<\/td><td>\u2264 0,15%<\/td><\/tr><tr><td>Mangan (Mn)<\/td><td>\u2264 2,00%<\/td><\/tr><tr><td>Silic (Si)<\/td><td>\u2264 1,00%<\/td><\/tr><tr><td>Crom (Cr)<\/td><td>17.0% &#8211; 19.0%<\/td><\/tr><tr><td>Niken (Ni)<\/td><td>8.0% &#8211; 10.0%<\/td><\/tr><tr><td>Ph\u1ed1t pho (P)<\/td><td>\u2264 0,045%<\/td><\/tr><tr><td>L\u01b0u hu\u1ef3nh (S)<\/td><td>\u2264 0,030%<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">T\u00ednh ch\u1ea5t c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 302<\/h2><h3 class=\"wp-block-heading\">C\u00e1c t\u00ednh n\u0103ng ch\u00ednh<\/h3><p>Th\u00e9p kh\u00f4ng g\u1ec9 302 \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi nh\u1eefng \u0111\u1eb7c t\u00ednh sau:<\/p><ul class=\"wp-block-list\"><li>Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n: V\u1edbi h\u00e0m l\u01b0\u1ee3ng crom cao, 302 c\u00f3 kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 t\u1ed1t ch\u1ed1ng g\u1ec9 v\u00e0 \u0103n m\u00f2n trong nhi\u1ec1u m\u00f4i tr\u01b0\u1eddng kh\u00e1c nhau, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong \u0111i\u1ec1u ki\u1ec7n \u0103n m\u00f2n t\u1eeb nh\u1eb9 \u0111\u1ebfn trung b\u00ecnh.<\/li><\/ul><ul class=\"wp-block-list\"><li>\u0110\u1ed9 b\u1ec1n cao: H\u00e0m l\u01b0\u1ee3ng carbon cao h\u01a1n trong h\u1ee3p kim gi\u00fap t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 b\u1ec1n k\u00e9o so v\u1edbi th\u00e9p kh\u00f4ng g\u1ec9 304.<\/li><\/ul><ul class=\"wp-block-list\"><li>T\u00ednh ch\u1ea5t t\u1eeb t\u00ednh: Th\u00e9p kh\u00f4ng g\u1ec9 302 kh\u00f4ng c\u00f3 t\u1eeb t\u00ednh khi \u1ee7, nh\u01b0ng s\u1ebd c\u00f3 t\u1eeb t\u00ednh nh\u1eb9 sau qu\u00e1 tr\u00ecnh l\u00e0m ngu\u1ed9i.<\/li><\/ul><ul class=\"wp-block-list\"><li>Kh\u1ea3 n\u0103ng \u0111\u1ecbnh h\u00ecnh tuy\u1ec7t v\u1eddi: D\u1ec5 gia c\u00f4ng, \u0111\u1ecbnh h\u00ecnh v\u00e0 ch\u1ebf t\u1ea1o, ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng ph\u1ee9c t\u1ea1p \u0111\u00f2i h\u1ecfi ph\u1ea3i \u0111\u1ecbnh h\u00ecnh chi ti\u1ebft.<\/li><\/ul><h3 class=\"wp-block-heading\">T\u00ednh ch\u1ea5t v\u1eadt l\u00fd<\/h3><figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>T\u00e0i s\u1ea3n<\/strong><\/td><td><strong>H\u1ec7 m\u00e9t<\/strong><\/td><td><strong>\u0110\u1ebf qu\u1ed1c<\/strong><\/td><\/tr><tr><td>T\u1ec9 tr\u1ecdng<\/td><td>7,9g\/cm\u00b3<\/td><td>0,284 lb\/in\u00b3<\/td><\/tr><tr><td>\u0110i\u1ec3m n\u00f3ng ch\u1ea3y<\/td><td>1425\u00b0C \u2013 1450\u00b0C<\/td><td>2550\u00b0F \u2013 2590\u00b0F<\/td><\/tr><tr><td>\u0110\u1ed9 d\u1eabn nhi\u1ec7t<\/td><td>16,3 W\/mK<\/td><td>9,4 BTU\/gi\u1edd\/ft\u00b2\/\u00b0F<\/td><\/tr><tr><td>\u0110i\u1ec7n tr\u1edf su\u1ea5t<\/td><td>720 n\u03a9\u00b7m<\/td><td>28,3 \u00b5\u03a9\u00b7trong<\/td><\/tr><tr><td>Nhi\u1ec7t dung ri\u00eang<\/td><td>500 J\/kg\u00b7K<\/td><td>0,12 BTU\/lb\u00b0F<\/td><\/tr><tr><td>H\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t (20-100\u00b0C)<\/td><td>17,6 \u00b5m\/m\u00b7\u00b0C<\/td><td>9,8 \u00b5in\/in\u00b7\u00b0F<\/td><\/tr><tr><td>H\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t (20-500\u00b0C)<\/td><td>17,2 \u00b5m\/m\u00b7\u00b0C<\/td><td>9,6 \u00b5in\/in\u00b7\u00b0F<\/td><\/tr><tr><td>\u0110\u1ed9 t\u1eeb th\u1ea9m (T\u01b0\u01a1ng \u0111\u1ed1i)<\/td><td>\u22641,02<\/td><td>\u22641,02<\/td><\/tr><\/tbody><\/table><\/figure><h3 class=\"wp-block-heading\">T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc<\/h3><figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>T\u00e0i s\u1ea3n<\/strong><\/td><td><strong>H\u1ec7 m\u00e9t<\/strong><\/td><td><strong>\u0110\u1ebf qu\u1ed1c<\/strong><\/td><\/tr><tr><td>\u0110\u1ed9 b\u1ec1n k\u00e9o (T\u1ed1i \u0111a)<\/td><td>620MPa<\/td><td>89.900 psi<\/td><\/tr><tr><td>Gi\u1edbi h\u1ea1n ch\u1ea3y (\u0110\u1ed9 l\u1ec7ch 0,2%)<\/td><td>275MPa<\/td><td>39.900 psi<\/td><\/tr><tr><td>\u0110\u1ed9 gi\u00e3n d\u00e0i khi \u0111\u1ee9t (50mm)<\/td><td>40 &#8211; 60%<\/td><td>40 &#8211; 60%<\/td><\/tr><tr><td>\u0110\u1ed9 c\u1ee9ng (Rockwell B)<\/td><td>T\u1ed1i \u0111a 92<\/td><td>T\u1ed1i \u0111a 92<\/td><\/tr><tr><td>\u0110\u1ed9 c\u1ee9ng (Brinell\/Vickers)<\/td><td>147<\/td><td>147<\/td><\/tr><tr><td>T\u1ef7 s\u1ed1 Poisson<\/td><td>0,27 \u2013 0,30<\/td><td>0,27 \u2013 0,30<\/td><\/tr><tr><td>M\u00f4 \u0111un \u0111\u00e0n h\u1ed3i (L\u1ef1c c\u0103ng)<\/td><td>193 GPa<\/td><td>28.000 kil\u00f4gam<\/td><\/tr><tr><td>M\u00f4 \u0111un \u0111\u00e0n h\u1ed3i (Xo\u1eafn)<\/td><td>77 GPa<\/td><td>11.200 kil\u00f4gam<\/td><\/tr><tr><td>M\u00f4 \u0111un c\u1eaft<\/td><td>77 GPa<\/td><td>11.000 kil\u00f4gam<\/td><\/tr><tr><td>S\u1ee9c m\u1ea1nh c\u1eaft<\/td><td>350MPa<\/td><td>50.763 psi<\/td><\/tr><tr><td>\u0110\u1ed9 b\u1ec1n m\u1ecfi (10^7 chu k\u1ef3)<\/td><td>240MPa<\/td><td>34.800 psi<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">C\u00e1c d\u1ea1ng th\u00e9p kh\u00f4ng g\u1ec9 302<\/h2><p>Th\u00e9p kh\u00f4ng g\u1ec9 302 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p nh\u01b0 ch\u1ebf bi\u1ebfn th\u1ef1c ph\u1ea9m, x\u00e2y d\u1ef1ng, thi\u1ebft b\u1ecb y t\u1ebf, m\u00e1y m\u00f3c v\u00e0 \u00f4 t\u00f4 do kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n, \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng \u0111\u1ecbnh h\u00ecnh tuy\u1ec7t v\u1eddi, \u0111\u00e1p \u1ee9ng c\u00e1c nhu c\u1ea7u \u0111a d\u1ea1ng t\u1eeb \u1ed1c v\u00edt \u0111\u1ebfn c\u00e1c b\u1ed9 ph\u1eadn ch\u00ednh x\u00e1c.<\/p><p>Th\u00e9p kh\u00f4ng g\u1ec9 302 c\u1ee7a ch\u00fang t\u00f4i c\u00f3 nhi\u1ec1u d\u1ea1ng kh\u00e1c nhau \u0111\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c nhau, bao g\u1ed3m:<\/p><ul class=\"wp-block-list\"><li>L\u00f2 xo, bi, v\u00f2ng \u0111\u1ec7m, d\u1ea3i th\u00e9p kh\u00f4ng g\u1ec9 302.<\/li><\/ul><ul class=\"wp-block-list\"><li><a href=\"https:\/\/steelprogroup.com\/vi\/stainless-steel\/302-wire\/\">D\u00e2y th\u00e9p kh\u00f4ng g\u1ec9 302<\/a>, l\u00e1, t\u1ea5m v\u00e0 t\u1edd.<\/li><\/ul><ul class=\"wp-block-list\"><li>Thanh, que th\u00e9p kh\u00f4ng g\u1ec9 302.<\/li><\/ul><ul class=\"wp-block-list\"><li>\u1ed0ng th\u00e9p kh\u00f4ng g\u1ec9 302 li\u1ec1n m\u1ea1ch, \u1ed1ng h\u00e0n, \u1ed1ng.<\/li><\/ul><h2 class=\"wp-block-heading\">\u1ee8ng d\u1ee5ng c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 302<\/h2><p>T\u00ednh linh ho\u1ea1t c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 302 cho ph\u00e9p n\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p kh\u00e1c nhau.&nbsp;<\/p><p><strong>Ng\u00e0nh th\u1ef1c ph\u1ea9m v\u00e0 \u0111\u1ed3 u\u1ed1ng:<\/strong> Nh\u1edd kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u00e0 \u0111\u1eb7c t\u00ednh v\u1ec7 sinh, th\u00e9p kh\u00f4ng g\u1ec9 302 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong s\u1ea3n xu\u1ea5t c\u00e1c thi\u1ebft b\u1ecb nh\u00e0 b\u1ebfp, m\u00e1y m\u00f3c ch\u1ebf bi\u1ebfn th\u1ef1c ph\u1ea9m c\u0169ng nh\u01b0 c\u00e1c th\u00f9ng ch\u1ee9a \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 l\u01b0u tr\u1eef v\u00e0 v\u1eadn chuy\u1ec3n th\u1ef1c ph\u1ea9m v\u00e0 \u0111\u1ed3 u\u1ed1ng.<\/p><p><strong>\u00d4 t\u00f4 v\u00e0 H\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5:<\/strong> \u0110\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng \u0111\u1ecbnh h\u00ecnh c\u1ee7a h\u1ee3p kim l\u00e0m cho n\u00f3 tr\u1edf n\u00ean l\u00fd t\u01b0\u1edfng cho c\u00e1c th\u00e0nh ph\u1ea7n nh\u01b0 l\u00f2 xo, ch\u1ed1t v\u00e0 c\u00e1c b\u1ed9 ph\u1eadn k\u1ef9 thu\u1eadt kh\u00e1c.<\/p><p><strong>X\u1eed l\u00fd h\u00f3a h\u1ecdc:<\/strong> Kh\u1ea3 n\u0103ng ch\u1ed1ng axit nh\u1eb9 v\u00e0 ch\u1ed1ng \u0103n m\u00f2n cho ph\u00e9p s\u1eed d\u1ee5ng trong s\u1ea3n xu\u1ea5t b\u1ed3n ch\u1ee9a, th\u00f9ng ch\u1ee9a v\u00e0 h\u1ec7 th\u1ed1ng \u0111\u01b0\u1eddng \u1ed1ng \u0111\u1ec3 l\u01b0u tr\u1eef v\u00e0 v\u1eadn chuy\u1ec3n h\u00f3a ch\u1ea5t.<\/p><p><strong>Thi\u1ebft b\u1ecb y t\u1ebf: <\/strong>Do \u0111\u1eb7c t\u00ednh kh\u00f4ng ph\u1ea3n \u1ee9ng v\u00e0 ch\u1ed1ng \u0103n m\u00f2n, th\u00e9p kh\u00f4ng g\u1ec9 302 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c d\u1ee5ng c\u1ee5 ph\u1eabu thu\u1eadt v\u00e0 c\u00e1c thi\u1ebft b\u1ecb y t\u1ebf kh\u00e1c.