{"id":11638,"date":"2024-10-17T02:54:00","date_gmt":"2024-10-16T18:54:00","guid":{"rendered":"https:\/\/app11147.cloudwayssites.com\/?p=11638"},"modified":"2024-11-21T11:30:37","modified_gmt":"2024-11-21T03:30:37","slug":"grade-422","status":"publish","type":"post","link":"https:\/\/steelprogroup.com\/vi\/stainless-steel\/grades\/grade-422\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn v\u1ec1 th\u00e9p kh\u00f4ng g\u1ec9 422: T\u00ednh ch\u1ea5t, x\u1eed l\u00fd nhi\u1ec7t v\u00e0 \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p"},"content":{"rendered":"<p>Th\u00e9p kh\u00f4ng g\u1ec9 422 l\u00e0 v\u1eadt li\u1ec7u \u0111\u1eb7c bi\u1ec7t \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t. N\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p nh\u01b0 tua bin v\u00e0 h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, n\u01a1i c\u00e1c b\u1ed9 ph\u1eadn ph\u1ea3i ch\u1ecbu nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u1ee9ng su\u1ea5t kh\u1eafc nghi\u1ec7t.<\/p><p>B\u00e0i vi\u1ebft n\u00e0y s\u1ebd gi\u1ea3i th\u00edch th\u00e9p kh\u00f4ng g\u1ec9 422 l\u00e0 g\u00ec, th\u00e0nh ph\u1ea7n v\u00e0 t\u00ednh ch\u1ea5t c\u1ee7a n\u00f3. Gi\u00fap b\u1ea1n t\u00ecm hi\u1ec3u v\u1ec1 \u01b0u \u0111i\u1ec3m, nh\u01b0\u1ee3c \u0111i\u1ec3m v\u00e0 \u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn c\u1ee7a n\u00f3.<\/p><h2 class=\"wp-block-heading\">Th\u00e9p kh\u00f4ng g\u1ec9 422 l\u00e0 g\u00ec?<\/h2><p>Th\u00e9p kh\u00f4ng g\u1ec9 422 l\u00e0 h\u1ee3p kim \u0111\u01b0\u1ee3c t\u1ea1o th\u00e0nh t\u1eeb kho\u1ea3ng 12% crom, c\u00f9ng v\u1edbi c\u00e1c nguy\u00ean t\u1ed1 nh\u01b0 molypden v\u00e0 vanadi, v\u00e0 ph\u1ea7n c\u00f2n l\u1ea1i l\u00e0 s\u1eaft. N\u00f3 l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 martensitic, \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t tuy\u1ec7t v\u1eddi. N\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p nh\u01b0 h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 v\u00e0 ph\u00e1t \u0111i\u1ec7n, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong c\u00e1c th\u00e0nh ph\u1ea7n tuabin.<\/p><h2 class=\"wp-block-heading\">T\u01b0\u01a1ng \u0111\u01b0\u01a1ng th\u00e9p kh\u00f4ng g\u1ec9 422<\/h2><p>Th\u00e9p kh\u00f4ng g\u1ec9 422 \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi nhi\u1ec1u t\u00ean g\u1ecdi ti\u00eau chu\u1ea9n v\u00e0 c\u1ea5p \u0111\u1ed9 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng \u1edf nhi\u1ec1u khu v\u1ef1c v\u00e0 ti\u00eau chu\u1ea9n kh\u00e1c nhau.<\/p><h3 class=\"wp-block-heading\">Ti\u00eau chu\u1ea9n<\/h3><ul class=\"wp-block-list\"><li>UNS S42200<\/li>\n\n<li>Ti\u00eau chu\u1ea9n ASTM A276, A493<\/li>\n\n<li>Ti\u00eau chu\u1ea9n ASTM A276, A493<\/li>\n\n<li>AMS 5655<\/li><\/ul><h3 class=\"wp-block-heading\">\u0110i\u1ec3m t\u01b0\u01a1ng \u0111\u01b0\u01a1ng<\/h3><ul class=\"wp-block-list\"><li>EN X20CrMoV12-1<\/li>\n\n<li>Ti\u00eau chu\u1ea9n DIN 1.4935<\/li><\/ul><h2 class=\"wp-block-heading\">Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 422<\/h2><figure class=\"wp-block-table\"><table><tbody><tr><td>Y\u1ebfu