{"id":20268,"date":"2025-01-10T05:52:00","date_gmt":"2025-01-09T21:52:00","guid":{"rendered":"https:\/\/steelprogroup.com\/?p=20268"},"modified":"2025-01-09T16:34:18","modified_gmt":"2025-01-09T08:34:18","slug":"s7-vs-4140","status":"publish","type":"post","link":"https:\/\/steelprogroup.com\/vi\/tool-steel\/comparison\/s7-vs-4140\/","title":{"rendered":"Th\u00e9p c\u00f4ng c\u1ee5 S7 so v\u1edbi 4140: So s\u00e1nh v\u00e0 s\u1eed d\u1ee5ng"},"content":{"rendered":"<p>Th\u00e9p c\u00f4ng c\u1ee5 S7, \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi \u0111\u1ed9 c\u1ee9ng v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n, l\u00e0 h\u1ee3p kim cacbon cao, crom cao, l\u00fd t\u01b0\u1edfng cho c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi c\u1ea1nh s\u1eafc, ch\u1eb3ng h\u1ea1n nh\u01b0 d\u1ee5ng c\u1ee5 c\u1eaft v\u00e0 khu\u00f4n. Ng\u01b0\u1ee3c l\u1ea1i, th\u00e9p h\u1ee3p kim 4140, h\u1ee3p kim crom-molypden, v\u01b0\u1ee3t tr\u1ed9i trong c\u00e1c \u1ee9ng d\u1ee5ng c\u1ea7n s\u1ef1 c\u00e2n b\u1eb1ng gi\u1eefa \u0111\u1ed9 b\u1ec1n, \u0111\u1ed9 d\u1ebbo dai v\u00e0 kh\u1ea3 n\u0103ng h\u00e0n, ch\u1eb3ng h\u1ea1n nh\u01b0 b\u00e1nh r\u0103ng v\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n c\u1ea5u tr\u00fac.<\/p><p>T\u1ea1i SteelPro Group, ch\u00fang t\u00f4i l\u00e0 nh\u00e0 cung c\u1ea5p to\u00e0n c\u1ea7u cam k\u1ebft cung c\u1ea5p ch\u00ednh x\u00e1c c\u00e1c v\u1eadt li\u1ec7u b\u1ea1n c\u1ea7n, bao g\u1ed3m th\u00e9p c\u00f4ng c\u1ee5 S7 v\u00e0 th\u00e9p 4140, c\u00f9ng v\u1edbi d\u1ecbch v\u1ee5 t\u01b0 v\u1ea5n chuy\u00ean m\u00f4n v\u00e0 giao h\u00e0ng \u0111\u00e1ng tin c\u1eady.<\/p><h2 class=\"wp-block-heading\">S\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh gi\u1eefa th\u00e9p c\u00f4ng c\u1ee5 S7 v\u00e0 4140<\/h2><p>B\u1ea3ng n\u00e0y n\u00eau b\u1eadt nh\u1eefng \u0111i\u1ec3m kh\u00e1c bi\u1ec7t ch\u00ednh gi\u1eefa th\u00e9p c\u00f4ng c\u1ee5 S7 v\u00e0 th\u00e9p h\u1ee3p kim 4140, gi\u00fap b\u1ea1n ch\u1ecdn \u0111\u00fang v\u1eadt li\u1ec7u d\u1ef1a tr\u00ean nhu c\u1ea7u hi\u1ec7u su\u1ea5t c\u1ee5 th\u1ec3.<\/p><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>T\u00e0i s\u1ea3n<\/strong><\/td><td><strong>Th\u00e9p d\u1ee5ng c\u1ee5 S7<\/strong><\/td><td><strong>Th\u00e9p h\u1ee3p kim 4140<\/strong><\/td><\/tr><tr><td>\u0110\u1ed9 c\u1ee9ng (Max HRC)<\/td><td>L\u00ean \u0111\u1ebfn 58 HRC sau khi t\u00f4i luy\u1ec7n<\/td><td>L\u00ean \u0111\u1ebfn 50 HRC sau khi t\u00f4i luy\u1ec7n<\/td><\/tr><tr><td>\u0110\u1ed9 b\u1ec1n<\/td><td>R\u1ea5t cao, ngay c\u1ea3 \u1edf \u0111\u1ed9 c\u1ee9ng cao<\/td><td>Cao, th\u00edch h\u1ee3p cho c\u00e1c b\u1ed9 ph\u1eadn k\u1ebft c\u1ea5u<\/td><\/tr><tr><td>Kh\u1ea3 n\u0103ng ch\u1ed1ng va \u0111\u1eadp<\/td><td>Tuy\u1ec7t v\u1eddi cho c\u00e1c \u1ee9ng d\u1ee5ng ch\u1ecbu va \u0111\u1eadp m\u1ea1nh<\/td><td>T\u1ed1t cho c\u00e1c \u1ee9ng d\u1ee5ng c\u00f3 \u0111\u1ed9 s\u1ed1c v\u1eeba ph\u1ea3i<\/td><\/tr><tr><td>Ch\u1ed1ng m\u00e0i m\u00f2n<\/td><td>Trung b\u00ecnh, t\u1ed1t h\u01a1n 4140<\/td><td>Trung b\u00ecnh, ph\u00f9 h\u1ee3p s\u1eed d\u1ee5ng chung<\/td><\/tr><tr><td>Kh\u1ea3 n\u0103ng gia c\u00f4ng<\/td><td>C\u00f4ng b\u1eb1ng, kh\u00f3 kh\u0103n khi c\u1ee9ng r\u1eafn<\/td><td>T\u1ed1t, d\u1ec5 h\u01a1n trong \u0111i\u1ec1u ki\u1ec7n \u1ee7<\/td><\/tr><tr><td>X\u1eed l\u00fd nhi\u1ec7t<\/td><td>L\u00e0m c\u1ee9ng b\u1eb1ng kh\u00f4ng kh\u00ed, gi\u1ea3m thi\u1ec3u bi\u1ebfn d\u1ea1ng<\/td><td>L\u00e0m ngu\u1ed9i b\u1eb1ng d\u1ea7u, \u0111\u1ed9 m\u00e9o v\u1eeba ph\u1ea3i<\/td><\/tr><tr><td>\u1ee8ng d\u1ee5ng<\/td><td>\u0110\u1ee5c, khu\u00f4n v\u00e0 c\u00e1c c\u00f4ng c\u1ee5 t\u00e1c \u0111\u1ed9ng m\u1ea1nh<\/td><td>Tr\u1ee5c, b\u00e1nh r\u0103ng v\u00e0 c\u00e1c b\u1ed9 ph\u1eadn m\u00e1y m\u00f3c<\/td><\/tr><tr><td>Tr\u1ecb gi\u00e1<\/td><td>Cao h\u01a1n do h\u00e0m l\u01b0\u1ee3ng h\u1ee3p kim<\/td><td>Th\u1ea5p h\u01a1n, c\u00f3 s\u1eb5n r\u1ed9ng r\u00e3i<\/td><\/tr><\/tbody><\/table><\/figure><p>\u0110\u1ed1i v\u1edbi nh\u1eefng ai \u0111ang t\u00ecm ki\u1ebfm c\u00e2u tr\u1ea3 l\u1eddi nhanh v\u1ec1 vi\u1ec7c n\u00ean ch\u1ecdn v\u1eadt li\u1ec7u n\u00e0o, SteelPro Group khuy\u00ean b\u1ea1n:<\/p><ul class=\"wp-block-list\"><li>Ch\u1ecdn <strong>Th\u00e9p d\u1ee5ng c\u1ee5 S7<\/strong> cho c\u00e1c \u1ee9ng d\u1ee5ng y\u00eau c\u1ea7u <strong>kh\u1ea3 n\u0103ng ch\u1ed1ng va \u0111\u1eadp v\u00e0 \u0111\u1ed9 b\u1ec1n cao<\/strong>, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong ch\u1ebf t\u1ea1o d\u1ee5ng c\u1ee5.<\/li>\n\n<li>Ch\u1ecdn <strong>Th\u00e9p h\u1ee3p kim 4140<\/strong> v\u00ec <strong>\u1ee9ng d\u1ee5ng k\u1ebft c\u1ea5u v\u00e0 c\u01a1 kh\u00ed m\u1ee5c \u0111\u00edch chung<\/strong> n\u01a1i c\u1ea7n \u0111\u1ed9 b\u1ec1n, \u0111\u1ed9 d\u1ebbo dai v\u00e0 kh\u1ea3 n\u0103ng gia c\u00f4ng v\u1edbi chi ph\u00ed th\u1ea5p h\u01a1n.