<\/p><p><strong>Thi\u1ebft b\u1ecb gia d\u1ee5ng:<\/strong> Th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u00e1y r\u1eeda ch\u00e9n, m\u00e1y gi\u1eb7t v\u00e0 t\u1ee7 l\u1ea1nh, th\u00e9p kh\u00f4ng g\u1ec9 302 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng v\u00ec \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n.<\/p><h2 class=\"wp-block-heading\">\u01afu v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 302<\/h2><p>Gi\u1ed1ng nh\u01b0 b\u1ea5t k\u1ef3 v\u1eadt li\u1ec7u n\u00e0o, th\u00e9p kh\u00f4ng g\u1ec9 302 c\u0169ng c\u00f3 \u01b0u \u0111i\u1ec3m v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m ri\u00eang, t\u00f9y thu\u1ed9c v\u00e0o tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u1ee5 th\u1ec3.<\/p><h3 class=\"wp-block-heading\">Thu\u1eadn l\u1ee3i<\/h3><ol class=\"wp-block-list\"><li>\u0110\u1ed9 b\u1ec1n: Th\u00e9p kh\u00f4ng g\u1ec9 302 c\u00f3 \u0111\u1ed9 b\u1ec1n v\u00e0 s\u1ee9c m\u1ea1nh tuy\u1ec7t v\u1eddi trong c\u1ea3 \u1ee9ng d\u1ee5ng th\u00f4ng th\u01b0\u1eddng v\u00e0 \u1ee9ng d\u1ee5ng ch\u1ecbu \u1ee9ng su\u1ea5t cao.<\/li>\n\n<li>Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n: Ho\u1ea1t \u0111\u1ed9ng t\u1ed1t trong m\u00f4i tr\u01b0\u1eddng c\u00f3 m\u1ee9c \u0103n m\u00f2n t\u1eeb nh\u1eb9 \u0111\u1ebfn trung b\u00ecnh, do \u0111\u00f3 ph\u00f9 h\u1ee3p \u0111\u1ec3 s\u1eed d\u1ee5ng trong ng\u00e0nh th\u1ef1c ph\u1ea9m, y t\u1ebf v\u00e0 h\u00f3a ch\u1ea5t.<\/li>\n\n<li>Ti\u1ebft ki\u1ec7m chi ph\u00ed: So v\u1edbi c\u00e1c lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 cao c\u1ea5p h\u01a1n, th\u00e9p 302 c\u00f3 hi\u1ec7u su\u1ea5t t\u1ed1t v\u1edbi chi ph\u00ed th\u1ea5p h\u01a1n.<\/li>\n\n<li>\u0110\u1ed9 b\u1ec1n k\u00e9o cao: H\u00e0m l\u01b0\u1ee3ng carbon cao h\u01a1n mang l\u1ea1i cho th\u00e9p n\u00e0y \u0111\u1ed9 b\u1ec1n cao h\u01a1n th\u00e9p kh\u00f4ng g\u1ec9 304.<\/li>\n\n<li>Kh\u1ea3 n\u0103ng \u0111\u1ecbnh h\u00ecnh: D\u1ec5 \u0111\u00fac, h\u00e0n v\u00e0 ch\u1ebf t\u1ea1o \u0111\u1ec3 thi\u1ebft k\u1ebf v\u00e0 s\u1ea3n xu\u1ea5t linh ho\u1ea1t.<\/li><\/ol><h3 class=\"wp-block-heading\">Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/h3><ol class=\"wp-block-list\"><li>Kh\u00f4ng ch\u1ed1ng \u0103n m\u00f2n b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9 316: Trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t h\u01a1n, ch\u1eb3ng h\u1ea1n nh\u01b0 m\u00f4i tr\u01b0\u1eddng c\u00f3 h\u00e0m l\u01b0\u1ee3ng clorua cao, th\u00e9p kh\u00f4ng g\u1ec9 302 c\u00f3 th\u1ec3 kh\u00f4ng c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t nh\u01b0 th\u00e9p kh\u00f4ng g\u1ec9 316.<\/li>\n\n<li>T\u00ednh ch\u1ea5t t\u1eeb t\u00ednh: Th\u00e9p kh\u00f4ng g\u1ec9 302 c\u00f3 th\u1ec3 b\u1ecb nhi\u1ec5m t\u1eeb khi gia c\u00f4ng ngu\u1ed9i, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 kh\u00f4ng mong mu\u1ed1n trong m\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng nh\u1ea5t \u0111\u1ecbnh.<\/li>\n\n<li>Th\u00e1ch th\u1ee9c khi h\u00e0n: \u1ee6 sau khi h\u00e0n th\u01b0\u1eddng l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 ph\u1ee5c h\u1ed3i kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n sau khi h\u00e0n, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 l\u00e0m t\u0103ng th\u1eddi gian v\u00e0 chi ph\u00ed s\u1ea3n xu\u1ea5t.<\/li><\/ol><h2 class=\"wp-block-heading\">Ph\u01b0\u01a1ng ph\u00e1p ch\u1ebf bi\u1ebfn th\u00e9p kh\u00f4ng g\u1ec9 302<\/h2><p>Th\u00e9p kh\u00f4ng g\u1ec9 302 c\u00f3 kh\u1ea3 n\u0103ng \u0111\u1ecbnh h\u00ecnh v\u00e0 gia c\u00f4ng tuy\u1ec7t v\u1eddi v\u00e0 d\u1ec5 gia c\u00f4ng. Th\u00e9p kh\u00f4ng g\u1ec9 302 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c gia c\u00f4ng b\u1eb1ng nhi\u1ec1u ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c nhau cho nhi\u1ec1u \u1ee9ng d\u1ee5ng kh\u00e1c nhau.