{"id":11649,"date":"2024-10-17T02:36:00","date_gmt":"2024-10-16T18:36:00","guid":{"rendered":"https:\/\/app11147.cloudwayssites.com\/?p=11649"},"modified":"2024-11-08T09:13:19","modified_gmt":"2024-11-08T01:13:19","slug":"grade-408","status":"publish","type":"post","link":"https:\/\/steelprogroup.com\/vi\/stainless-steel\/grades\/grade-408\/","title":{"rendered":"Hi\u1ec3u v\u1ec1 th\u00e9p kh\u00f4ng g\u1ec9 408: M\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng trong d\u00f2ng 400"},"content":{"rendered":"<p>L\u00e0 m\u1ed9t th\u00e0nh vi\u00ean c\u1ee7a d\u00f2ng 400, th\u00e9p kh\u00f4ng g\u1ec9 408 \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi \u0111\u1ed9 b\u1ec1n nhi\u1ec7t \u0111\u1ed9 cao. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd \u0111\u1ec1 c\u1eadp \u0111\u1ebfn c\u00e1c kh\u00eda c\u1ea1nh ch\u00ednh c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 408, bao g\u1ed3m th\u00e0nh ph\u1ea7n, t\u00ednh ch\u1ea5t v\u00e0 \u1ee9ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh c\u1ee7a n\u00f3.<\/p><h2 class=\"wp-block-heading\">Th\u00e9p kh\u00f4ng g\u1ec9 408 l\u00e0 g\u00ec?<\/h2><p>Th\u00e9p kh\u00f4ng g\u1ec9 408 l\u00e0 th\u00e9p kh\u00f4ng g\u1ec9 ferritic ch\u1ee9a kho\u1ea3ng 11% crom v\u00e0 kho\u1ea3ng 0,5% niken. \u0110\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t, 408 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong h\u1ec7 th\u1ed1ng x\u1ea3 v\u00e0 b\u1ed9 trao \u0111\u1ed5i nhi\u1ec7t. C\u00e1n n\u00f3ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 gia c\u00f4ng. Th\u00e0nh ph\u1ea7n c\u1ee5 th\u1ec3 c\u1ee7a n\u00f3 mang l\u1ea1i kh\u1ea3 n\u0103ng ch\u1ed1ng oxy h\u00f3a t\u1ed1t.<\/p><h2 class=\"wp-block-heading\">T\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi th\u00e9p kh\u00f4ng g\u1ec9 408<\/h2><figure class=\"wp-block-table\"><table><tbody><tr><td>Qu\u1ed1c gia\/Khu v\u1ef1c<\/td><td>Ti\u00eau chu\u1ea9n\/\u0110\u1eb7c \u0111i\u1ec3m k\u1ef9 thu\u1eadt<\/td><td>L\u1edbp t\u01b0\u01a1ng \u0111\u01b0\u01a1ng<\/td><\/tr><tr><td>Trung Qu\u1ed1c<\/td><td>Ti\u00eau chu\u1ea9n GB\/T 1220<\/td><td>1Cr11Ti<\/td><\/tr><tr><td>Hoa K\u1ef3<\/td><td>Ti\u00eau chu\u1ea9n ASTMA240<\/td><td>UNS S40800<\/td><\/tr><tr><td>Nh\u1eadt B\u1ea3n<\/td><td>Ti\u00eau chu\u1ea9n JIS G4304<\/td><td>SUS408<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 408<\/h2><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Y\u1ebfu t\u1ed1<\/strong><\/td><td><strong>C<\/strong><\/td><td><strong>Si<\/strong><\/td><td><strong>Mn<\/strong><\/td><td><strong>P<\/strong><\/td><td><strong>S<\/strong><\/td><td><strong>Cr<\/strong><\/td><td><strong>Ni<\/strong><\/td><td><strong>T\u00ed<\/strong><\/td><\/tr><tr><td><strong>kh\u1ed1i l\u01b0\u1ee3ng (%)<\/strong><\/td><td>\u22640,08<\/td><td>\u22641,00<\/td><td>\u22641,00<\/td><td>\u22640,040<\/td><td>\u22640,030<\/td><td>10,5\u201311,75<\/td><td>\u22640,50<\/td><td>0,50\u20130,75<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">T\u00ednh ch\u1ea5t c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 408<\/h2><h3 class=\"wp-block-heading\">T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc<\/h3><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>T\u00e0i s\u1ea3n<\/strong><\/td><td><strong>Gi\u00e1 tr\u1ecb \u0111i\u1ec3n h\u00ecnh<\/strong><\/td><td><strong>Gi\u00e1 tr\u1ecb \u0111i\u1ec3n h\u00ecnh<\/strong><\/td><\/tr><tr><td>\u0110\u1ed9 b\u1ec1n k\u00e9o<\/td><td>450\u2013600MPa<\/td><td>65\u201387 ksi<\/td><\/tr><tr><td>S\u1ee9c ch\u1ecbu l\u1ef1c<\/td><td>~275MPa<\/td><td>~40 kil\u00f4m\u00e9t<\/td><\/tr><tr><td>\u0110\u1ed9 c\u1ee9ng Brinell&nbsp;<\/td><td>~150<\/td><td>~150<\/td><\/tr><tr><td>\u0110\u1ed9 c\u1ee9ng Rockwell<\/td><td>~75<\/td><td>~75<\/td><\/tr><tr><td>\u0110\u1ed9 gi\u00e3n d\u00e0i<\/td><td>~20%<\/td><td>~20%<\/td><\/tr><\/tbody><\/table><\/figure><h3 class=\"wp-block-heading\">T\u00ednh ch\u1ea5t v\u1eadt l\u00fd<\/h3><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>T\u00e0i s\u1ea3n<\/strong><\/td><td><strong>Gi\u00e1 tr\u1ecb \u0111i\u1ec3n h\u00ecnh<\/strong><\/td><td><strong>Gi\u00e1 tr\u1ecb \u0111i\u1ec3n h\u00ecnh<\/strong><\/td><\/tr><tr><td>T\u1ec9 tr\u1ecdng<\/td><td>7,75 g\/cm\u00b3<\/td><td>0,280 lb\/in\u00b3<\/td><\/tr><tr><td>\u0110i\u1ec3m n\u00f3ng ch\u1ea3y<\/td><td>1.420\u20131.460\u00b0C<\/td><td>2.588\u20132.660\u00b0F<\/td><\/tr><tr><td>\u0110\u1ed9 d\u1eabn nhi\u1ec7t<\/td><td>26 W\/m\u00b7K \u1edf 20\u00b0C<\/td><td>15 BTU\u00b7ft\u00b7hr\u207b\u00b9\u00b7ft\u207b\u00b2\u00b7\u00b0F\u207b\u00b9 \u1edf 68\u00b0F<\/td><\/tr><tr><td>S\u1ef1 gi\u00e3n n\u1edf v\u00ec nhi\u1ec7t<\/td><td>10,4 \u00b5m\/m\u00b7K (20\u2013100\u00b0C)<\/td><td>5,8 \u00d7 10\u207b\u2076 in\/in\u00b7\u00b0F (68\u2013212\u00b0F)<\/td><\/tr><tr><td>\u0110\u1ed9 d\u1eabn \u0111i\u1ec7n<\/td><td>~1,4 \u00d7 10\u2076 L\/m<\/td><td>~2.4% IACS<\/td><\/tr><tr><td>T\u00ednh ch\u1ea5t t\u1eeb t\u00ednh<\/td><td>S\u1eaft t\u1eeb<\/td><td>S\u1eaft t\u1eeb<\/td><\/tr><\/tbody><\/table><\/figure><h3 class=\"wp-block-heading\">T\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc<\/h3><ul class=\"wp-block-list\"><li>Kh\u1ea3 n\u0103ng ch\u1ed1ng oxy h\u00f3a m\u1ea1nh<\/li><\/ul><p>408 c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 ti\u1ebfp x\u00fac li\u00ean t\u1ee5c l\u00ean \u0111\u1ebfn 815\u00b0C v\u00e0 ti\u1ebfp x\u00fac ng\u1eaft qu\u00e3ng l\u00ean \u0111\u1ebfn 870\u00b0C. \u0110i\u1ec1u n\u00e0y l\u00e0m cho n\u00f3 ph\u00f9 h\u1ee3p cho c\u00e1c \u1ee9ng d\u1ee5ng nhi\u1ec7t \u0111\u1ed9 cao.