{"id":20139,"date":"2024-12-30T09:40:00","date_gmt":"2024-12-30T01:40:00","guid":{"rendered":"https:\/\/steelprogroup.com\/?p=20139"},"modified":"2025-01-14T11:49:48","modified_gmt":"2025-01-14T03:49:48","slug":"p20","status":"publish","type":"post","link":"https:\/\/steelprogroup.com\/vi\/tool-steel\/grades\/p20\/","title":{"rendered":"Th\u00e9p c\u00f4ng c\u1ee5 AISI P20 Th\u00e9p khu\u00f4n | 3Cr2Mo | 1.2311"},"content":{"rendered":"<p class=\"wp-block-paragraph\">T\u1ea1i SteelPro Group, ch\u00fang t\u00f4i l\u00e0 nh\u00e0 cung c\u1ea5p \u0111\u00e1ng tin c\u1eady c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5 P20 ch\u1ea5t l\u01b0\u1ee3ng cao. \u0110\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng gia c\u00f4ng, c\u00e1c s\u1ea3n ph\u1ea9m P20 c\u1ee7a ch\u00fang t\u00f4i ho\u00e0n h\u1ea3o cho vi\u1ec7c l\u00e0m khu\u00f4n v\u00e0 gia c\u00f4ng. V\u1edbi dung sai ch\u00ednh x\u00e1c v\u00e0 k\u00edch th\u01b0\u1edbc t\u00f9y ch\u1ec9nh c\u00f3 s\u1eb5n, ch\u00fang t\u00f4i cung c\u1ea5p c\u00e1c gi\u1ea3i ph\u00e1p \u0111\u00e1ng tin c\u1eady \u0111\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u th\u00e9p c\u1ee7a b\u1ea1n.<\/p><h2 class=\"wp-block-heading\">Th\u00e9p c\u00f4ng c\u1ee5 P20 l\u00e0 g\u00ec?<\/h2><p class=\"wp-block-paragraph\">Th\u00e9p c\u00f4ng c\u1ee5 P20 l\u00e0 kim lo\u1ea1i h\u1ee3p kim th\u1ea5p, linh ho\u1ea1t \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn v\u00ec \u0111\u1ed9 b\u1ec1n tuy\u1ec7t v\u1eddi \u1edf m\u1ee9c \u0111\u1ed9 c\u01b0\u1eddng \u0111\u1ed9 v\u1eeba ph\u1ea3i. H\u00e0m l\u01b0\u1ee3ng crom v\u00e0 niken c\u1ee7a n\u00f3 l\u00e0m t\u0103ng c\u1ea3 \u0111\u1ed9 d\u1ebbo dai v\u00e0 \u0111\u1ed9 c\u1ee9ng. P20 c\u0169ng cung c\u1ea5p kh\u1ea3 n\u0103ng gia c\u00f4ng v\u00e0 \u0111\u00e1nh b\u00f3ng tuy\u1ec7t v\u1eddi.&nbsp;<\/p><p class=\"wp-block-paragraph\">Th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c khoang khu\u00f4n phun, d\u1ee5ng c\u1ee5 v\u00e0 khu\u00f4n \u0111\u00fac k\u1ebdm, th\u00e9p SteelPro Group P20 th\u01b0\u1eddng \u0111\u01b0\u1ee3c cung c\u1ea5p \u1edf d\u1ea1ng \u0111\u00e3 \u0111\u01b0\u1ee3c l\u00e0m c\u1ee9ng tr\u01b0\u1edbc \u1edf kho\u1ea3ng 300 HBW. Th\u00e9p c\u00f3 th\u1ec3 tr\u1ea3i qua c\u00e1c qu\u00e1 tr\u00ecnh x\u1eed l\u00fd b\u1ed5 sung nh\u01b0 th\u1ea5m nit\u01a1 ho\u1eb7c th\u1ea5m cacbon \u0111\u1ec3 c\u1ea3i thi\u1ec7n c\u00e1c \u0111\u1eb7c t\u00ednh c\u1ee7a n\u00f3.<\/p><h2 class=\"wp-block-heading\">C\u00e1i g\u00ec t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi th\u00e9p P20?<\/h2><p class=\"wp-block-paragraph\">Th\u00e9p L2 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi 3Cr2Mo trong ti\u00eau chu\u1ea9n GB\/T 1299 c\u1ee7a Trung Qu\u1ed1c, P20 trong ti\u00eau chu\u1ea9n ASTM A681 v\u00e0 1.2311 trong ti\u00eau chu\u1ea9n DIN EN ISO 4957.