<\/p><h3 class=\"wp-block-heading\">Ph\u01b0\u01a1ng ph\u00e1p ch\u1ebf bi\u1ebfn th\u00e9p kh\u00f4ng g\u1ec9 302<\/h3><p>Th\u00e9p kh\u00f4ng g\u1ec9 302 l\u00e0 h\u1ee3p kim crom-niken austenit c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n tuy\u1ec7t v\u1eddi, \u0111\u1ed9 b\u1ec1n cao v\u00e0 \u0111\u1ed9 d\u1ebbo t\u1ed1t. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p v\u00e0 k\u1ef9 thu\u1eadt gia c\u00f4ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho th\u00e9p kh\u00f4ng g\u1ec9 302:<\/p><h3 class=\"wp-block-heading\"><strong>H\u00ecnh th\u00e0nh<\/strong><\/h3><ul class=\"wp-block-list\"><li><strong>T\u1ea1o h\u00ecnh l\u1ea1nh<\/strong>: Th\u00e9p kh\u00f4ng g\u1ec9 302 c\u00f3 \u0111\u1ed9 d\u1ebbo cao, l\u00fd t\u01b0\u1edfng cho c\u00e1c ho\u1ea1t \u0111\u1ed9ng t\u1ea1o h\u00ecnh ngu\u1ed9i nh\u01b0 u\u1ed1n, k\u00e9o v\u00e0 t\u1ea1o h\u00ecnh th\u00e0nh c\u00e1c h\u00ecnh d\u1ea1ng ph\u1ee9c t\u1ea1p. T\u1ea1o h\u00ecnh ngu\u1ed9i l\u00e0m t\u0103ng \u0111\u1ed9 b\u1ec1n c\u1ee7a v\u1eadt li\u1ec7u do qu\u00e1 tr\u00ecnh l\u00e0m c\u1ee9ng, nh\u01b0ng \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 c\u1ea7n \u1ee7 th\u00eam \u0111\u1ec3 kh\u00f4i ph\u1ee5c \u0111\u1ed9 d\u1ebbo.<\/li>\n\n<li><strong>V\u1ebd s\u00e2u<\/strong>:Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ea1o ra c\u00e1c h\u00ecnh d\u1ea1ng nh\u01b0 c\u1ed1c v\u00e0 v\u1ecf s\u00f2, t\u1eadn d\u1ee5ng kh\u1ea3 n\u0103ng \u0111\u1ecbnh h\u00ecnh c\u1ee7a v\u1eadt li\u1ec7u.<\/li><\/ul><h3 class=\"wp-block-heading\"><strong>H\u00e0n<\/strong><\/h3><ul class=\"wp-block-list\"><li><strong>Ph\u01b0\u01a1ng ph\u00e1p h\u00e0n th\u00f4ng d\u1ee5ng<\/strong>: Th\u00e9p kh\u00f4ng g\u1ec9 302 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c h\u00e0n b\u1eb1ng h\u1ea7u h\u1ebft c\u00e1c ph\u01b0\u01a1ng ph\u00e1p h\u00e0n ti\u00eau chu\u1ea9n, bao g\u1ed3m <strong>TIG (Kh\u00ed tr\u01a1 vonfram), MIG (Kh\u00ed tr\u01a1 kim lo\u1ea1i) v\u00e0 h\u00e0n \u0111i\u1ec7n tr\u1edf<\/strong>.<\/li>\n\n<li><strong>C\u00e1c bi\u1ec7n ph\u00e1p ph\u00f2ng ng\u1eeba<\/strong>: Khi h\u00e0n th\u00e9p kh\u00f4ng g\u1ec9 302, c\u00f3 th\u1ec3 c\u1ea7n \u1ee7 sau khi h\u00e0n \u0111\u1ec3 duy tr\u00ec \u0111\u1eb7c t\u00ednh ch\u1ed1ng \u0103n m\u00f2n c\u1ee7a n\u00f3. S\u1eed d\u1ee5ng \u0111\u1ea7u v\u00e0o nhi\u1ec7t th\u1ea5p v\u00e0 v\u1eadt li\u1ec7u \u0111\u1ed9n, ch\u1eb3ng h\u1ea1n nh\u01b0 th\u00e9p kh\u00f4ng g\u1ec9 308L ho\u1eb7c 309L, c\u00f3 th\u1ec3 gi\u1ea3m nguy c\u01a1 k\u1ebft t\u1ee7a cacbua v\u00e0 \u0111\u1ea3m b\u1ea3o m\u1ed1i h\u00e0n ch\u1eafc ch\u1eafn.<\/li>\n\n<li><strong>H\u00e0n \u0111i\u1ec3m v\u00e0 h\u00e0n \u0111\u01b0\u1eddng may<\/strong>: Th\u00edch h\u1ee3p cho c\u00e1c ph\u1ea7n m\u1ecfng c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 302 trong c\u00e1c \u1ee9ng d\u1ee5ng y\u00eau c\u1ea7u m\u1ed1i n\u1ed1i ch\u1ea5t l\u01b0\u1ee3ng cao.<\/li><\/ul><h3 class=\"wp-block-heading\"><strong>C\u1eaft<\/strong><\/h3><ul class=\"wp-block-list\"><li><strong>C\u1eaft Laser<\/strong>:\u0110\u1ed9 ch\u00ednh x\u00e1c v\u00e0 n\u0103ng l\u01b0\u1ee3ng cao c\u1ee7a c\u00f4ng ngh\u1ec7 c\u1eaft laser cho ph\u00e9p c\u1eaft s\u1ea1ch v\u00e0 ph\u1ee9c t\u1ea1p, \u0111\u1eb7c bi\u1ec7t l\u00e0 c\u00e1c ph\u1ea7n m\u1ecfng c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 302.<\/li>\n\n<li><strong>C\u1eaft Plasma<\/strong>:C\u00f3 th\u1ec3 s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p c\u1eaft plasma \u0111\u1ec3 c\u1eaft c\u00e1c ph\u1ea7n d\u00e0y h\u01a1n, mang l\u1ea1i ph\u01b0\u01a1ng ph\u00e1p c\u1eaft nhanh v\u00e0 hi\u1ec7u qu\u1ea3 nh\u01b0ng \u0111\u1ed9 ch\u00ednh x\u00e1c k\u00e9m h\u01a1n m\u1ed9t ch\u00fat so v\u1edbi ph\u01b0\u01a1ng ph\u00e1p c\u1eaft laser.<\/li>\n\n<li><strong>C\u1eaft tia n\u01b0\u1edbc<\/strong>:Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y cung c\u1ea5p quy tr\u00ecnh c\u1eaft ngu\u1ed9i, ng\u0103n ng\u1eeba v\u00f9ng \u1ea3nh h\u01b0\u1edfng nhi\u1ec7t (HAZ) v\u00e0 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh v\u1ec1 k\u00edch th\u01b0\u1edbc, \u0111\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi v\u1eadt li\u1ec7u d\u00e0y h\u01a1n.