<\/p><ul class=\"wp-block-list\"><li>Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u1eeba ph\u1ea3i<\/li><\/ul><p>N\u00f3 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t trong m\u00f4i tr\u01b0\u1eddng m\u00e0 qu\u00e1 tr\u00ecnh oxy h\u00f3a l\u00e0 m\u1ed1i quan t\u00e2m ch\u00ednh. N\u00f3 kh\u00f4ng l\u00fd t\u01b0\u1edfng cho m\u00f4i tr\u01b0\u1eddng c\u00f3 t\u00ednh \u0103n m\u00f2n cao, ch\u1eb3ng h\u1ea1n nh\u01b0 m\u00f4i tr\u01b0\u1eddng c\u00f3 t\u00ednh axit ho\u1eb7c m\u00f4i tr\u01b0\u1eddng bi\u1ec3n.<\/p><ul class=\"wp-block-list\"><li>Kh\u1ea3 n\u0103ng ch\u1ed1ng co gi\u00e3n<\/li><\/ul><p>Nh\u1edd c\u00f3 h\u00e0m l\u01b0\u1ee3ng crom, th\u00e9p kh\u00f4ng g\u1ec9 408 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0111\u00f3ng c\u1eb7n hi\u1ec7u qu\u1ea3, gi\u00fap ng\u0103n ng\u1eeba b\u1ec1 m\u1eb7t b\u1ecb h\u01b0 h\u1ecfng \u1edf nhi\u1ec7t \u0111\u1ed9 cao.<\/p><ul class=\"wp-block-list\"><li>Kh\u1ea3 n\u0103ng ch\u1ed1ng k\u1ebft t\u1ee7a c\u1ee7a cacbua<\/li><\/ul><p>Vi\u1ec7c b\u1ed5 sung titan ng\u0103n ng\u1eeba s\u1ef1 h\u00ecnh th\u00e0nh crom cacbua. \u0110i\u1ec1u n\u00e0y l\u00e0m gi\u1ea3m nguy c\u01a1 \u0103n m\u00f2n gi\u1eefa c\u00e1c h\u1ea1t trong qu\u00e1 tr\u00ecnh h\u00e0n ho\u1eb7c ti\u1ebfp x\u00fac l\u00e2u v\u1edbi nhi\u1ec7t \u0111\u1ed9 cao.<\/p><h2 class=\"wp-block-heading\">\u1ee8ng d\u1ee5ng th\u00e9p kh\u00f4ng g\u1ec9 408<\/h2><ul class=\"wp-block-list\"><li>\u00d4 t\u00f4<\/li><\/ul><p>\u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng trong h\u1ec7 th\u1ed1ng x\u1ea3 do c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t v\u00e0 ch\u1ed1ng oxy h\u00f3a cao.<\/p><ul class=\"wp-block-list\"><li>Thi\u1ebft b\u1ecb gia d\u1ee5ng<\/li><\/ul><p>\u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng trong l\u00f2 n\u01b0\u1edbng, t\u1ee7 l\u1ea1nh v\u00e0 m\u00e1y r\u1eeda ch\u00e9n v\u00ec kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n.<\/p><ul class=\"wp-block-list\"><li>B\u1ed9 trao \u0111\u1ed5i nhi\u1ec7t<\/li><\/ul><p>L\u00fd t\u01b0\u1edfng cho b\u1ed9 trao \u0111\u1ed5i nhi\u1ec7t c\u00f4ng nghi\u1ec7p, mang l\u1ea1i hi\u1ec7u su\u1ea5t m\u1ea1nh m\u1ebd \u1edf nhi\u1ec7t \u0111\u1ed9 cao.<\/p><ul class=\"wp-block-list\"><li>Ki\u1ebfn tr\u00fac<\/li><\/ul><p>\u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng trong \u1ed1p l\u00e1t v\u00e0 k\u1ebft c\u1ea5u ngo\u1ea1i th\u1ea5t, \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 cao v\u1ec1 \u0111\u1ed9 b\u1ec1n v\u00e0 t\u00ednh th\u1ea9m m\u1ef9.<\/p><ul class=\"wp-block-list\"><li>\u0110\u1ed3 n\u1ea5u n\u01b0\u1edbng<\/li><\/ul><p>\u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng trong n\u1ed3i v\u00e0 ch\u1ea3o v\u00ec kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t v\u00e0 ch\u1ed1ng \u0111\u1ed5i m\u00e0u.