<\/li><\/ul><h2 class=\"wp-block-heading\">Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a S7 so v\u1edbi 4140<\/h2><p><strong>Th\u00e9p d\u1ee5ng c\u1ee5 S7<\/strong> ch\u1ee9a c\u00e1c m\u1ee9c \u0111\u1ed9 cao h\u01a1n <strong>silic<\/strong> V\u00e0 <strong>crom<\/strong> so v\u1edbi <strong>Th\u00e9p h\u1ee3p kim 4140<\/strong>, m\u00e0 t\u0103ng c\u01b0\u1eddng c\u1ee7a n\u00f3 <strong>kh\u1ea3 n\u0103ng ch\u1ed1ng s\u1ed1c<\/strong> V\u00e0 <strong>kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n<\/strong>, l\u00e0m cho n\u00f3 l\u00fd t\u01b0\u1edfng cho c\u00e1c c\u00f4ng c\u1ee5 t\u00e1c \u0111\u1ed9ng m\u1ea1nh. Silicon t\u0103ng l\u00ean c\u0169ng c\u1ea3i thi\u1ec7n <strong>\u0111\u1ed9 c\u1ee9ng duy tr\u00ec<\/strong> \u1edf nhi\u1ec7t \u0111\u1ed9 cao.&nbsp;<\/p><p>M\u1eb7t kh\u00e1c, <strong>4140<\/strong> c\u00f3 s\u1ef1 k\u1ebft h\u1ee3p c\u00e2n b\u1eb1ng c\u1ee7a <strong>crom<\/strong> V\u00e0 <strong>molypden<\/strong>, cung c\u1ea5p t\u1ed1t <strong>\u0111\u1ed9 b\u1ec1n<\/strong> V\u00e0 <strong>kh\u1ea3 n\u0103ng l\u00e0m c\u1ee9ng<\/strong>, v\u1edbi h\u00e0m l\u01b0\u1ee3ng carbon th\u1ea5p h\u01a1n \u0111\u1ec3 t\u1ed1t h\u01a1n <strong>t\u00ednh d\u1ebbo dai<\/strong> V\u00e0 <strong>kh\u1ea3 n\u0103ng gia c\u00f4ng<\/strong>.<\/p><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Y\u1ebfu t\u1ed1<\/strong><\/td><td><strong>H\u00e0m l\u01b0\u1ee3ng th\u00e9p c\u00f4ng c\u1ee5 S7 (%)<\/strong><\/td><td><strong>H\u00e0m l\u01b0\u1ee3ng th\u00e9p 4140 (%)<\/strong><\/td><\/tr><tr><td>Cacbon (C)<\/td><td>0.5<\/td><td>0.38 &#8211; 0.43<\/td><\/tr><tr><td>Mangan (Mn)<\/td><td>1<\/td><td>0.75 &#8211; 1.0<\/td><\/tr><tr><td>Crom (Cr)<\/td><td>5.25<\/td><td>0.80 &#8211; 1.1<\/td><\/tr><tr><td>Molip\u0111en (Mo)<\/td><td>1.1<\/td><td>0.15 &#8211; 0.25<\/td><\/tr><tr><td>Vanadi (V)<\/td><td>0.5<\/td><td>&#8211;<\/td><\/tr><tr><td>Silic (Si)<\/td><td>0.3<\/td><td>0.15 &#8211; 0.30<\/td><\/tr><tr><td>Ph\u1ed1t pho (P)<\/td><td>0.03<\/td><td>\u2264 0,035<\/td><\/tr><tr><td>L\u01b0u hu\u1ef3nh (S)<\/td><td>0.03<\/td><td>\u2264 0,040<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">T\u00ednh ch\u1ea5t c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5 S7 so v\u1edbi 4140<\/h2><h3 class=\"wp-block-heading\">\u0110\u1ed9 c\u1ee9ng<\/h3><p>Th\u00e9p c\u00f4ng c\u1ee5 S7 c\u00f3 \u0111\u1ed9 c\u1ee9ng cao h\u01a1n 4140 do h\u00e0m l\u01b0\u1ee3ng silicon v\u00e0 crom cao h\u01a1n. N\u00f3 c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u1ed9 c\u1ee9ng l\u00ean \u0111\u1ebfn 58 HRC, l\u00fd t\u01b0\u1edfng cho c\u00e1c c\u00f4ng c\u1ee5 ch\u1ecbu m\u00e0i m\u00f2n cao nh\u01b0 d\u1ee5ng c\u1ee5 c\u1eaft v\u00e0 khu\u00f4n.<\/p><p>Th\u00e9p 4140 \u0111\u1ea1t \u0111\u1ed9 c\u1ee9ng kho\u1ea3ng 50 HRC, \u0111\u1ee7 cho c\u00e1c \u1ee9ng d\u1ee5ng chung nh\u01b0ng l\u1ea1i h\u1ea1n ch\u1ebf kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n trong c\u00e1c m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t.