<\/p><h2 class=\"wp-block-heading\">T\u00ednh ch\u1ea5t ch\u00ednh c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5 P20<\/h2><ul class=\"wp-block-list\"><li><strong>\u0110\u1ed9 b\u1ec1n cao<\/strong>:Kh\u1ea3 n\u0103ng ch\u1ed1ng n\u1ee9t v\u00e0 va \u0111\u1eadp tuy\u1ec7t v\u1eddi, \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 b\u1ec1n khi ch\u1ecbu \u00e1p l\u1ef1c.<\/li>\n\n<li><strong>Kh\u1ea3 n\u0103ng gia c\u00f4ng tuy\u1ec7t v\u1eddi<\/strong>: D\u1ec5 gia c\u00f4ng, cho ph\u00e9p x\u1eed l\u00fd hi\u1ec7u qu\u1ea3 c\u00e1c b\u1ed9 ph\u1eadn ph\u1ee9c t\u1ea1p.<\/li>\n\n<li><strong>\u0110\u00e3 \u0111\u01b0\u1ee3c l\u00e0m c\u1ee9ng tr\u01b0\u1edbc<\/strong>:Ch\u00fang t\u00f4i cung c\u1ea5p \u1edf m\u1ee9c 300 HBW, gi\u1ea3m thi\u1ec3u nhu c\u1ea7u x\u1eed l\u00fd nhi\u1ec7t th\u00eam.<\/li>\n\n<li><strong>Kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n v\u1eeba ph\u1ea3i<\/strong>: C\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n t\u1ed1t m\u00e0 kh\u00f4ng qu\u00e1 c\u1ee9ng.<\/li>\n\n<li><strong>\u0110\u1ed9 \u1ed5n \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc<\/strong>: Duy tr\u00ec h\u00ecnh d\u1ea1ng v\u00e0 k\u00edch th\u01b0\u1edbc trong qu\u00e1 tr\u00ecnh gia c\u00f4ng v\u00e0 x\u1eed l\u00fd nhi\u1ec7t.<\/li><\/ul><h2 class=\"wp-block-heading\">P20 S\u1ea3n ph\u1ea9m th\u00e9p c\u00f4ng c\u1ee5 h\u00ecnh th\u1ee9c v\u00e0 ph\u1ea1m vi cung c\u1ea5p<\/h2><p class=\"wp-block-paragraph\">SteelPro Group cung c\u1ea5p v\u1eadt li\u1ec7u th\u00e9p c\u00f4ng c\u1ee5 P20 cao c\u1ea5p tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n to\u00e0n c\u1ea7u. V\u1edbi c\u00e1c bi\u1ec7n ph\u00e1p ki\u1ec3m so\u00e1t dung sai nghi\u00eam ng\u1eb7t, ch\u00fang t\u00f4i \u0111\u1ea3m b\u1ea3o v\u1eadt li\u1ec7u \u0111\u00e1ng tin c\u1eady v\u00e0 ch\u00ednh x\u00e1c. Ch\u00fang t\u00f4i c\u0169ng cung c\u1ea5p c\u00e1c k\u00edch th\u01b0\u1edbc t\u00f9y ch\u1ec9nh \u0111\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u ri\u00eang c\u1ee7a b\u1ea1n.<\/p><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>M\u1eabu s\u1ea3n ph\u1ea9m<\/strong><\/td><td><strong>Ph\u1ea1m vi k\u00edch th\u01b0\u1edbc (H\u1ec7 m\u00e9t)<\/strong><\/td><td><strong>Ph\u1ea1m vi k\u00edch th\u01b0\u1edbc (Anh)<\/strong><\/td><\/tr><tr><td>T\u1ea5m th\u00e9p c\u00f4ng c\u1ee5<\/td><td>\u0110\u1ed9 d\u00e0y: 10 mm \u0111\u1ebfn 300 mmChi\u1ec1u r\u1ed9ng: 100 mm \u0111\u1ebfn 2500 mmChi\u1ec1u d\u00e0i: 200 mm \u0111\u1ebfn 6000 mm<\/td><td>\u0110\u1ed9 d\u00e0y: 0,4 in \u0111\u1ebfn 12 in Chi\u1ec1u r\u1ed9ng: 4 in \u0111\u1ebfn 