<\/li>\n\n<li><strong>C\u1eaft c\u01a1 h\u1ecdc (C\u1eaft x\u00e9n)<\/strong>:C\u00e1c ph\u01b0\u01a1ng ph\u00e1p c\u01a1 h\u1ecdc nh\u01b0 c\u1eaft c\u0169ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng, m\u1eb7c d\u00f9 qu\u00e1 tr\u00ecnh l\u00e0m c\u1ee9ng c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 \u0111\u00e1ng quan t\u00e2m.<\/li><\/ul><h3 class=\"wp-block-heading\"><strong>L\u00e0m vi\u1ec7c n\u00f3ng<\/strong><\/h3><p>C\u00e1c quy tr\u00ecnh gia c\u00f4ng n\u00f3ng ph\u00f9 h\u1ee3p v\u1edbi th\u00e9p kh\u00f4ng g\u1ec9 302 bao g\u1ed3m:<\/p><ul class=\"wp-block-list\"><li><strong>R\u00e8n<\/strong>: R\u00e8n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf nhi\u1ec7t \u0111\u1ed9 t\u1eeb <strong>1150\u00b0C v\u00e0 1260\u00b0C (2100\u00b0F \u0111\u1ebfn 2300\u00b0F)<\/strong>. Sau khi r\u00e8n, c\u1ea7n ph\u1ea3i \u1ee7 th\u00e9p \u0111\u1ec3 ph\u1ee5c h\u1ed3i c\u1ea5u tr\u00fac v\u00e0 ng\u0103n ng\u1eeba \u1ee9ng su\u1ea5t b\u00ean trong.<\/li>\n\n<li><strong>C\u00e1n n\u00f3ng<\/strong>:\u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u1ecbnh h\u00ecnh v\u1eadt li\u1ec7u, c\u00e1n n\u00f3ng gi\u00fap tinh ch\u1ec9nh c\u1ea5u tr\u00fac h\u1ea1t v\u00e0 c\u1ea3i thi\u1ec7n c\u00e1c t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a v\u1eadt li\u1ec7u.<\/li>\n\n<li><strong>Phun ra<\/strong>: C\u00f3 th\u1ec3 \u00e1p d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p \u0111\u00f9n n\u00f3ng \u0111\u1ec3 t\u1ea1o ra c\u00e1c c\u1ea5u h\u00ecnh ph\u1ee9c t\u1ea1p. Nhi\u1ec7t \u0111\u1ed9 cao \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng \u0111\u1ecbnh h\u00ecnh t\u1ed1t \u0111\u1ed3ng th\u1eddi gi\u1ea3m \u0111\u1ed9 c\u1ee9ng do \u1ee9ng su\u1ea5t.<\/li><\/ul><h3 class=\"wp-block-heading\"><strong>L\u00e0m vi\u1ec7c l\u1ea1nh<\/strong><\/h3><ul class=\"wp-block-list\"><li><strong>C\u00e1n ngu\u1ed9i<\/strong>: Th\u00e9p kh\u00f4ng g\u1ec9 302 th\u01b0\u1eddng \u0111\u01b0\u1ee3c c\u00e1n ngu\u1ed9i \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc v\u00e0 t\u1ea1o ra c\u00e1c t\u1ea5m m\u1ecfng h\u01a1n, ch\u1eafc h\u01a1n. C\u00e1n ngu\u1ed9i l\u00e0m t\u0103ng \u0111\u1ed9 b\u1ec1n th\u00f4ng qua qu\u00e1 tr\u00ecnh t\u00f4i c\u1ee9ng do \u1ee9ng su\u1ea5t nh\u01b0ng l\u00e0m gi\u1ea3m \u0111\u1ed9 d\u1ebbo.<\/li>\n\n<li><strong>V\u1ebd l\u1ea1nh<\/strong>:\u0110\u1ed1i v\u1edbi c\u00e1c ph\u1ea7n d\u00e2y v\u00e0 thanh nh\u1ecf, k\u00e9o ngu\u1ed9i \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u00edch th\u01b0\u1edbc ch\u00ednh x\u00e1c v\u00e0 c\u1ea3i thi\u1ec7n b\u1ec1 m\u1eb7t ho\u00e0n thi\u1ec7n.<\/li>\n\n<li><strong>U\u1ed1n l\u1ea1nh<\/strong>:Quy tr\u00ecnh n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng y\u00eau c\u1ea7u u\u1ed1n cong ch\u1eb7t, trong \u0111\u00f3 t\u00ednh d\u1ebbo c\u1ee7a 302 cho ph\u00e9p t\u1ea1o ra c\u00e1c g\u00f3c s\u1eafc n\u00e9t, ch\u00ednh x\u00e1c.<\/li><\/ul><h3 class=\"wp-block-heading\"><strong>X\u1eed l\u00fd nhi\u1ec7t<\/strong><\/h3><ul class=\"wp-block-list\"><li><strong>\u1ee6<\/strong>: \u1ee6 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u0111\u1ec3 kh\u00f4i ph\u1ee5c \u0111\u1ed9 d\u1ebbo sau khi gia c\u00f4ng ngu\u1ed9i. Nhi\u1ec7t \u0111\u1ed9 \u1ee7 th\u00f4ng th\u01b0\u1eddng cho th\u00e9p kh\u00f4ng g\u1ec9 302 l\u00e0 gi\u1eefa <strong>1010\u00b0C v\u00e0 1120\u00b0C (1850\u00b0F \u0111\u1ebfn 2040\u00b0F)<\/strong> sau \u0111\u00f3 l\u00e0m ngu\u1ed9i nhanh \u0111\u1ec3 tr\u00e1nh k\u1ebft t\u1ee7a cacbua.<\/li>\n\n<li><strong>Gi\u1ea3m c\u0103ng th\u1eb3ng<\/strong>: C\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n \u1ee7 gi\u1ea3m \u1ee9ng su\u1ea5t \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p h\u01a1n (kho\u1ea3ng 370\u00b0C \u0111\u1ebfn 480\u00b0C) \u0111\u1ec3 gi\u1ea3m \u1ee9ng su\u1ea5t b\u00ean trong ph\u00e1t sinh trong qu\u00e1 tr\u00ecnh gia c\u00f4ng ngu\u1ed9i ho\u1eb7c h\u00e0n.