<\/p><h3 class=\"wp-block-heading\">\u0110\u1ed9 b\u1ec1n<\/h3><p>Silicon v\u00e0 crom trong S7 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng ch\u1ed1ng s\u1ed1c, gi\u00fap s\u1ea3n ph\u1ea9m n\u00e0y c\u1ef1c k\u1ef3 hi\u1ec7u qu\u1ea3 \u0111\u1ed1i v\u1edbi c\u00e1c c\u00f4ng c\u1ee5 t\u00e1c \u0111\u1ed9ng nh\u01b0 m\u00e1y \u0111\u1ed9t v\u00e0 khu\u00f4n \u0111\u00f9n.<\/p><p>Th\u00e9p 4140 thi\u1ebfu c\u00e1c y\u1ebfu t\u1ed1 n\u00e0y v\u00e0 d\u1ec5 b\u1ecb n\u1ee9t h\u01a1n khi ch\u1ecbu nh\u1eefng c\u00fa s\u1ed1c \u0111\u1ed9t ng\u1ed9t, h\u1ea1n ch\u1ebf vi\u1ec7c s\u1eed d\u1ee5ng n\u00f3 cho c\u00e1c \u1ee9ng d\u1ee5ng \u00edt \u0111\u00f2i h\u1ecfi h\u01a1n nh\u01b0 tr\u1ee5c v\u00e0 b\u00e1nh r\u0103ng ch\u1ecbu \u1ee9ng su\u1ea5t \u1ed5n \u0111\u1ecbnh, v\u1eeba ph\u1ea3i.<\/p><h3 class=\"wp-block-heading\">Ch\u1ed1ng m\u00e0i m\u00f2n<\/h3><p>S7 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n t\u1ed1t h\u01a1n nh\u1edd c\u00e1c th\u00e0nh ph\u1ea7n h\u1ee3p kim gi\u00fap t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 b\u1ec1n b\u1ec1 m\u1eb7t.<\/p><p>Th\u00e9p 4140 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n \u1edf m\u1ee9c trung b\u00ecnh nh\u01b0ng kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi m\u00f4i tr\u01b0\u1eddng c\u00f3 \u0111\u1ed9 m\u00e0i m\u00f2n cao, do \u0111\u00f3 ph\u00f9 h\u1ee3p h\u01a1n v\u1edbi c\u00e1c b\u1ed9 ph\u1eadn k\u1ebft c\u1ea5u v\u00e0 m\u00e1y m\u00f3c.<\/p><h3 class=\"wp-block-heading\">Kh\u1ea3 n\u0103ng gia c\u00f4ng<\/h3><p>\u0110\u1ed9 c\u1ee9ng th\u1ea5p h\u01a1n v\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n h\u1ee3p kim \u0111\u01a1n gi\u1ea3n h\u01a1n c\u1ee7a 4140 gi\u00fap d\u1ec5 gia c\u00f4ng h\u01a1n, mang l\u1ea1i hi\u1ec7u qu\u1ea3 t\u1ed1t h\u01a1n trong vi\u1ec7c s\u1ea3n xu\u1ea5t tr\u1ee5c ho\u1eb7c b\u00e1nh r\u0103ng.<\/p><p>S7 c\u00f3 \u0111\u1ed9 c\u1ee9ng cao h\u01a1n n\u00ean kh\u00f3 gia c\u00f4ng h\u01a1n, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u1edf d\u1ea1ng c\u1ee9ng, \u0111\u00f2i h\u1ecfi thi\u1ebft b\u1ecb v\u00e0 quy tr\u00ecnh ti\u00ean ti\u1ebfn h\u01a1n.<\/p><h3 class=\"wp-block-heading\">\u0110\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a x\u1eed l\u00fd nhi\u1ec7t<\/h3><p>T\u00ednh ch\u1ea5t l\u00e0m c\u1ee9ng b\u1eb1ng kh\u00f4ng kh\u00ed c\u1ee7a S7 gi\u00fap gi\u1ea3m thi\u1ec3u bi\u1ebfn d\u1ea1ng, l\u00fd t\u01b0\u1edfng cho c\u00e1c c\u00f4ng c\u1ee5 c\u00f3 \u0111\u1ed9 ch\u00ednh x\u00e1c cao.