100 in Chi\u1ec1u d\u00e0i: 8 in \u0111\u1ebfn 236 in<\/td><\/tr><tr><td>Thanh th\u00e9p c\u00f4ng c\u1ee5<\/td><td>Thanh tr\u00f2n: \u0110\u01b0\u1eddng k\u00ednh t\u1eeb 20 mm \u0111\u1ebfn 500 mmThanh vu\u00f4ng: Chi\u1ec1u d\u00e0i c\u1ea1nh t\u1eeb 20 mm \u0111\u1ebfn 300 mmChi\u1ec1u d\u00e0i: 3000 mm \u0111\u1ebfn 6000 mm<\/td><td>Thanh tr\u00f2n: \u0110\u01b0\u1eddng k\u00ednh t\u1eeb 0,8 inch \u0111\u1ebfn 20 inchThanh vu\u00f4ng: Chi\u1ec1u d\u00e0i c\u1ea1nh t\u1eeb 0,8 inch \u0111\u1ebfn 12 inchChi\u1ec1u d\u00e0i: T\u1eeb 118 inch \u0111\u1ebfn 236 inch<\/td><\/tr><tr><td>Kh\u1ed1i th\u00e9p c\u00f4ng c\u1ee5<\/td><td>Chi\u1ec1u r\u1ed9ng\/Chi\u1ec1u d\u00e0i: 100 mm \u0111\u1ebfn 1200 mmChi\u1ec1u cao\/\u0110\u1ed9 d\u00e0y: 50 mm \u0111\u1ebfn 400 mm<\/td><td>Chi\u1ec1u r\u1ed9ng\/Chi\u1ec1u d\u00e0i: 4 in \u0111\u1ebfn 47 inChi\u1ec1u cao\/\u0110\u1ed9 d\u00e0y: 2 in \u0111\u1ebfn 16 in<\/td><\/tr><tr><td>R\u00e8n th\u00e9p c\u00f4ng c\u1ee5<\/td><td>K\u00edch th\u01b0\u1edbc t\u00f9y ch\u1ec9nh d\u1ef1a tr\u00ean y\u00eau c\u1ea7u<\/td><td>K\u00edch th\u01b0\u1edbc t\u00f9y ch\u1ec9nh d\u1ef1a tr\u00ean y\u00eau c\u1ea7u<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5 P20<\/h2><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Y\u1ebfu t\u1ed1<\/strong><\/td><td><strong>Th\u00e0nh ph\u1ea7n (%)<\/strong><\/td><\/tr><tr><td>Cacbon (C)<\/td><td>0.28 &#8211; 0.40<\/td><\/tr><tr><td>Crom (Cr)<\/td><td>1.4 &#8211; 2.0<\/td><\/tr><tr><td>S\u1eaft (Fe)<\/td><td>97, nh\u01b0 s\u1ef1 c\u00e2n b\u1eb1ng<\/td><\/tr><tr><td>Mangan (Mn)<\/td><td>0.60 &#8211; 1.0<\/td><\/tr><tr><td>Molip\u0111en (Mo)<\/td><td>0.30 &#8211; 0.55<\/td><\/tr><tr><td>Ph\u1ed1t pho (P)<\/td><td>\u2264 0,030<\/td><\/tr><tr><td>Silic (Si)<\/td><td>0.20 &#8211; 0.80<\/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 v\u1eadt l\u00fd c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5 P20<\/h2><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>7,85 g\/cc<\/td><td>0,284 lb\/in\u00b3<\/td><\/tr><tr><td>H\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t<\/td><td>12,8 \u00b5m\/m\u00b7\u00b0C (\u1edf 20,0\u00b0C)<\/td><td>7,10 \u00b5in\/in\u00b7\u00b0F (\u1edf 68,0\u00b0F)<\/td><\/tr><tr><td>\u0110\u1ed9 d\u1eabn nhi\u1ec7t<\/td><td>29,0 \u2013 34,0 W\/m\u00b7K<\/td><td>201 \u2013 236 BTU\u00b7in\/gi\u1edd\u00b7ft\u00b2\u00b7\u00b0F<\/td><\/tr><tr><td>Nhi\u1ec7t dung ri\u00eang<\/td><td>460 J\/kg\u00b7K<\/td><td>0,110 BTU\/lb\u00b7\u00b0F<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5 P20<\/h2><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>\u0110\u1ed9 c\u1ee9ng, Brinell<\/td><td>300<\/td><td>300<\/td><\/tr><tr><td>\u0110\u1ed9 c\u1ee9ng, Rockwell