t\u1ed1<\/td><td>Fe<\/td><td>C<\/td><td>Cr<\/td><td>T\u00f4i<\/td><td>V<\/td><td>Ni<\/td><td>Mn<\/td><td>Si<\/td><td>P<\/td><td>S<\/td><\/tr><tr><td>N\u1ed9i dung<\/td><td>S\u1ef1 c\u00e2n b\u1eb1ng<\/td><td>0,20\u20130,25<\/td><td>11.50\u201313.50<\/td><td>0,90\u20131,25<\/td><td>0,20\u20130,30<\/td><td>0,50\u20131,00<\/td><td>\u22641,00<\/td><td>\u22641,00<\/td><td>\u22640,025<\/td><td>\u22640,025<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">422 T\u00ednh ch\u1ea5t c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9<\/h2><h3 class=\"wp-block-heading\">T\u00ednh ch\u1ea5t v\u1eadt l\u00fd c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 422<\/h3><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>T\u00e0i s\u1ea3n<\/strong><\/td><td><strong>Gi\u00e1 tr\u1ecb s\u1ed1 li\u1ec7u<\/strong><\/td><td><strong>Gi\u00e1 tr\u1ecb \u0110\u1ebf qu\u1ed1c<\/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>1450\u20131510 \u00b0C<\/td><td>2642\u20132750 \u00b0F<\/td><\/tr><tr><td>\u0110\u1ed9 d\u1eabn nhi\u1ec7t<\/td><td>24,9 W\/m\u00b7K<\/td><td>14,4 BTU\u00b7in\/gi\u1edd\u00b7ft\u00b2\u00b7\u00b0F<\/td><\/tr><tr><td>S\u1ef1 gi\u00e3n n\u1edf v\u00ec nhi\u1ec7t<\/td><td>10,3 \u00b5m\/m\u00b7K<\/td><td>5,72 \u00d7 10\u207b\u2076 in\/in\u00b7\u00b0F<\/td><\/tr><tr><td>\u0110\u1ed9 d\u1eabn \u0111i\u1ec7n<\/td><td>1,4 \u00d7 10\u2076 L\/m<\/td><td>Kho\u1ea3ng 2,4% IACS<\/td><\/tr><tr><td>T\u00ednh ch\u1ea5t t\u1eeb t\u00ednh<\/td><td>T\u1eeb t\u00ednh<\/td><td>T\u1eeb t\u00ednh<\/td><\/tr><\/tbody><\/table><\/figure><h3 class=\"wp-block-heading\">T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 422<\/h3><figure class=\"wp-block-table\"><table><tbody><tr><td>T\u00e0i s\u1ea3n<\/td><td>Gi\u00e1 tr\u1ecb \u0111i\u1ec3n h\u00ecnh<\/td><\/tr><tr><td>\u0110\u1ed9 b\u1ec1n k\u00e9o<\/td><td>515 MPa (75 ksi)<\/td><\/tr><tr><td>S\u1ee9c ch\u1ecbu l\u1ef1c<\/td><td>205 MPa (30 ksi)<\/td><\/tr><tr><td>\u0110\u1ed9 c\u1ee9ng Brinell<\/td><td>201 HB<\/td><\/tr><tr><td>\u0110\u1ed9 c\u1ee9ng Rockwell<\/td><td>\u2264 20HRC<\/td><\/tr><tr><td>\u0110\u1ed9 c\u1ee9ng Vickers<\/td><td>200 HV<\/td><\/tr><tr><td>\u0110\u1ed9 gi\u00e3n d\u00e0i<\/td><td>40%<\/td><\/tr><tr><td>M\u00f4 \u0111un \u0111\u00e0n h\u1ed3i<\/td><td>193 GPa (28 \u00d7 10\u2076 psi)<\/td><\/tr><\/tbody><\/table><\/figure><h3 class=\"wp-block-heading\">T\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 422<\/h3><ul class=\"wp-block-list\"><li>Kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t<\/li><\/ul><p>Lo\u1ea1i th\u00e9p n\u00e0y ho\u1ea1t \u0111\u1ed9ng t\u1ed1t trong m\u00f4i tr\u01b0\u1eddng nhi\u1ec7t \u0111\u1ed9 cao, ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 l\u00ean \u0111\u1ebfn 650\u00b0C. \u0110i\u1ec1u n\u00e0y l\u00e0 do th\u00e0nh ph\u1ea7n \u0111\u1eb7c bi\u1ec7t c\u1ee7a n\u00f3, bao g\u1ed3m c\u00e1c nguy\u00ean t\u1ed1 nh\u01b0 crom, molypden v\u00e0 vanadi. C\u00e1c nguy\u00ean t\u1ed1 n\u00e0y gi\u00fap v\u1eadt li\u1ec7u ch\u1ed1ng l\u1ea1i s\u1ef1 m\u1ec1m h\u00f3a ho\u1eb7c y\u1ebfu \u0111i khi ti\u1ebfp x\u00fac v\u1edbi nhi\u1ec7t \u0111\u1ed9 c\u1ef1c cao.