<\/li>\n\n<li><strong>Kh\u00f4ng l\u00e0m c\u1ee9ng b\u1eb1ng x\u1eed l\u00fd nhi\u1ec7t<\/strong>: Th\u00e9p kh\u00f4ng g\u1ec9 302 kh\u00f4ng th\u1ec3 \u0111\u01b0\u1ee3c l\u00e0m c\u1ee9ng b\u1eb1ng c\u00e1ch x\u1eed l\u00fd nhi\u1ec7t do c\u1ea5u tr\u00fac austenit c\u1ee7a n\u00f3. L\u00e0m c\u1ee9ng ch\u1ee7 y\u1ebfu \u0111\u1ea1t \u0111\u01b0\u1ee3c th\u00f4ng qua l\u00e0m ngu\u1ed9i.<\/li><\/ul><h3 class=\"wp-block-heading\"><strong>X\u1eed l\u00fd b\u1ec1 m\u1eb7t<\/strong><\/h3><ul class=\"wp-block-list\"><li><strong>\u0110\u00e1nh b\u00f3ng \u0111i\u1ec7n<\/strong>:\u0110\u00e2y l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p x\u1eed l\u00fd b\u1ec1 m\u1eb7t kh\u00e1c li\u00ean quan \u0111\u1ebfn vi\u1ec7c lo\u1ea1i b\u1ecf v\u1eadt li\u1ec7u b\u1eb1ng \u0111i\u1ec7n h\u00f3a, t\u1ea1o ra b\u1ec1 m\u1eb7t m\u1ecbn h\u01a1n v\u00e0 s\u00e1ng h\u01a1n, \u0111\u1ed3ng th\u1eddi t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n.<\/li>\n\n<li><strong>Ng\u00e2m chua v\u00e0 th\u1ee5 \u0111\u1ed9ng h\u00f3a<\/strong>:Sau khi t\u1ea1o h\u00ecnh v\u00e0 h\u00e0n, th\u00e9p kh\u00f4ng g\u1ec9 302 c\u00f3 th\u1ec3 c\u1ea7n ph\u1ea3i t\u1ea9y \u0111\u1ec3 lo\u1ea1i b\u1ecf oxit b\u1ec1 m\u1eb7t v\u00e0 th\u1ee5 \u0111\u1ed9ng h\u00f3a \u0111\u1ec3 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n b\u1eb1ng c\u00e1ch lo\u1ea1i b\u1ecf ch\u1ea5t g\u00e2y \u00f4 nhi\u1ec5m b\u1ec1 m\u1eb7t.<\/li>\n\n<li><strong>\u0110\u00e1nh b\u00f3ng<\/strong>:\u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng y\u00eau c\u1ea7u \u0111\u1ed9 ho\u00e0n thi\u1ec7n cao, th\u00e9p kh\u00f4ng g\u1ec9 302 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u00e1nh b\u00f3ng c\u01a1 h\u1ecdc \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111\u1ed9 ho\u00e0n thi\u1ec7n s\u00e1ng b\u00f3ng nh\u01b0 g\u01b0\u01a1ng ho\u1eb7c nhi\u1ec1u m\u1ee9c \u0111\u1ed9 b\u1ec1 m\u1eb7t ch\u1ea3i kh\u00e1c nhau.<\/li><\/ul><h2 class=\"wp-block-heading\">S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa th\u00e9p kh\u00f4ng g\u1ec9 301, 303, 18\/8 v\u00e0 302 l\u00e0 g\u00ec?<\/h2><h3 class=\"wp-block-heading\">301 so v\u1edbi 302<\/h3><p><a href=\"https:\/\/steelprogroup.com\/vi\/stainless-steel\/grades\/grade-301\/\">301<\/a> c\u00f3 h\u00e0m l\u01b0\u1ee3ng crom v\u00e0 niken th\u1ea5p h\u01a1n m\u1ed9t ch\u00fat so v\u1edbi 302, khi\u1ebfn kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n k\u00e9m h\u01a1n nh\u01b0ng d\u1ec5 t\u1ea1o h\u00ecnh h\u01a1n. 301 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi \u0111\u1ed9 linh ho\u1ea1t v\u00e0 \u0111\u1ed9 b\u1ec1n cao.<\/p><h3 class=\"wp-block-heading\">303 so v\u1edbi 302<\/h3><p><a href=\"https:\/\/steelprogroup.com\/vi\/stainless-steel\/grades\/grade-303\/\">303<\/a> ch\u1ee9a th\u00eam l\u01b0u hu\u1ef3nh, gi\u00fap c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng gia c\u00f4ng nh\u01b0ng l\u1ea1i l\u00e0m gi\u1ea3m kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n. 302 \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng h\u01a1n khi c\u1ea7n c\u00e2n b\u1eb1ng gi\u1eefa kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u00e0 \u0111\u1ed9 b\u1ec1n.<\/p><h3 class=\"wp-block-heading\">18\/8 so v\u1edbi 302<\/h3><p>Th\u00e9p kh\u00f4ng g\u1ec9 302 v\u00e0 th\u00e9p kh\u00f4ng g\u1ec9 18\/8 v\u1ec1 c\u01a1 b\u1ea3n l\u00e0 c\u00f9ng m\u1ed9t h\u1ee3p kim, s\u1ef1 kh\u00e1c bi\u1ec7t n\u1eb1m \u1edf ph\u01b0\u01a1ng ph\u00e1p \u0111\u1eb7t t\u00ean. 302 l\u00e0 t\u00ean ti\u00eau chu\u1ea9n c\u00f4ng nghi\u1ec7p, trong khi 18\/8 \u0111\u1ec1 c\u1eadp \u0111\u1ebfn th\u00e0nh ph\u1ea7n crom 18% v\u00e0 niken 8%, th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng h\u00e0ng ng\u00e0y. C\u1ea3 hai \u0111\u1ec1u c\u00f3 hi\u1ec7u su\u1ea5t nh\u01b0 nhau v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong \u0111\u1ed3 d\u00f9ng tr\u00ean b\u00e0n \u0103n, \u0111\u1ed3 d\u00f9ng nh\u00e0 b\u1ebfp v\u00e0 thi\u1ebft b\u1ecb y t\u1ebf.<\/p><h2 class=\"wp-block-heading\">Th\u00e9p kh\u00f4ng g\u1ec9 302 hay 304 t\u1ed1t h\u01a1n?