<\/p><h2 class=\"wp-block-heading\">408 S\u1ea3n ph\u1ea9m th\u00e9p kh\u00f4ng g\u1ec9<\/h2><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>S\u1ea3n ph\u1ea9m<\/strong><\/td><td><strong>\u1ee8ng d\u1ee5ng<\/strong><\/td><td><strong>\u0110\u1eb7c tr\u01b0ng<\/strong><\/td><\/tr><tr><td>T\u1ea5m v\u00e0 T\u1ea5m<\/td><td>Linh ki\u1ec7n l\u00f2, h\u1ec7 th\u1ed1ng \u1ed1ng x\u1ea3 \u00f4 t\u00f4<\/td><td>Kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t v\u00e0 \u0111\u1ed9 b\u1ec1n cao<\/td><\/tr><tr><td>Thanh<\/td><td>B\u1ed9 trao \u0111\u1ed5i nhi\u1ec7t c\u00f4ng nghi\u1ec7p, linh ki\u1ec7n m\u00e1y m\u00f3c<\/td><td>\u0110\u1ed9 b\u1ec1n \u1edf nhi\u1ec7t \u0111\u1ed9 cao<\/td><\/tr><tr><td>\u1ed0ng v\u00e0 \u1ed0ng<\/td><td>Nh\u00e0 m\u00e1y \u0111i\u1ec7n, \u1ee9ng d\u1ee5ng truy\u1ec1n nhi\u1ec7t<\/td><td>Kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t v\u00e0 oxy h\u00f3a<\/td><\/tr><tr><td>Linh ki\u1ec7n r\u00e8n<\/td><td>Linh ki\u1ec7n m\u00e1y m\u00f3c c\u00f4ng nghi\u1ec7p v\u00e0 \u00f4 t\u00f4<\/td><td>Hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 b\u1ec1n \u1edf nhi\u1ec7t \u0111\u1ed9 cao<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">\u01afu v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 408<\/h2><p>Sau \u0111\u00e2y l\u00e0 nh\u1eefng \u01b0u \u0111i\u1ec3m c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 408:<\/p><ul class=\"wp-block-list\"><li><strong>Kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t cao<\/strong>: Ho\u1ea1t \u0111\u1ed9ng t\u1ed1t trong m\u00f4i tr\u01b0\u1eddng nhi\u1ec7t \u0111\u1ed9 cao, l\u00fd t\u01b0\u1edfng cho h\u1ec7 th\u1ed1ng x\u1ea3 v\u00e0 b\u1ed9 trao \u0111\u1ed5i nhi\u1ec7t.<\/li>\n\n<li><strong>Kh\u1ea3 n\u0103ng ch\u1ed1ng oxy h\u00f3a t\u1ed1t<\/strong>: N\u00f3 ch\u1ed1ng l\u1ea1i qu\u00e1 tr\u00ecnh oxy h\u00f3a l\u00ean \u0111\u1ebfn <strong>815\u00b0C<\/strong> trong d\u1ecbch v\u1ee5 li\u00ean t\u1ee5c v\u00e0 <strong>870\u00b0C<\/strong> trong d\u1ecbch v\u1ee5 kh\u00f4ng li\u00ean t\u1ee5c.<\/li>\n\n<li><strong>Hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed<\/strong>:Do h\u00e0m l\u01b0\u1ee3ng niken v\u00e0 crom th\u1ea5p h\u01a1n n\u00ean gi\u00e1 c\u1ea3 ph\u1ea3i ch\u0103ng h\u01a1n so v\u1edbi c\u00e1c lo\u1ea1i th\u00e9p ch\u1ea5t l\u01b0\u1ee3ng cao h\u01a1n nh\u01b0 304.<\/li><\/ul><p>Sau \u0111\u00e2y l\u00e0 nh\u1eefng nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 408:<\/p><ul class=\"wp-block-list\"><li><strong>Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n th\u1ea5p h\u01a1n<\/strong>:N\u00f3 ch\u1ec9 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n \u1edf m\u1ee9c trung b\u00ecnh, do \u0111\u00f3 \u00edt ph\u00f9 h\u1ee3p v\u1edbi m\u00f4i tr\u01b0\u1eddng c\u00f3 t\u00ednh \u0103n m\u00f2n cao nh\u01b0 m\u00f4i tr\u01b0\u1eddng bi\u1ec3n ho\u1eb7c x\u1eed l\u00fd h\u00f3a ch\u1ea5t.