<\/p><p>4140 \u0111\u01b0\u1ee3c t\u00f4i b\u1eb1ng d\u1ea7u n\u00ean d\u1ec5 b\u1ecb bi\u1ebfn d\u1ea1ng h\u01a1n trong qu\u00e1 tr\u00ecnh t\u00f4i, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn h\u00ecnh d\u1ea1ng cu\u1ed1i c\u00f9ng c\u1ee7a c\u00e1c b\u1ed9 ph\u1eadn ph\u1ee9c t\u1ea1p.<\/p><h3 class=\"wp-block-heading\">Tr\u1ecb gi\u00e1<\/h3><p>Th\u00e0nh ph\u1ea7n \u0111\u01a1n gi\u1ea3n h\u01a1n c\u1ee7a 4140 gi\u00fap gi\u1ea3m chi ph\u00ed, tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn kinh t\u1ebf h\u01a1n cho c\u00e1c th\u00e0nh ph\u1ea7n k\u1ebft c\u1ea5u v\u00e0 c\u01a1 kh\u00ed.<\/p><p>H\u00e0m l\u01b0\u1ee3ng h\u1ee3p kim cao h\u01a1n v\u00e0 c\u00e1c t\u00ednh ch\u1ea5t chuy\u00ean bi\u1ec7t c\u1ee7a S7 l\u00e0m cho n\u00f3 \u0111\u1eaft h\u01a1n, ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c c\u00f4ng c\u1ee5 \u0111\u00f2i h\u1ecfi hi\u1ec7u su\u1ea5t cao h\u01a1n.<\/p><h2 class=\"wp-block-heading\">\u1ee8ng d\u1ee5ng kh\u00e1c nhau c\u1ee7a th\u00e9p S7 v\u00e0 4140<\/h2><p>Trong khi S7 \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng cho c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi \u0111\u1ed9 c\u1ee9ng v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng va \u0111\u1eadp \u0111\u1eb7c bi\u1ec7t th\u00ec 4140 l\u1ea1i cung c\u1ea5p gi\u1ea3i ph\u00e1p linh ho\u1ea1t v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed cho c\u00e1c th\u00e0nh ph\u1ea7n y\u00eau c\u1ea7u \u0111\u1ed9 b\u1ec1n v\u00e0 s\u1ee9c ch\u1ecbu l\u1ef1c t\u1ed1t m\u00e0 kh\u00f4ng c\u1ea7n y\u00eau c\u1ea7u kh\u1eafc nghi\u1ec7t trong m\u00f4i tr\u01b0\u1eddng ch\u1ecbu t\u00e1c \u0111\u1ed9ng m\u1ea1nh.<\/p><h3 class=\"wp-block-heading\">C\u00f4ng d\u1ee5ng c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5 S7<\/h3><ul class=\"wp-block-list\"><li><strong>C\u00f4ng vi\u1ec7c l\u1ea1nh ch\u1ebft<\/strong> V\u00e0 <strong>khu\u00f4n m\u1eabu<\/strong><\/li>\n\n<li><strong>\u0110\u1ea5m<\/strong> V\u00e0 <strong>\u0111\u1ee5c<\/strong> \u0111\u1ec3 h\u00ecnh th\u00e0nh<\/li>\n\n<li><strong>Khu\u00f4n r\u00e8n<\/strong> V\u00e0 <strong>b\u00faa<\/strong><\/li>\n\n<li><strong>Khu\u00f4n \u0111\u00f9n<\/strong> cho nh\u00f4m<\/li>\n\n<li><strong>D\u1ee5ng c\u1ee5 c\u1eaft<\/strong> trong c\u00e1c qu\u00e1 tr\u00ecnh n\u1eb7ng nh\u1ecdc<\/li><\/ul><h3 class=\"wp-block-heading\">4140 C\u00f4ng d\u1ee5ng c\u1ee7a th\u00e9p<\/h3><ul class=\"wp-block-list\"><li><strong>Tr\u1ee5c<\/strong> V\u00e0 <strong>b\u00e1nh r\u0103ng<\/strong> trong