<\/p><ul class=\"wp-block-list\"><li>C\u00f3 th\u1ec3 x\u1eed l\u00fd nhi\u1ec7t<\/li><\/ul><p>V\u1eadt li\u1ec7u n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c gia c\u01b0\u1eddng th\u00f4ng qua qu\u00e1 tr\u00ecnh x\u1eed l\u00fd nhi\u1ec7t. X\u1eed l\u00fd nhi\u1ec7t cho ph\u00e9p th\u00e9p tr\u1edf n\u00ean c\u1ee9ng h\u01a1n v\u00e0 b\u1ec1n h\u01a1n, ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c b\u1ed9 ph\u1eadn ph\u1ea3i ch\u1ecbu t\u1ea3i tr\u1ecdng c\u01a1 h\u1ecdc cao.<\/p><h2 class=\"wp-block-heading\">C\u00e1c d\u1ea1ng kh\u00e1c nhau c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 422<\/h2><p>Th\u00e9p kh\u00f4ng g\u1ec9 422 c\u00f3 nhi\u1ec1u d\u1ea1ng kh\u00e1c nhau \u0111\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c nhu c\u1ea7u c\u00f4ng nghi\u1ec7p kh\u00e1c nhau. Sau \u0111\u00e2y l\u00e0 c\u00e1c d\u1ea1ng ph\u1ed5 bi\u1ebfn.<\/p><h3 class=\"wp-block-heading\">Thanh v\u00e0 thanh th\u00e9p<\/h3><p>Th\u00e9p kh\u00f4ng g\u1ec9 422 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t d\u01b0\u1edbi d\u1ea1ng h\u00ecnh tr\u1ee5 \u0111\u1eb7c.<\/p><h3 class=\"wp-block-heading\">T\u1ea5m v\u00e0 T\u1ea5m<\/h3><p>Th\u00e9p t\u1ea5m l\u00e0 nh\u1eefng mi\u1ebfng th\u00e9p m\u1ecfng, ph\u1eb3ng, trong khi th\u00e9p t\u1ea5m d\u00e0y h\u01a1n v\u00e0 ch\u1eafc ch\u1eafn h\u01a1n.<\/p><h3 class=\"wp-block-heading\">\u1ed0ng v\u00e0 \u1ed0ng d\u1eabn<\/h3><p>\u1ed0ng v\u00e0 \u1ed1ng th\u00e9p kh\u00f4ng g\u1ec9 422 l\u00e0 nh\u1eefng h\u00ecnh tr\u1ee5 r\u1ed7ng c\u00f3 \u0111\u01b0\u1eddng k\u00ednh v\u00e0 \u0111\u1ed9 d\u00e0y th\u00e0nh \u1ed1ng kh\u00e1c nhau.<\/p><h3 class=\"wp-block-heading\">R\u00e8n<\/h3><p>S\u1ea3n ph\u1ea9m r\u00e8n l\u00e0 nh\u1eefng m\u1ea3nh th\u00e9p kh\u00f4ng g\u1ec9 422 \u0111\u01b0\u1ee3c \u0111\u1ecbnh h\u00ecnh b\u1eb1ng c\u00e1ch \u00e9p ho\u1eb7c \u0111\u1eadp, th\u01b0\u1eddng l\u00e0 khi c\u00f2n n\u00f3ng.<\/p><h3 class=\"wp-block-heading\">D\u00e2y \u0111i\u1ec7n<\/h3><p>Th\u00e9p kh\u00f4ng g\u1ec9 422 c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c k\u00e9o th\u00e0nh d\u1ea1ng d\u00e2y, t\u1eeb d\u1ea1ng s\u1ee3i m\u1ecfng, m\u1ec1m d\u1ebbo \u0111\u1ebfn d\u1ea1ng d\u00e0y h\u01a1n, c\u1ee9ng h\u01a1n.<\/p><h3 class=\"wp-block-heading\">M\u1eb7t b\u00edch<\/h3><p>M\u1eb7t b\u00edch l\u00e0 b\u1ed9 ph\u1eadn h\u00ecnh tr\u00f2n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 k\u1ebft n\u1ed1i \u0111\u01b0\u1eddng \u1ed1ng ho\u1eb7c c\u00e1c b\u1ed9 ph\u1eadn c\u01a1 kh\u00ed.<\/p><h2 class=\"wp-block-heading\">\u1ee8ng d\u1ee5ng c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 422<\/h2><h3 class=\"wp-block-heading\">C\u00e1nh Tua-bin<\/h3><p>\u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c tua bin kh\u00ed v\u00e0 h\u01a1i n\u01b0\u1edbc khi c\u1ea7n \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t cao.<\/p><h3 class=\"wp-block-heading\">Linh ki\u1ec7n \u0111\u1ed9ng c\u01a1 h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5<\/h3><p>Th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c b\u1ed9 ph\u1eadn \u0111\u1ed9ng c\u01a1 nh\u01b0 tr\u1ee5c v\u00e0 \u0111\u0129a ph\u1ea3i ch\u1ecbu nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u00e1p l\u1ef1c cao.