<\/li>\n\n<li><strong>Kh\u1ea3 n\u0103ng l\u00e0m vi\u1ec7c l\u1ea1nh h\u1ea1n ch\u1ebf<\/strong>: \u0110\u1ed9 d\u1ebbo th\u1ea5p h\u01a1n khi\u1ebfn n\u00f3 kh\u00f4ng th\u00edch h\u1ee3p \u0111\u1ec3 gia c\u00f4ng ngu\u1ed9i \u1edf m\u1ee9c \u0111\u1ed9 l\u1edbn.<\/li>\n\n<li><strong>Kh\u00f4ng th\u1ec3 l\u00e0m c\u1ee9ng b\u1eb1ng c\u00e1ch x\u1eed l\u00fd nhi\u1ec7t<\/strong>:Kh\u00f4ng gi\u1ed1ng nh\u01b0 th\u00e9p martensitic, th\u00e9p n\u00e0y kh\u00f4ng th\u1ec3 \u0111\u01b0\u1ee3c l\u00e0m c\u1ee9ng th\u00f4ng qua x\u1eed l\u00fd nhi\u1ec7t, h\u1ea1n ch\u1ebf \u1ee9ng d\u1ee5ng \u1edf nh\u1eefng n\u01a1i y\u00eau c\u1ea7u \u0111\u1ed9 c\u1ee9ng cao.<\/li><\/ul><h2 class=\"wp-block-heading\">Gia c\u00f4ng th\u00e9p kh\u00f4ng g\u1ec9 408<\/h2><h3 class=\"wp-block-heading\">C\u00e1n n\u00f3ng<\/h3><ul class=\"wp-block-list\"><li>\u0110\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf nhi\u1ec7t \u0111\u1ed9 cao \u0111\u1ec3 t\u1ea1o th\u00e0nh t\u1ea5m, \u0111\u0129a ho\u1eb7c thanh.<\/li>\n\n<li>T\u0103ng c\u01b0\u1eddng s\u1ee9c m\u1ea1nh v\u00e0 hi\u1ec7u su\u1ea5t \u1edf nhi\u1ec7t \u0111\u1ed9 cao.<\/li><\/ul><h3 class=\"wp-block-heading\">L\u00e0m vi\u1ec7c l\u1ea1nh<\/h3><ul class=\"wp-block-list\"><li>Qu\u00e1 tr\u00ecnh n\u00e0y bao g\u1ed3m c\u00e1c k\u1ef9 thu\u1eadt nh\u01b0 c\u00e1n ngu\u1ed9i, u\u1ed1n ho\u1eb7c k\u00e9o.<\/li>\n\n<li>N\u00f3 l\u00e0m t\u0103ng \u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 c\u1ee9ng c\u1ee7a v\u1eadt li\u1ec7u b\u1eb1ng c\u00e1ch h\u1ea1n ch\u1ebf chuy\u1ec3n \u0111\u1ed9ng sai l\u1ec7ch, m\u1eb7c d\u00f9 \u0111i\u1ec1u n\u00e0y l\u00e0m gi\u1ea3m \u0111\u1ed9 d\u1ebbo.<\/li>\n\n<li>Sau qu\u00e1 tr\u00ecnh l\u00e0m ngu\u1ed9i l\u00e2u d\u00e0i, qu\u00e1 tr\u00ecnh \u1ee7 th\u01b0\u1eddng c\u1ea7n thi\u1ebft \u0111\u1ec3 ph\u1ee5c h\u1ed3i \u0111\u1ed9 d\u1ebbo v\u00e0 gi\u1ea3m \u1ee9ng su\u1ea5t b\u00ean trong.<\/li><\/ul><h3 class=\"wp-block-heading\">X\u1eed l\u00fd nhi\u1ec7t<\/h3><ul class=\"wp-block-list\"><li>\u1ee6 \u1edf nhi\u1ec7t \u0111\u1ed9 760\u2013815\u00b0C (1400\u20131500\u00b0F) v\u00e0 l\u00e0m m\u00e1t b\u1eb1ng kh\u00f4ng kh\u00ed.<\/li>\n\n<li>\u0110i\u1ec1u n\u00e0y gi\u00fap kh\u00f4i ph\u1ee5c \u0111\u1ed9 d\u1ebbo sau khi gia c\u00f4ng ngu\u1ed9i v\u00e0 gi\u1ea3m \u1ee9ng su\u1ea5t b\u00ean trong ph\u00e1t sinh trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t.<\/li><\/ul><h3 class=\"wp-block-heading\">Gia c\u00f4ng<\/h3><ul class=\"wp-block-list\"><li>Qu\u00e1 tr\u00ecnh gia c\u00f4ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng c\u00e1c k\u1ef9 thu\u1eadt ti\u00eau chu\u1ea9n.