<\/h2><p><a href=\"https:\/\/steelprogroup.com\/vi\/stainless-steel\/grades\/grade-304\/\">304<\/a> th\u00e9p kh\u00f4ng g\u1ec9 n\u00f3i chung t\u1ed1t h\u01a1n th\u00e9p kh\u00f4ng g\u1ec9 302 cho h\u1ea7u h\u1ebft c\u00e1c \u1ee9ng d\u1ee5ng do kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u01b0\u1ee3t tr\u1ed9i, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong m\u00f4i tr\u01b0\u1eddng \u1ea9m \u01b0\u1edbt ho\u1eb7c \u0103n m\u00f2n, v\u00e0 kh\u1ea3 n\u0103ng h\u00e0n t\u1ed1t h\u01a1n. H\u00e0m l\u01b0\u1ee3ng carbon th\u1ea5p h\u01a1n gi\u00fap ng\u0103n ng\u1eeba k\u1ebft t\u1ee7a cacbua trong qu\u00e1 tr\u00ecnh h\u00e0n.<\/p><p>Th\u00e9p kh\u00f4ng g\u1ec9 302 c\u00f3 \u0111\u1ed9 b\u1ec1n k\u00e9o cao h\u01a1n m\u1ed9t ch\u00fat v\u00e0 ph\u00f9 h\u1ee3p h\u01a1n cho c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi \u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 c\u1ee9ng cao h\u01a1n, ch\u1eb3ng h\u1ea1n nh\u01b0 l\u00f2 xo ho\u1eb7c c\u00e1c b\u1ed9 ph\u1eadn ch\u1ecbu \u1ee9ng su\u1ea5t cao.<\/p><p>\u0110\u1ed1i v\u1edbi h\u1ea7u h\u1ebft c\u00e1c m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng, 304 \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng h\u01a1n do \u0111\u1ed9 b\u1ec1n, kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u00e0 d\u1ec5 ch\u1ebf t\u1ea1o. S\u1eed d\u1ee5ng 302 khi c\u1ea7n \u0111\u1ed9 b\u1ec1n cao h\u01a1n ho\u1eb7c l\u00e0m c\u1ee9ng khi l\u00e0m vi\u1ec7c.<\/p><h2 class=\"wp-block-heading\">Th\u00e9p kh\u00f4ng g\u1ec9 302 c\u00f3 t\u1ed1t h\u01a1n th\u00e9p kh\u00f4ng g\u1ec9 316 kh\u00f4ng?<\/h2><p><a href=\"https:\/\/steelprogroup.com\/vi\/stainless-steel\/grades\/grade-316\/\">th\u00e9p kh\u00f4ng g\u1ec9 316<\/a> t\u1ed1t h\u01a1n 302 v\u1ec1 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong m\u00f4i tr\u01b0\u1eddng bi\u1ec3n, h\u00f3a ch\u1ea5t ho\u1eb7c nhi\u1ec7t \u0111\u1ed9 cao do c\u00f3 ch\u1ee9a molypden.<\/p><p>Th\u00e9p kh\u00f4ng g\u1ec9 302 b\u1ec1n h\u01a1n m\u1ed9t ch\u00fat v\u00e0 r\u1ebb h\u01a1n, nh\u01b0ng 316 l\u1ea1i v\u01b0\u1ee3t tr\u1ed9i h\u01a1n trong \u0111i\u1ec1u ki\u1ec7n kh\u1eafc nghi\u1ec7t. S\u1eed d\u1ee5ng <strong>302<\/strong> khi \u0111\u1ed9 b\u1ec1n v\u00e0 chi ph\u00ed quan tr\u1ecdng h\u01a1n, v\u00e0 316 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t h\u01a1n.<\/p><h2 class=\"wp-block-heading\">Th\u00e9p kh\u00f4ng g\u1ec9 302 c\u00f3 ph\u1ea3i l\u00e0 lo\u1ea1i th\u00e9p d\u00f9ng trong th\u1ef1c ph\u1ea9m kh\u00f4ng?<\/h2><p>Th\u00e9p kh\u00f4ng g\u1ec9 302 th\u01b0\u1eddng kh\u00f4ng \u0111\u01b0\u1ee3c coi l\u00e0 lo\u1ea1i th\u00e9p d\u00f9ng trong th\u1ef1c ph\u1ea9m v\u00ec n\u00f3 ch\u1ee9a h\u00e0m l\u01b0\u1ee3ng niken v\u00e0 mangan cao, \u0111\u1ed3ng th\u1eddi s\u1ebd b\u1ecb oxy h\u00f3a v\u00e0 r\u1ec9 s\u00e9t khi ti\u1ebfp x\u00fac v\u1edbi ch\u1ea5t l\u1ecfng c\u00f3 t\u00ednh axit ho\u1eb7c ki\u1ec1m, kh\u00f4ng \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c c\u00e1c y\u00eau c\u1ea7u v\u1ec1 d\u00f9ng trong th\u1ef1c ph\u1ea9m.<\/p><h2 class=\"wp-block-heading\">Th\u00e9p kh\u00f4ng g\u1ec9 302 c\u00f3 t\u1eeb t\u00ednh kh\u00f4ng?<\/h2><p>Th\u00e9p kh\u00f4ng g\u1ec9 302 kh\u00f4ng c\u00f3 t\u1eeb t\u00ednh trong \u0111i\u1ec1u ki\u1ec7n \u1ee7. Tuy nhi\u00ean, sau qu\u00e1 tr\u00ecnh gia c\u00f4ng ngu\u1ed9i ho\u1eb7c t\u1ea1o h\u00ecnh, n\u00f3 c\u00f3 th\u1ec3 tr\u1edf th\u00e0nh t\u1eeb t\u00ednh do nh\u1eefng thay \u0111\u1ed5i v\u1ec1 c\u1ea5u tr\u00fac trong th\u00e9p do bi\u1ebfn d\u1ea1ng c\u01a1 h\u1ecdc g\u00e2y ra. M\u1ee9c \u0111\u1ed9 t\u1eeb t\u00ednh \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi m\u1ee9c \u0111\u1ed9 gia c\u00f4ng ngu\u1ed9i, m\u1ee9c \u0111\u1ed9 gia c\u00f4ng ngu\u1ed9i c\u00e0ng cao th\u00ec t\u1eeb t\u00ednh c\u1ee7a khu v\u1ef1c c\u00e0ng m\u1ea1nh.<\/p><p>N\u1ebfu t\u00ednh ch\u1ea5t phi t\u1eeb t\u00ednh l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng \u0111\u1ed1i v\u1edbi \u1ee9ng d\u1ee5ng, c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n \u1ee7 sau khi ch\u1ebf t\u1ea1o \u0111\u1ec3 \u0111\u01b0a h\u1ee3p kim tr\u1edf l\u1ea1i tr\u1ea1ng th\u00e1i phi t\u1eeb t\u00ednh ban \u0111\u1ea7u.