C<\/td><td>30<\/td><td>30<\/td><\/tr><tr><td>\u0110\u1ed9 b\u1ec1n k\u00e9o, T\u1ed1i \u0111a<\/td><td>965 \u2013 1030MPa<\/td><td>140000 \u2013 150000 psi<\/td><\/tr><tr><td>\u0110\u1ed9 b\u1ec1n k\u00e9o, \u0110\u1ed9 b\u1ec1n k\u00e9o<\/td><td>827 \u2013 862MPa<\/td><td>120000 \u2013 125000 psi<\/td><\/tr><tr><td>\u0110\u1ed9 gi\u00e3n d\u00e0i khi \u0111\u1ee9t (t\u00ednh b\u1eb1ng 50 mm \/2\u2033)<\/td><td>20 %<\/td><td>20 %<\/td><\/tr><tr><td>M\u00f4 \u0111un \u0111\u00e0n h\u1ed3i<\/td><td>205 GPa<\/td><td>29700 ksi<\/td><\/tr><tr><td>S\u1ee9c m\u1ea1nh n\u00e9n<\/td><td>862MPa<\/td><td>125000 psi<\/td><\/tr><tr><td>T\u00e1c \u0111\u1ed9ng Charpy (V-Notch)<\/td><td>27,1 \u2013 33,9 J<\/td><td>20,0 \u2013 25,0 ft-lb<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">X\u1eed l\u00fd nhi\u1ec7t th\u00e9p c\u00f4ng c\u1ee5 P20<\/h2><p class=\"wp-block-paragraph\">Ch\u00fang t\u00f4i cung c\u1ea5p th\u00e9p c\u00f4ng c\u1ee5 P20 \u1edf tr\u1ea1ng th\u00e1i \u1ee7, \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng gia c\u00f4ng tuy\u1ec7t v\u1eddi v\u00e0 \u1ee9ng su\u1ea5t d\u01b0 t\u1ed1i thi\u1ec3u. \u0110i\u1ec1u n\u00e0y l\u00e0m cho P20 c\u1ee7a ch\u00fang t\u00f4i tr\u1edf n\u00ean l\u00fd t\u01b0\u1edfng cho c\u00e1c \u1ee9ng d\u1ee5ng l\u00e0m khu\u00f4n v\u00e0 gia c\u00f4ng, mang l\u1ea1i hi\u1ec7u su\u1ea5t \u0111\u00e1ng tin c\u1eady v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c trong m\u1ecdi d\u1ef1 \u00e1n.<\/p><h3 class=\"wp-block-heading\">R\u00e8n<\/h3><p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi th\u00e9p c\u00f4ng c\u1ee5 P20, ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 r\u00e8n l\u00fd t\u01b0\u1edfng l\u00e0 t\u1eeb 1149\u00b0C (2100\u00b0F) \u0111\u1ebfn 1260\u00b0C (2300\u00b0F). Sau khi r\u00e8n, \u0111\u1ec3 th\u00e9p ngu\u1ed9i t\u1eeb t\u1eeb \u0111\u1ec3 tr\u00e1nh n\u1ee9t.<\/p><h3 class=\"wp-block-heading\">\u1ee6<\/h3><p class=\"wp-block-paragraph\">\u0110\u1ec3 \u1ee7 P20, nung th\u00e9p \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 trong kho\u1ea3ng 760-788\u00b0C (1400-1450\u00b0F). Duy tr\u00ec nhi\u1ec7t \u0111\u1ed9 trong 1 gi\u1edd cho m\u1ed7i 25,4mm (1 inch) \u0111\u1ed9 d\u00e0y, v\u1edbi th\u1eddi gian t\u1ed1i thi\u1ec3u l\u00e0 2 gi\u1edd. Sau khi gi\u1eef, \u0111\u1ec3 th\u00e9p ngu\u1ed9i d\u1ea7n trong l\u00f2, v\u1edbi t\u1ed1c \u0111\u1ed9 kh\u00f4ng nhanh h\u01a1n 4\u00b0C (40\u00b0F) m\u1ed7i gi\u1edd, cho \u0111\u1ebfn khi \u0111\u1ea1t \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng.<\/p><h3 class=\"wp-block-heading\">Gi\u1ea3m c\u0103ng th\u1eb3ng<\/h3><p class=\"wp-block-paragraph\">Sau khi gia c\u00f4ng ho\u1eb7c trong qu\u00e1 tr\u00ecnh b\u1ea3o d\u01b0\u1ee1ng kh\u00f4ng li\u00ean t\u1ee5c, h\u00e3y gia nhi\u1ec7t P20 \u0111\u1ebfn 482\u00b0C (900\u00b0F). Duy tr\u00ec nhi\u1ec7t \u0111\u1ed9 trong 1 gi\u1edd cho m\u1ed7i 25,4mm (1 inch) \u0111\u1ed9 d\u00e0y, sau \u0111\u00f3 \u0111\u1ec3 v\u1eadt li\u1ec7u ngu\u1ed9i trong kh\u00f4ng kh\u00ed \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng. Quy tr\u00ecnh n\u00e0y gi\u00fap gi\u1ea3m \u1ee9ng su\u1ea5t b\u00ean trong v\u00e0 t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a th\u00e9p v\u1ec1 m\u1eb7t k\u00edch th\u01b0\u1edbc.<\/p><h3 class=\"wp-block-heading\">L\u00e0m c\u1ee9ng<\/h3><ul class=\"wp-block-list\"><li><strong>L\u00e0m n\u00f3ng tr\u01b0\u1edbc<\/strong>: L\u00e0m n\u00f3ng P20 \u1edf t\u1ed1c \u0111\u1ed9 kh\u00f4ng qu\u00e1 222\u00b0C (400\u00b0F) m\u1ed9t gi\u1edd \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 t\u1eeb 621-677\u00b0C (1150-1250\u00b0F). \u0110\u1ec3 th\u00e9p c\u00e2n b\u1eb1ng \u1edf nhi\u1ec7t \u0111\u1ed9 n\u00e0y.<\/li>\n\n<li><strong>Austenit h\u00f3a<\/strong>: L\u00e0m n\u00f3ng th\u00e9p nhanh \u0111\u1ebfn 843\u00b0C (1550\u00b0F) sau khi l\u00e0m n\u00f3ng tr\u01b0\u1edbc. Ng\u00e2m trong 30 ph\u00fat cho \u0111\u1ed9 d\u00e0y ban \u0111\u1ea7u l\u00e0 25,4mm (1 inch), v\u00e0 ng\u00e2m th\u00eam 15 ph\u00fat cho m\u1ed7i inch.<\/li>\n\n<li><strong>L\u00e0m ngu\u1ed9i<\/strong>: S\u1eed d\u1ee5ng kh\u00ed n\u00e9n ho\u1eb7c l\u00e0m ngu\u1ed9i b\u1eb1ng d\u1ea7u ng\u1eaft qu\u00e3ng \u0111\u1ec3 l\u00e0m ngu\u1ed9i th\u00e9p xu\u1ed1ng 66-51\u00b0C (150-125\u00b0F). N\u1ebfu l\u00e0m ngu\u1ed9i b\u1eb1ng d\u1ea7u, l\u00e0m ngu\u1ed9i cho \u0111\u1ebfn khi th\u00e9p chuy\u1ec3n sang m\u00e0u \u0111en \u1edf kho\u1ea3ng 482\u00b0C (900\u00b0F), sau \u0111\u00f3 ho\u00e0n t\u1ea5t qu\u00e1 tr\u00ecnh l\u00e0m ngu\u1ed9i trong kh\u00f4ng kh\u00ed t\u0129nh.<\/li><\/ul><h3 class=\"wp-block-heading\">L\u00e0m ngu\u1ed9i<\/h3><p class=\"wp-block-paragraph\">Qu\u00e1 tr\u00ecnh t\u00f4i luy\u1ec7n ph\u1ea3i \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n ngay sau khi t\u00f4i. L\u00e0m n\u00f3ng P20 \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 trong kho\u1ea3ng 482-593\u00b0C (900-1100\u00b0F) trong 1 gi\u1edd cho m\u1ed7i 25,4mm (1 inch) \u0111\u1ed9 d\u00e0y, v\u1edbi th\u1eddi gian gi\u1eef t\u1ed1i thi\u1ec3u l\u00e0 2 gi\u1edd. Sau khi t\u00f4i luy\u1ec7n, l\u00e0m ngu\u1ed9i th\u00e9p trong kh\u00f4ng kh\u00ed \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng.<\/p><h2 class=\"wp-block-heading\">\u1ee8ng d\u1ee5ng th\u00e9p c\u00f4ng c\u1ee5 P20<\/h2><p class=\"wp-block-paragraph\">Th\u00e9p c\u00f4ng c\u1ee5 P20 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho:<\/p><ul class=\"wp-block-list\"><li>Khu\u00f4n \u00e9p phun<\/li>\n\n<li>D\u1ee5ng c\u1ee5 th\u1ed5i khu\u00f4n<\/li>\n\n<li>Khu\u00f4n n\u00e9n<\/li>\n\n<li>Khu\u00f4n \u0111\u00fac khu\u00f4n<\/li>\n\n<li>Khu\u00f4n \u0111\u1ecbnh h\u00ecnh<\/li>\n\n<li>Ch\u1ed1t l\u00f5i v\u00e0 ch\u00e8n<\/li><\/ul><h2 class=\"wp-block-heading\">Th\u00e9p 4140 so v\u1edbi Th\u00e9p P20<\/h2><p class=\"wp-block-paragraph\">Trong khi 4140 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng ch\u1ecbu \u1ee9ng su\u1ea5t cao th\u00ec P20 ph\u00f9 h\u1ee3p h\u01a1n v\u1edbi c\u00e1c d\u1ee5ng c\u1ee5 c\u00f3 y\u00eau c\u1ea7u \u0111\u1ed9 b\u1ec1n trung b\u00ecnh.<\/p><p class=\"wp-block-paragraph\">Th\u00e9p 4140 c\u00f3 \u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 c\u1ee9ng cao h\u01a1n do c\u00f3 h\u00e0m l\u01b0\u1ee3ng crom v\u00e0 molypden, ph\u00f9 h\u1ee3p cho c\u00e1c \u1ee9ng d\u1ee5ng ch\u1ecbu t\u1ea3i n\u1eb7ng nh\u01b0 b\u00e1nh r\u0103ng v\u00e0 tr\u1ee5c. P20, th\u00e9p c\u00f4ng c\u1ee5 \u0111\u01b0\u1ee3c t\u00f4i tr\u01b0\u1edbc, l\u00fd t\u01b0\u1edfng \u0111\u1ec3 l\u00e0m khu\u00f4n, c\u00f3 kh\u1ea3 n\u0103ng gia c\u00f4ng v\u00e0 \u0111\u1ed9 b\u1ec1n t\u1ed1t cho khu\u00f4n \u00e9p nh\u1ef1a v\u00e0 \u0111\u00fac khu\u00f4n.&nbsp;<\/p><h2 class=\"wp-block-heading\">Th\u00e9p P20 so v\u1edbi th\u00e9p A2<\/h2><p class=\"wp-block-paragraph\">P20 t\u1ed1t h\u01a1n cho vi\u1ec7c \u0111\u00fac nh\u1ef1a, trong khi <a href=\"https:\/\/steelprogroup.com\/vi\/tool-steel\/grades\/a2\/\">Th\u00e9p c\u00f4ng c\u1ee5 A2<\/a> n\u1ed5i tr\u1ed9i v\u1ec1 d\u1ee5ng c\u1ee5 c\u00f3 \u0111\u1ed9 ch\u00ednh x\u00e1c cao, ch\u1ecbu m\u00e0i m\u00f2n cao.<\/p><p class=\"wp-block-paragraph\">Th\u00e9p P20 \u0111\u01b0\u1ee3c t\u00f4i tr\u01b0\u1edbc v\u00e0 ch\u1ee7 y\u1ebfu d\u00f9ng \u0111\u1ec3 l\u00e0m khu\u00f4n, c\u00f3 kh\u1ea3 n\u0103ng gia c\u00f4ng v\u00e0 \u0111\u1ed9 b\u1ec1n t\u1ed1t. Th\u00e9p A2, v\u1edbi h\u00e0m l\u01b0\u1ee3ng cacbon cao h\u01a1n, b\u1ec1n h\u01a1n v\u00e0 ch\u1ed1ng m\u00e0i m\u00f2n t\u1ed1t h\u01a1n, ph\u00f9 h\u1ee3p \u0111\u1ec3 l\u00e0m d\u1ee5ng c\u1ee5 c\u1eaft, khu\u00f4n v\u00e0 \u0111\u1ed9t.&nbsp;<\/p><h2 class=\"wp-block-heading\">Th\u00e9p H13 so v\u1edbi th\u00e9p P20<\/h2><p class=\"wp-block-paragraph\"><a href=\"https:\/\/steelprogroup.com\/vi\/tool-steel\/h13\/\">T\u1ea5m th\u00e9p H13<\/a> t\u1ed1t h\u01a1n cho c\u00e1c \u1ee9ng d\u1ee5ng nhi\u1ec7t \u0111\u1ed9 cao, trong khi P20 l\u00fd t\u01b0\u1edfng cho c\u00e1c d\u1ee5ng c\u1ee5 c\u00f3 \u0111\u1ed9 b\u1ec1n trung b\u00ecnh.