m\u00e1y m\u00f3c<\/li>\n\n<li><strong>Tr\u1ee5c<\/strong> V\u00e0 <strong>tr\u1ee5c ch\u00ednh<\/strong> trong \u00f4 t\u00f4<\/li>\n\n<li><strong>Ch\u1ed1t<\/strong> (bu l\u00f4ng, \u0111ai \u1ed1c) trong c\u00e1c th\u00e0nh ph\u1ea7n c\u1ea5u tr\u00fac<\/li>\n\n<li><strong>C\u00f4ng c\u1ee5<\/strong> cho s\u1ea3n xu\u1ea5t chung<\/li>\n\n<li><strong>Th\u00e0nh ph\u1ea7n khung<\/strong> V\u00e0 <strong>h\u1ed7 tr\u1ee3<\/strong> trong x\u00e2y d\u1ef1ng<\/li><\/ul><h2 class=\"wp-block-heading\">Gi\u1ea3i ph\u00e1p chuy\u00ean gia cho nhu c\u1ea7u th\u00e9p S7 v\u00e0 4140<\/h2><p>Cho d\u00f9 b\u1ea1n c\u1ea7n \u0111\u1ed9 b\u1ec1n c\u1ef1c cao c\u1ee7a <a href=\"https:\/\/steelprogroup.com\/vi\/tool-steel\/grades\/s7\/\">Th\u00e9p d\u1ee5ng c\u1ee5 S7<\/a> ho\u1eb7c t\u00ednh linh ho\u1ea1t c\u1ee7a th\u00e9p h\u1ee3p kim 4140, ch\u00fang t\u00f4i \u1edf \u0111\u00e2y \u0111\u1ec3 cung c\u1ea5p h\u01b0\u1edbng d\u1eabn chuy\u00ean m\u00f4n v\u00e0 v\u1eadt li\u1ec7u ch\u1ea5t l\u01b0\u1ee3ng cao ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a b\u1ea1n.<\/p><p>H\u00e3y li\u00ean h\u1ec7 v\u1edbi SteelPro Group \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n chuy\u00ean m\u00f4n v\u00e0 v\u1eadt li\u1ec7u cao c\u1ea5p ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u c\u1ee7a b\u1ea1n. H\u00e3y c\u00f9ng nhau t\u00ecm ra gi\u1ea3i ph\u00e1p l\u00fd t\u01b0\u1edfng mang l\u1ea1i hi\u1ec7u su\u1ea5t v\u00e0 gi\u00e1 tr\u1ecb.<\/p>","protected":false},"excerpt":{"rendered":"<p>S7 tool steel, known for its hardness and wear resistance, is a high carbon, high chromium alloy, ideal for applications [&hellip;]<\/p>","protected":false},"author":12,"featured_media":20262,"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":[4303,4293],"tags":[],"class_list":["post-20268","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-comparison-tool-steel","category-tool-steel"],"acf":[],"_links":{"self":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/20268","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\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/comments?post=20268"}],"version-history":[{"count":0,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/20268\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media\/20262"}],"wp:attachment":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media?parent=20268"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/categories?post=20268"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/tags?post=20268"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}