<\/li>\n\n<li>Vi\u1ec7c b\u00f4i tr\u01a1n v\u00e0 l\u1ef1a ch\u1ecdn d\u1ee5ng c\u1ee5 ph\u00f9 h\u1ee3p r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 tr\u00e1nh hi\u1ec7n t\u01b0\u1ee3ng c\u1ee9ng khi l\u00e0m vi\u1ec7c.<\/li><\/ul><h3 class=\"wp-block-heading\">H\u00e0n<\/h3><ul class=\"wp-block-list\"><li>L\u00e0m n\u00f3ng tr\u01b0\u1edbc \u1edf nhi\u1ec7t \u0111\u1ed9 149\u2013260\u00b0C (300\u2013500\u00b0F) \u0111\u1ec3 tr\u00e1nh n\u1ee9t. Kh\u00f4ng c\u1ea7n x\u1eed l\u00fd nhi\u1ec7t sau khi h\u00e0n.<\/li>\n\n<li>C\u00e1c ph\u01b0\u01a1ng ph\u00e1p ph\u1ed5 bi\u1ebfn: SMAW, GMAW, GTAW.<\/li><\/ul><h3 class=\"wp-block-heading\">Ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t<\/h3><ul class=\"wp-block-list\"><li>Ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t cho th\u00e9p kh\u00f4ng g\u1ec9 408<strong> <\/strong>bao g\u1ed3m c\u00e1c ph\u01b0\u01a1ng ph\u00e1p x\u1eed l\u00fd nh\u01b0 ng\u00e2m chua v\u00e0 th\u1ee5 \u0111\u1ed9ng h\u00f3a.&nbsp;<\/li>\n\n<li>\u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n b\u1ec1 m\u1eb7t. N\u00f3 c\u0169ng c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n v\u1ebb ngo\u00e0i v\u00e0 lo\u1ea1i b\u1ecf t\u1ea1p ch\u1ea5t.<\/li><\/ul><h2 class=\"wp-block-heading\">Nh\u1eefng \u0111i\u1ec1u kh\u00e1c v\u1ec1 th\u00e9p kh\u00f4ng g\u1ec9 408<\/h2><h3 class=\"wp-block-heading\">Th\u00e9p kh\u00f4ng g\u1ec9 408 so v\u1edbi 304<\/h3><p><a href=\"https:\/\/steelprogroup.com\/vi\/stainless-steel\/grades\/grade-304\/\">304<\/a> c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t h\u01a1n v\u00e0 408 ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n. 408 th\u01b0\u1eddng r\u1ebb h\u01a1n do h\u00e0m l\u01b0\u1ee3ng niken th\u1ea5p h\u01a1n. 304 d\u1ebbo h\u01a1n v\u00e0 d\u1ec5 gia c\u00f4ng ngu\u1ed9i h\u01a1n.<\/p><p>408 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong h\u1ec7 th\u1ed1ng \u1ed1ng x\u1ea3 \u00f4 t\u00f4 v\u00e0 l\u00f2 s\u01b0\u1edfi. 304 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong ch\u1ebf bi\u1ebfn th\u1ef1c ph\u1ea9m v\u00e0 thi\u1ebft b\u1ecb y t\u1ebf.<\/p><h3 class=\"wp-block-heading\">Kho\u1ea3ng 408 Gi\u00e1 th\u00e9p kh\u00f4ng g\u1ec9<\/h3><p>Gi\u00e1 c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 408 th\u01b0\u1eddng th\u1ea5p h\u01a1n c\u00e1c lo\u1ea1i h\u1ee3p kim cao c\u1ea5p h\u01a1n. Tuy nhi\u00ean, gi\u00e1 th\u1ef1c t\u1ebf c\u00f3 th\u1ec3 thay \u0111\u1ed5i t\u00f9y theo \u0111i\u1ec1u ki\u1ec7n th\u1ecb tr\u01b0\u1eddng, cung, c\u1ea7u v\u00e0 chi ph\u00ed gia c\u00f4ng.