<\/p><p class=\"wp-block-paragraph\">H13 l\u00e0 th\u00e9p c\u00f4ng c\u1ee5 ch\u1ecbu nhi\u1ec7t \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi kh\u1ea3 n\u0103ng ch\u1ed1ng n\u1ee9t v\u00e0 m\u00e0i m\u00f2n do nhi\u1ec7t \u1edf nhi\u1ec7t \u0111\u1ed9 cao, l\u00e0m cho n\u00f3 tr\u1edf n\u00ean ho\u00e0n h\u1ea3o cho c\u00e1c c\u00f4ng c\u1ee5 \u0111\u00fac khu\u00f4n v\u00e0 r\u00e8n n\u00f3ng. Ng\u01b0\u1ee3c l\u1ea1i, P20 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c c\u00f4ng c\u1ee5 gia c\u00f4ng ngu\u1ed9i nh\u01b0 khu\u00f4n nh\u1ef1a v\u00e0 \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 cao v\u1ec1 kh\u1ea3 n\u0103ng gia c\u00f4ng v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh v\u1ec1 k\u00edch th\u01b0\u1edbc.&nbsp;<\/p><h2 class=\"wp-block-heading\">Gi\u1ea3i ph\u00e1p th\u00e9p c\u00f4ng c\u1ee5 P20 t\u00f9y ch\u1ec9nh cho nhu c\u1ea7u c\u1ee7a b\u1ea1n<\/h2><p class=\"wp-block-paragraph\">N\u1ebfu b\u1ea1n \u0111ang t\u00ecm ki\u1ebfm th\u00e9p c\u00f4ng c\u1ee5 P20 \u0111\u00e1ng tin c\u1eady, SteelPro Group \u1edf \u0111\u00e2y \u0111\u1ec3 gi\u00fap b\u1ea1n. Ch\u00fang t\u00f4i cung c\u1ea5p nhi\u1ec1u lo\u1ea1i s\u1ea3n ph\u1ea9m, bao g\u1ed3m t\u1ea5m v\u00e0 thanh, v\u1edbi k\u00edch th\u01b0\u1edbc t\u00f9y ch\u1ec9nh c\u00f3 s\u1eb5n \u0111\u1ec3 \u0111\u00e1p \u1ee9ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a b\u1ea1n. C\u00e1c d\u1ecbch v\u1ee5 c\u1ee7a ch\u00fang t\u00f4i bao g\u1ed3m c\u1eaft, m\u00e0i v\u00e0 c\u00e1c t\u00f9y ch\u1ecdn gia c\u00f4ng kh\u00e1c \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o gi\u1ea3i ph\u00e1p ho\u00e0n h\u1ea3o cho d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n.&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>T\u1ea1i SteelPro Group, ch\u00fang t\u00f4i l\u00e0 nh\u00e0 cung c\u1ea5p \u0111\u00e1ng tin c\u1eady c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5 P20 ch\u1ea5t l\u01b0\u1ee3ng cao. \u0110\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng gia c\u00f4ng, [\u2026]<\/p>","protected":false},"author":12,"featured_media":20128,"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":[4294,4293],"tags":[],"class_list":["post-20139","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-grades-tool-steel","category-tool-steel"],"acf":[],"_links":{"self":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/20139","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=20139"}],"version-history":[{"count":0,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/20139\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media\/20128"}],"wp:attachment":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media?parent=20139"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/categories?post=20139"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/tags?post=20139"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}