<\/p><h3 class=\"wp-block-heading\">Ch\u1ed1t ch\u1ecbu nhi\u1ec7t \u0111\u1ed9 cao<\/h3><p>Th\u00edch h\u1ee3p cho bu l\u00f4ng, \u1ed1c v\u00edt v\u00e0 c\u00e1c v\u1eadt c\u1ed1 \u0111\u1ecbnh kh\u00e1c trong m\u00f4i tr\u01b0\u1eddng n\u00f3ng, \u0111\u00f2i h\u1ecfi \u0111\u1ed9 b\u1ec1n cao.<\/p><h3 class=\"wp-block-heading\">Thi\u1ebft b\u1ecb nh\u00e0 m\u00e1y \u0111i\u1ec7n<\/h3><p>\u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng trong n\u1ed3i h\u01a1i, van v\u00e0 c\u00e1c thi\u1ebft b\u1ecb nhi\u1ec7t \u0111\u1ed9 cao kh\u00e1c trong h\u1ec7 th\u1ed1ng ph\u00e1t \u0111i\u1ec7n.<\/p><h3 class=\"wp-block-heading\">Linh ki\u1ec7n tuabin kh\u00ed<\/h3><p>\u0110\u01b0\u1ee3c t\u00ecm th\u1ea5y trong c\u00e1c th\u00e0nh ph\u1ea7n c\u1ee7a tua bin kh\u00ed c\u00f4ng nghi\u1ec7p do kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t v\u00e0 \u1ee9ng su\u1ea5t c\u01a1 h\u1ecdc.<\/p><h2 class=\"wp-block-heading\">\u01afu \u0111i\u1ec3m c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 422 l\u00e0 g\u00ec?<\/h2><h3 class=\"wp-block-heading\">\u0110\u1ed9 b\u1ec1n cao<\/h3><p>Th\u00e9p kh\u00f4ng g\u1ec9 422 \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi \u0111\u1ed9 b\u1ec1n tuy\u1ec7t v\u1eddi, \u0111\u1eb7c bi\u1ec7t l\u00e0 sau khi x\u1eed l\u00fd nhi\u1ec7t. H\u00e0m l\u01b0\u1ee3ng crom cao gi\u00fap c\u1ea3i thi\u1ec7n \u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 b\u1ec1n c\u1ee7a n\u00f3. \u0110i\u1ec1u n\u00e0y l\u00e0m cho n\u00f3 tr\u1edf n\u00ean l\u00fd t\u01b0\u1edfng cho c\u00e1c \u1ee9ng d\u1ee5ng c\u1ea7n ch\u1ecbu \u0111\u01b0\u1ee3c \u1ee9ng su\u1ea5t cao.<\/p><h3 class=\"wp-block-heading\">T\u00ednh ch\u1ea5t ch\u1ecbu \u1ee9ng su\u1ea5t v\u00e0 \u0111\u1ed9 bi\u1ebfn d\u1ea1ng t\u1ed1t<\/h3><p>Th\u00e9p kh\u00f4ng g\u1ec9 422 duy tr\u00ec c\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc trong th\u1eddi gian d\u00e0i, ngay c\u1ea3 d\u01b0\u1edbi \u1ee9ng su\u1ea5t cao \u1edf nhi\u1ec7t \u0111\u1ed9 cao. \u0110\u00e2y l\u00e0 l\u00fd do t\u1ea1i sao n\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong tua bin v\u00e0 c\u00e1c m\u00e1y m\u00f3c kh\u00e1c ho\u1ea1t \u0111\u1ed9ng trong \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u1ee9ng su\u1ea5t cao li\u00ean t\u1ee5c.<\/p><h3 class=\"wp-block-heading\">Kh\u1ea3 n\u0103ng ch\u1ed1ng m\u1ecfi t\u1ed1t<\/h3><p>Th\u00e9p kh\u00f4ng g\u1ec9 422 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t trong c\u00e1c \u1ee9ng d\u1ee5ng m\u00e0 v\u1eadt li\u1ec7u ph\u1ea3i ch\u1ecbu \u1ee9ng su\u1ea5t l\u1eb7p l\u1ea1i ho\u1eb7c tu\u1ea7n ho\u00e0n. \u0110i\u1ec1u n\u00e0y quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c th\u00e0nh ph\u1ea7n th\u01b0\u1eddng xuy\u00ean thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 v\u00e0 t\u1ea3i.<\/p><h3 class=\"wp-block-heading\">C\u00e1c h\u00ecnh th\u1ee9c \u0111a d\u1ea1ng<\/h3><p>Th\u00e9p kh\u00f4ng g\u1ec9 422 c\u00f3 nhi\u1ec1u d\u1ea1ng, bao g\u1ed3m thanh, que, t\u1ea5m, t\u1ea5m v\u00e0 r\u00e8n. T\u00ednh linh ho\u1ea1t n\u00e0y gi\u00fap n\u00f3 th\u00edch \u1ee9ng v\u1edbi c\u00e1c quy tr\u00ecnh s\u1ea3n xu\u1ea5t v\u00e0 \u1ee9ng d\u1ee5ng kh\u00e1c nhau.