<\/p><h3 class=\"wp-block-heading\">Kho\u1ea3ng 400 Series th\u00e9p kh\u00f4ng g\u1ec9<\/h3><p>Th\u00e9p kh\u00f4ng g\u1ec9 series 400 bao g\u1ed3m th\u00e9p kh\u00f4ng g\u1ec9 ferritic v\u00e0 martensitic. Nh\u1eefng lo\u1ea1i th\u00e9p n\u00e0y \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi t\u00ednh ch\u1ea5t t\u1eeb t\u00ednh, \u0111\u1ed9 b\u1ec1n cao v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t trong m\u00f4i tr\u01b0\u1eddng nh\u1eb9. C\u00e1c lo\u1ea1i ph\u1ed5 bi\u1ebfn bao g\u1ed3m <a href=\"https:\/\/steelprogroup.com\/vi\/stainless-steel\/grades\/grade-409\/\">409<\/a>, <a href=\"https:\/\/steelprogroup.com\/vi\/stainless-steel\/grades\/grade-410\/\">410<\/a>, V\u00e0 <a href=\"https:\/\/steelprogroup.com\/vi\/stainless-steel\/grades\/grade-430\/\">430<\/a>.<\/p><h2 class=\"wp-block-heading\">B\u1ea3n t\u00f3m t\u1eaft<\/h2><p>B\u00e0i vi\u1ebft n\u00e0y cung c\u1ea5p c\u00e1i nh\u00ecn to\u00e0n di\u1ec7n v\u1ec1 th\u00e9p kh\u00f4ng g\u1ec9 408, th\u00e0nh ph\u1ea7n v\u00e0 t\u00ednh ch\u1ea5t c\u1ee7a n\u00f3 c\u0169ng nh\u01b0 kh\u1ea3 n\u0103ng ph\u00f9 h\u1ee3p cho c\u00e1c \u1ee9ng d\u1ee5ng nhi\u1ec7t \u0111\u1ed9 cao nh\u01b0 \u00f4 t\u00f4 v\u00e0 c\u00f4ng nghi\u1ec7p.<\/p><p>T\u1ea1i Steel Pro Group, ch\u00fang t\u00f4i cam k\u1ebft cung c\u1ea5p th\u00e9p kh\u00f4ng g\u1ec9 ch\u1ea5t l\u01b0\u1ee3ng h\u00e0ng \u0111\u1ea7u cho nhu c\u1ea7u c\u00f4ng nghi\u1ec7p hi\u1ec7u su\u1ea5t cao. N\u1ebfu b\u1ea1n \u0111ang t\u00ecm ki\u1ebfm c\u00e1c gi\u1ea3i ph\u00e1p \u0111\u00e1ng tin c\u1eady cho c\u00e1c d\u1ef1 \u00e1n c\u1ee7a m\u00ecnh, vui l\u00f2ng <a href=\"https:\/\/steelprogroup.com\/vi\">gh\u00e9 th\u0103m trang web c\u1ee7a ch\u00fang t\u00f4i<\/a> ho\u1eb7c <a href=\"https:\/\/steelprogroup.com\/vi\/contact-us\/\">li\u00ean h\u1ec7 v\u1edbi ch\u00fang t\u00f4i<\/a> \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n v\u00e0 b\u00e1o gi\u00e1 c\u1ee5 th\u1ec3.<\/p>","protected":false},"excerpt":{"rendered":"<p>L\u00e0 m\u1ed9t th\u00e0nh vi\u00ean c\u1ee7a d\u00f2ng 400, th\u00e9p kh\u00f4ng g\u1ec9 408 \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi \u0111\u1ed9 b\u1ec1n nhi\u1ec7t \u0111\u1ed9 cao. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd \u0111\u1ec1 c\u1eadp \u0111\u1ebfn [\u2026]<\/p>","protected":false},"author":1,"featured_media":11642,"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-11649","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\/11649","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=11649"}],"version-history":[{"count":0,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/11649\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media\/11642"}],"wp:attachment":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media?parent=11649"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/categories?post=11649"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/tags?post=11649"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}