<\/p><h2 class=\"wp-block-heading\">Th\u00e9p kh\u00f4ng g\u1ec9 302 c\u00f3 b\u1ecb g\u1ec9 kh\u00f4ng?<\/h2><p>Gi\u1ed1ng nh\u01b0 t\u1ea5t c\u1ea3 c\u00e1c lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9, 302 c\u00f3 th\u1ec3 b\u1ecb \u0103n m\u00f2n trong m\u1ed9t s\u1ed1 \u0111i\u1ec1u ki\u1ec7n nh\u1ea5t \u0111\u1ecbnh. V\u00ed d\u1ee5, n\u1ebfu ti\u1ebfp x\u00fac v\u1edbi m\u00f4i tr\u01b0\u1eddng c\u00f3 t\u00ednh \u0103n m\u00f2n cao, ch\u1eb3ng h\u1ea1n nh\u01b0 n\u01b0\u1edbc mu\u1ed1i, n\u1ed3ng \u0111\u1ed9 clorua cao ho\u1eb7c h\u00f3a ch\u1ea5t c\u00f3 t\u00ednh axit trong th\u1eddi gian d\u00e0i, l\u1edbp b\u1ea3o v\u1ec7 c\u00f3 th\u1ec3 b\u1ecb ph\u00e2n h\u1ee7y, d\u1eabn \u0111\u1ebfn r\u1ec9 s\u00e9t.&nbsp;<\/p><h2 class=\"wp-block-heading\">Nh\u00e0 s\u1ea3n xu\u1ea5t th\u00e9p kh\u00f4ng g\u1ec9 302<\/h2><p>SteelPRO Group cung c\u1ea5p c\u00e1c gi\u1ea3i ph\u00e1p to\u00e0n di\u1ec7n cho th\u00e9p kh\u00f4ng g\u1ec9 302, bao g\u1ed3m m\u1ecdi kh\u00eda c\u1ea1nh t\u1eeb s\u1ea3n xu\u1ea5t \u0111\u1ebfn sau b\u00e1n h\u00e0ng. Ch\u00fang t\u00f4i \u0111\u00e1p \u1ee9ng c\u00e1c nhu c\u1ea7u kh\u00e1c nhau c\u1ee7a kh\u00e1ch h\u00e0ng b\u1eb1ng c\u00e1c s\u1ea3n ph\u1ea9m ch\u1ea5t l\u01b0\u1ee3ng cao v\u00e0 d\u1ecbch v\u1ee5 t\u00f9y ch\u1ec9nh \u0111\u01b0\u1ee3c c\u00e1 nh\u00e2n h\u00f3a.<\/p><p>Ch\u1ecdn ch\u00fang t\u00f4i, b\u1ea1n s\u1ebd \u0111\u01b0\u1ee3c h\u01b0\u1edfng kinh nghi\u1ec7m s\u1ea3n xu\u1ea5t phong ph\u00fa v\u00e0 n\u0103ng l\u1ef1c s\u1ea3n xu\u1ea5t m\u1ea1nh m\u1ebd. Ch\u00fang t\u00f4i s\u1ea3n xu\u1ea5t h\u01a1n 1 tri\u1ec7u t\u1ea5n v\u1eadt li\u1ec7u th\u00e9p kh\u00f4ng g\u1ec9 m\u1ed7i n\u0103m v\u00e0 \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u1ecdi s\u1ea3n ph\u1ea9m \u0111\u1ec1u v\u01b0\u1ee3t qua c\u00e1c b\u00e0i ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng nghi\u00eam ng\u1eb7t, cung c\u1ea5p cam k\u1ebft ch\u1ea5t l\u01b0\u1ee3ng 100% \u0111\u1ec3 gi\u00fap b\u1ea1n \u0111\u00e1p \u1ee9ng c\u00e1c th\u00e1ch th\u1ee9c c\u1ee7a th\u1ecb tr\u01b0\u1eddng.<\/p><p>Ch\u00fang t\u00f4i cung c\u1ea5p gi\u00e1 \u01b0u \u0111\u00e3i tr\u1ef1c ti\u1ebfp t\u1eeb nh\u00e0 m\u00e1y v\u00e0 gi\u1eef m\u1ed9t l\u01b0\u1ee3ng h\u00e0ng t\u1ed3n kho l\u1edbn \u0111\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u c\u1ea5p thi\u1ebft c\u1ee7a kh\u00e1ch h\u00e0ng. Cho d\u00f9 b\u1ea1n c\u1ea7n s\u1ea3n ph\u1ea9m ti\u00eau chu\u1ea9n hay th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt t\u00f9y ch\u1ec9nh, ch\u00fang t\u00f4i c\u00f3 th\u1ec3 cung c\u1ea5p nhanh ch\u00f3ng v\u00e0 \u0111\u1ea3m b\u1ea3o giao h\u00e0ng \u0111\u00fang h\u1ea1n. <a href=\"https:\/\/steelprogroup.com\/vi\/contact-us\/\">Li\u00ean h\u1ec7 v\u1edbi ch\u00fang t\u00f4i<\/a> ngay \u0111\u1ec3 t\u00ecm hi\u1ec3u th\u00eam v\u1ec1 c\u00e1c d\u1ecbch v\u1ee5 t\u00f9y ch\u1ec9nh c\u1ee7a ch\u00fang t\u00f4i.<\/p>","protected":false},"excerpt":{"rendered":"<p>We introduce the composition, characteristics, processing methods, pros and cons of 302 stainless steel in detail, and help you better [&hellip;]<\/p>","protected":false},"author":1,"featured_media":10925,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_eb_attr":"","rank_math_lock_modified_date":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[4191,112],"tags":[],"class_list":["post-10950","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-grades","category-stainless-steel"],"acf":[],"_links":{"self":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/10950","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/comments?post=10950"}],"version-history":[{"count":0,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/10950\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media\/10925"}],"wp:attachment":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media?parent=10950"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/categories?post=10950"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/tags?post=10950"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}