<\/p><h2 class=\"wp-block-heading\">Nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 422 l\u00e0 g\u00ec?<\/h2><p>Sau \u0111\u00e2y l\u00e0 nh\u1eefng nh\u01b0\u1ee3c \u0111i\u1ec3m v\u00e0 h\u1ea1n ch\u1ebf ch\u00ednh c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 422:<\/p><h3 class=\"wp-block-heading\">Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n th\u1ea5p h\u01a1n<\/h3><p>Th\u00e9p kh\u00f4ng g\u1ec9 422 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n k\u00e9m h\u01a1n so v\u1edbi th\u00e9p kh\u00f4ng g\u1ec9 austenit nh\u01b0 304 ho\u1eb7c 316. Th\u00e9p kh\u00f4ng g\u1ec9 422 kh\u00f4ng l\u00fd t\u01b0\u1edfng \u0111\u1ec3 s\u1eed d\u1ee5ng trong m\u00f4i tr\u01b0\u1eddng c\u00f3 t\u00ednh \u0103n m\u00f2n cao ho\u1eb7c m\u00f4i tr\u01b0\u1eddng bi\u1ec3n.<\/p><h3 class=\"wp-block-heading\">\u0110\u1ed9 gi\u00f2n trong m\u1ed9t s\u1ed1 \u0111i\u1ec1u ki\u1ec7n nh\u1ea5t \u0111\u1ecbnh<\/h3><p>Khi kh\u00f4ng \u0111\u01b0\u1ee3c x\u1eed l\u00fd nhi\u1ec7t \u0111\u00fang c\u00e1ch, th\u00e9p kh\u00f4ng g\u1ec9 422 c\u00f3 th\u1ec3 tr\u1edf n\u00ean gi\u00f2n. \u0110i\u1ec1u n\u00e0y khi\u1ebfn n\u00f3 d\u1ec5 b\u1ecb n\u1ee9t h\u01a1n khi ch\u1ecbu \u1ee9ng su\u1ea5t, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong m\u00f4i tr\u01b0\u1eddng nhi\u1ec7t \u0111\u1ed9 th\u1ea5p.<\/p><h3 class=\"wp-block-heading\">Kh\u1ea3 n\u0103ng gia c\u00f4ng kh\u00f3 kh\u0103n<\/h3><p>Sau khi c\u1ee9ng l\u1ea1i, th\u00e9p kh\u00f4ng g\u1ec9 422 tr\u1edf n\u00ean kh\u00f3 gia c\u00f4ng. C\u1ea7n c\u00f3 c\u00e1c c\u00f4ng c\u1ee5 v\u00e0 k\u1ef9 thu\u1eadt \u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 c\u1eaft ho\u1eb7c \u0111\u1ecbnh h\u00ecnh, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 l\u00e0m t\u0103ng chi ph\u00ed s\u1ea3n xu\u1ea5t.<\/p><h3 class=\"wp-block-heading\">Kh\u1ea3 n\u0103ng h\u00e0n h\u1ea1n ch\u1ebf<\/h3><p>Do h\u00e0m l\u01b0\u1ee3ng carbon cao, th\u00e9p kh\u00f4ng g\u1ec9 422 kh\u00f3 h\u00e0n h\u01a1n so v\u1edbi c\u00e1c lo\u1ea1i kh\u00e1c. \u0110\u1ec3 kh\u00f4i ph\u1ee5c c\u00e1c \u0111\u1eb7c t\u00ednh c\u1ee7a n\u00f3, th\u01b0\u1eddng ph\u1ea3i x\u1eed l\u00fd nhi\u1ec7t sau khi h\u00e0n, l\u00e0m t\u0103ng th\u00eam \u0111\u1ed9 ph\u1ee9c t\u1ea1p cho qu\u00e1 tr\u00ecnh ch\u1ebf t\u1ea1o.<\/p><h3 class=\"wp-block-heading\">Chi ph\u00ed cao<\/h3><p>Do c\u00e1c th\u00e0nh ph\u1ea7n h\u1ee3p kim v\u00e0 quy tr\u00ecnh s\u1ea3n xu\u1ea5t \u0111\u1eb7c bi\u1ec7t, th\u00e9p kh\u00f4ng g\u1ec9 422 \u0111\u1eaft h\u01a1n c\u00e1c lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 th\u00f4ng th\u01b0\u1eddng nh\u01b0 304 ho\u1eb7c 430.<\/p><h2 class=\"wp-block-heading\">Ph\u01b0\u01a1ng ph\u00e1p ch\u1ebf bi\u1ebfn th\u00e9p kh\u00f4ng g\u1ec9 422<\/h2><h3 class=\"wp-block-heading\">R\u00e8n<\/h3><p>B\u01b0\u1edbc \u0111\u1ea7u ti\u00ean trong qu\u00e1 tr\u00ecnh \u0111\u1ecbnh h\u00ecnh th\u00e9p kh\u00f4ng g\u1ec9 422 l\u00e0 r\u00e8n. Th\u00e9p \u0111\u01b0\u1ee3c nung \u1edf nhi\u1ec7t \u0111\u1ed9 1900-2150\u00b0F (1040-1175\u00b0C) \u0111\u1ec3 r\u00e8n v\u00e0 sau \u0111\u00f3 ph\u1ea3i l\u00e0m ngu\u1ed9i t\u1eeb t\u1eeb \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng. R\u00e8n gi\u00fap tinh ch\u1ec9nh c\u1ea5u tr\u00fac h\u1ea1t, chu\u1ea9n b\u1ecb v\u1eadt li\u1ec7u cho qu\u00e1 tr\u00ecnh x\u1eed l\u00fd ti\u1ebfp theo.<\/p><h3 class=\"wp-block-heading\">L\u00e0m vi\u1ec7c n\u00f3ng<\/h3><p>N\u1ebfu c\u1ea7n \u0111\u1ecbnh h\u00ecnh th\u00eam, qu\u00e1 tr\u00ecnh gia c\u00f4ng n\u00f3ng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n sau khi r\u00e8n. Th\u00e9p \u0111\u01b0\u1ee3c nung l\u1ea1i \u1edf nhi\u1ec7t \u0111\u1ed9 2100-2150\u00b0F (1149-1177\u00b0C). Trong giai \u0111o\u1ea1n n\u00e0y, v\u1eadt li\u1ec7u c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1ecbnh h\u00ecnh th\u00e0nh c\u00e1c h\u00ecnh d\u1ea1ng c\u1ee5 th\u1ec3 trong khi v\u1eabn duy tr\u00ec c\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc c\u1ee7a n\u00f3.<\/p><h3 class=\"wp-block-heading\">L\u00e0m ngu\u1ed9i (n\u1ebfu c\u1ea7n)<\/h3><p>C\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n gia c\u00f4ng ngu\u1ed9i nh\u1ecf \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh nh\u1ecf v\u1ec1 h\u00ecnh d\u1ea1ng ho\u1eb7c b\u1ec1 m\u1eb7t ho\u00e0n thi\u1ec7n. B\u01b0\u1edbc n\u00e0y th\u01b0\u1eddng di\u1ec5n ra sau gia c\u00f4ng n\u00f3ng, nh\u01b0ng n\u00f3 b\u1ecb h\u1ea1n ch\u1ebf v\u00ec th\u00e9p kh\u00f4ng g\u1ec9 422 th\u01b0\u1eddng kh\u00f4ng \u0111\u01b0\u1ee3c gia c\u00f4ng ngu\u1ed9i.<\/p><p>B\u1ea5t k\u1ef3 qu\u00e1 tr\u00ecnh gia c\u00f4ng ngu\u1ed9i n\u00e0o th\u01b0\u1eddng \u0111\u01b0\u1ee3c ti\u1ebfp n\u1ed1i b\u1eb1ng qu\u00e1 tr\u00ecnh \u1ee7 \u0111\u1ec3 gi\u1ea3m \u1ee9ng su\u1ea5t.<\/p><h3 class=\"wp-block-heading\">X\u1eed l\u00fd nhi\u1ec7t<\/h3><h4 class=\"wp-block-heading\">\u1ee6<\/h4><ul class=\"wp-block-list\"><li>V\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c nung n\u00f3ng \u0111\u1ebfn 1350-1430\u00b0F (730-780\u00b0C) v\u00e0 gi\u1eef trong v\u00e0i gi\u1edd, sau \u0111\u00f3 l\u00e0m m\u00e1t b\u1eb1ng kh\u00f4ng kh\u00ed. Qu\u00e1 tr\u00ecnh n\u00e0y l\u00e0m m\u1ec1m v\u1eadt li\u1ec7u, c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng gia c\u00f4ng v\u00e0 tinh ch\u1ec9nh c\u1ea5u tr\u00fac h\u1ea1t.<\/li>\n\n<li>Qu\u00e1 tr\u00ecnh \u1ee7 gi\u00fap \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u1ea5u tr\u00fac martensitic, mang l\u1ea1i s\u1ef1 c\u00e2n b\u1eb1ng t\u1ed1t gi\u1eefa \u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 d\u1ebbo dai.<\/li><\/ul><h4 class=\"wp-block-heading\">L\u00e0m c\u1ee9ng<\/h4><ul class=\"wp-block-list\"><li>\u0110\u1ec3 l\u00e0m c\u1ee9ng th\u00e9p kh\u00f4ng g\u1ec9 422, th\u00e9p \u0111\u01b0\u1ee3c nung \u0111\u1ebfn 1900\u00b0F (1040\u00b0C), ng\u00e2m trong m\u1ed9t th\u1eddi gian, sau \u0111\u00f3 l\u00e0m ngu\u1ed9i trong d\u1ea7u ho\u1eb7c kh\u00f4ng kh\u00ed. Qu\u00e1 tr\u00ecnh n\u00e0y bi\u1ebfn \u0111\u1ed5i th\u00e9p th\u00e0nh c\u1ea5u tr\u00fac martensitic, t\u0103ng \u0111\u1ed9 c\u1ee9ng v\u00e0 \u0111\u1ed9 b\u1ec1n k\u00e9o.<\/li>\n\n<li>\u0110\u00f4i khi, ph\u01b0\u01a1ng ph\u00e1p l\u00e0m ngu\u1ed9i martensit \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 tr\u00e1nh bi\u1ebfn d\u1ea1ng \u1edf c\u00e1c b\u1ed9 ph\u1eadn ph\u1ee9c t\u1ea1p, bao g\u1ed3m vi\u1ec7c l\u00e0m ngu\u1ed9i \u1edf nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n m\u1ed9t ch\u00fat so v\u1edbi \u0111i\u1ec3m b\u1eaft \u0111\u1ea7u c\u1ee7a martensit.<\/li><\/ul><h4 class=\"wp-block-heading\">L\u00e0m ngu\u1ed9i<\/h4><ul class=\"wp-block-list\"><li>L\u00e0m n\u00f3ng l\u1ea1i v\u1eadt li\u1ec7u \u1edf nhi\u1ec7t \u0111\u1ed9 t\u1eeb 1100\u00b0F \u0111\u1ebfn 1400\u00b0F (590\u00b0C \u0111\u1ebfn 760\u00b0C) sau khi \u0111\u00e3 \u0111\u01b0\u1ee3c l\u00e0m c\u1ee9ng. Th\u00e9p \u0111\u01b0\u1ee3c gi\u1eef \u1edf nhi\u1ec7t \u0111\u1ed9 n\u00e0y \u0111\u1ec3 gi\u1ea3m \u0111\u1ed9 gi\u00f2n v\u00e0 c\u1ea3i thi\u1ec7n \u0111\u1ed9 d\u1ebbo dai. Sau \u0111\u00f3, n\u00f3 \u0111\u01b0\u1ee3c l\u00e0m ngu\u1ed9i xu\u1ed1ng nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng.<\/li>\n\n<li>Nhi\u1ec7t \u0111\u1ed9 t\u00f4i th\u1ea5p h\u01a1n s\u1ebd t\u1ea1o ra \u0111\u1ed9 c\u1ee9ng cao h\u01a1n, trong khi nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n s\u1ebd c\u1ea3i thi\u1ec7n \u0111\u1ed9 d\u1ebbo dai nh\u01b0ng l\u1ea1i l\u00e0m gi\u1ea3m m\u1ed9t ph\u1ea7n \u0111\u1ed9 c\u1ee9ng.<\/li><\/ul><h4 class=\"wp-block-heading\">Gi\u1ea3m c\u0103ng th\u1eb3ng<\/h4><ul class=\"wp-block-list\"><li>Qu\u00e1 tr\u00ecnh n\u00e0y bao g\u1ed3m vi\u1ec7c nung th\u00e9p \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 v\u1eeba ph\u1ea3i, th\u01b0\u1eddng l\u00e0 kho\u1ea3ng 1100\u00b0F (590\u00b0C), \u0111\u1ec3 gi\u1ea3i ph\u00f3ng \u1ee9ng su\u1ea5t b\u00ean trong c\u00f3 th\u1ec3 ph\u00e1t sinh trong qu\u00e1 tr\u00ecnh gia c\u00f4ng ho\u1eb7c c\u00e1c qu\u00e1 tr\u00ecnh ch\u1ebf t\u1ea1o kh\u00e1c.&nbsp;<\/li>\n\n<li>N\u00f3 \u0111\u1ea3m b\u1ea3o t\u00ednh \u1ed5n \u0111\u1ecbnh v\u1ec1 k\u00edch th\u01b0\u1edbc v\u00e0 gi\u00fap ng\u0103n ng\u1eeba n\u1ee9t trong qu\u00e1 tr\u00ecnh x\u1eed l\u00fd ti\u1ebfp theo.<\/li><\/ul><h3 class=\"wp-block-heading\">Gia c\u00f4ng<\/h3><p>Gia c\u00f4ng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n sau khi x\u1eed l\u00fd nhi\u1ec7t. Th\u00e9p kh\u00f4ng g\u1ec9 422 c\u00f3 th\u1ec3 gia c\u00f4ng b\u1eb1ng c\u00e1c c\u00f4ng c\u1ee5 coban t\u1ed1c \u0111\u1ed9 cao v\u00e0 ki\u1ec3m so\u00e1t c\u1ea9n th\u1eadn \u0111\u1ec3 tr\u00e1nh m\u00e0i m\u00f2n c\u00f4ng c\u1ee5. Gia c\u00f4ng t\u1ed1t nh\u1ea5t \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf tr\u1ea1ng th\u00e1i \u1ee7 ho\u1eb7c sau khi x\u1eed l\u00fd l\u00e0m m\u1ec1m.<\/p><h3 class=\"wp-block-heading\">H\u00e0n<\/h3><p><a href=\"https:\/\/steelprogroup.com\/vi\/stainless-steel\/welding\/\">H\u00e0n<\/a> l\u00e0 m\u1ed9t trong nh\u1eefng b\u01b0\u1edbc cu\u1ed1i c\u00f9ng do nguy c\u01a1 thay \u0111\u1ed5i t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a th\u00e9p. C\u1ea7n ph\u1ea3i nung n\u00f3ng tr\u01b0\u1edbc \u1edf nhi\u1ec7t \u0111\u1ed9 1100-1400\u00b0F (590-760\u00b0C) \u0111\u1ec3 tr\u00e1nh n\u1ee9t v\u00e0 c\u1ea7n x\u1eed l\u00fd nhi\u1ec7t sau khi h\u00e0n \u0111\u1ec3 ph\u1ee5c h\u1ed3i \u0111\u1ed9 b\u1ec1n v\u00e0 gi\u1ea3m \u1ee9ng su\u1ea5t.<\/p><h2 class=\"wp-block-heading\">\u0110\u1ed9 c\u1ee9ng c\u1ee7a AISI 422 l\u00e0 bao nhi\u00eau?<\/h2><p>\u0110\u1ed9 c\u1ee9ng c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 AISI 422 th\u01b0\u1eddng l\u00e0 Rockwell C 21 \u0111\u1ebfn 25 khi \u1ee7. Sau khi l\u00e0m c\u1ee9ng v\u00e0 ram, n\u00f3 c\u00f3 th\u1ec3 \u0111\u1ea1t Rockwell C 35 \u0111\u1ebfn 45, t\u00f9y thu\u1ed9c v\u00e0o x\u1eed l\u00fd nhi\u1ec7t.<\/p><h2 class=\"wp-block-heading\">Th\u00e9p kh\u00f4ng g\u1ec9 422 so v\u1edbi th\u00e9p kh\u00f4ng g\u1ec9 304 nh\u01b0 th\u1ebf n\u00e0o?<\/h2><p>Th\u00e9p kh\u00f4ng g\u1ec9 422 c\u00f3 \u0111\u1ed9 b\u1ec1n cao h\u01a1n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t t\u1ed1t h\u01a1n so v\u1edbi <a href=\"https:\/\/steelprogroup.com\/vi\/stainless-steel\/grades\/grade-304\/\">th\u00e9p kh\u00f4ng g\u1ec9 304<\/a> nh\u01b0ng c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n th\u1ea5p h\u01a1n, ph\u00f9 h\u1ee3p h\u01a1n v\u1edbi m\u00f4i tr\u01b0\u1eddng c\u00f3 nhi\u1ec7t \u0111\u1ed9 cao, \u1ee9ng su\u1ea5t cao.<\/p><h2 class=\"wp-block-heading\">Nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng t\u1ed1i \u0111a c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 422 l\u00e0 bao nhi\u00eau?<\/h2><p>Th\u00e9p kh\u00f4ng g\u1ec9 422 c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c \u1edf nhi\u1ec7t \u0111\u1ed9 l\u00ean t\u1edbi 1200\u00b0F (650\u00b0C).<\/p><h2 class=\"wp-block-heading\">B\u1ea3n t\u00f3m t\u1eaft<\/h2><p>Th\u00e9p kh\u00f4ng g\u1ec9 422 l\u00e0 h\u1ee3p kim ch\u1ecbu nhi\u1ec7t, c\u00f3 \u0111\u1ed9 b\u1ec1n cao, th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t nh\u01b0 h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 v\u00e0 ph\u00e1t \u0111i\u1ec7n. Lo\u1ea1i th\u00e9p n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c b\u1ed9 ph\u1eadn tuabin, \u1ed1c v\u00edt v\u00e0 b\u1ed9 ph\u1eadn \u0111\u1ed9ng c\u01a1 do kh\u1ea3 n\u0103ng ho\u1ea1t \u0111\u1ed9ng d\u01b0\u1edbi \u00e1p l\u1ef1c.&nbsp;<\/p><p>T\u1ea1i Steel Pro Group, ch\u00fang t\u00f4i cam k\u1ebft cung c\u1ea5p v\u1eadt li\u1ec7u 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 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>Th\u00e9p kh\u00f4ng g\u1ec9 422 l\u00e0 m\u1ed9t v\u1eadt li\u1ec7u \u0111\u1eb7c bi\u1ec7t \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t. N\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p [\u2026]<\/p>","protected":false},"author":1,"featured_media":11644,"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-11638","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\/11638","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=11638"}],"version-history":[{"count":0,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/11638\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media\/11644"}],"wp:attachment":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media?parent=11638"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/categories?post=11638"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/tags?post=11638"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}