{"id":20187,"date":"2025-01-04T08:30:00","date_gmt":"2025-01-04T00:30:00","guid":{"rendered":"https:\/\/steelprogroup.com\/?p=20187"},"modified":"2025-01-14T10:34:47","modified_gmt":"2025-01-14T02:34:47","slug":"8620","status":"publish","type":"post","link":"https:\/\/steelprogroup.com\/vi\/tool-steel\/grades\/8620\/","title":{"rendered":"Th\u00e9p 8620 | G86200 | A50202: T\u00ednh ch\u1ea5t v\u00e0 s\u1ea3n ph\u1ea9m"},"content":{"rendered":"<p>SteelPro Group cung c\u1ea5p 8620 thanh th\u00e9p \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n khu v\u1ef1c nh\u01b0 ASTM, ISO v\u00e0 GB. S\u1ea3n ph\u1ea9m c\u1ee7a ch\u00fang t\u00f4i \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t v\u1edbi c\u00e1c bi\u1ec7n ph\u00e1p ki\u1ec3m so\u00e1t dung sai nghi\u00eam ng\u1eb7t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 t\u00ednh nh\u1ea5t qu\u00e1n.<\/p><h2 class=\"wp-block-heading\">Th\u00e9p c\u00f4ng c\u1ee5 8620 l\u00e0 g\u00ec?<\/h2><p>Th\u00e9p 8620 l\u00e0 th\u00e9p th\u1ea5m cacbon h\u1ee3p kim th\u1ea5p, c\u00f3 \u0111\u1ed9 c\u1ee9ng trung b\u00ecnh v\u1edbi niken, crom v\u00e0 molypden. N\u00f3 cung c\u1ea5p \u0111\u1ed9 c\u1ee9ng b\u1ec1 m\u1eb7t v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n tuy\u1ec7t v\u1eddi. N\u00f3 cung c\u1ea5p \u0111\u1ed9 b\u1ec1n l\u00f5i v\u00e0 \u0111\u1ed9 b\u1ec1n b\u1ec1 m\u1eb7t m\u1ea1nh m\u1ebd, l\u00fd t\u01b0\u1edfng cho c\u00e1c th\u00e0nh ph\u1ea7n c\u00f3 \u0111\u1ed9 b\u1ec1n trung b\u00ecnh nh\u01b0 tr\u1ee5c cam, b\u00e1nh r\u0103ng v\u00e0 \u1ed5 tr\u1ee5c.&nbsp;<\/p><p>H\u00e0m l\u01b0\u1ee3ng niken cao c\u1ee7a n\u00f3 c\u1ea3i thi\u1ec7n \u0111\u1ed9 d\u1ebbo dai so v\u1edbi c\u00e1c lo\u1ea1i th\u00e9p th\u1ea5m cacbon kh\u00e1c. M\u1eb7c d\u00f9 n\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1eb1ng th\u1ea5m nit\u01a1 \u0111\u1ec3 t\u0103ng th\u00eam \u0111\u1ed9 c\u1ee9ng, nh\u01b0ng n\u00f3 kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng t\u1ed1t v\u1edbi qu\u00e1 tr\u00ecnh t\u00f4i b\u1eb1ng ng\u1ecdn l\u1eeda ho\u1eb7c c\u1ea3m \u1ee9ng v\u00ec h\u00e0m l\u01b0\u1ee3ng cacbon t\u01b0\u01a1ng \u0111\u1ed1i th\u1ea5p.<\/p><h2 class=\"wp-block-heading\">Th\u00e9p 8620 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi c\u00e1i g\u00ec?<\/h2><p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 b\u1ea3ng ti\u00eau chu\u1ea9n c\u00f3 li\u00ean quan v\u00e0 c\u00e1c c\u1ea5p t\u01b0\u01a1ng \u0111\u01b0\u01a1ng cho th\u00e9p 8620:<\/p><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Qu\u1ed1c gia<\/strong><\/td><td><strong>Ti\u00eau chu\u1ea9n<\/strong><\/td><td><strong>\u0110i\u1ec3m t\u01b0\u01a1ng \u0111\u01b0\u01a1ng<\/strong><\/td><\/tr><tr><td>Trung Qu\u1ed1c<\/td><td>Ti\u00eau chu\u1ea9n GB\/T3077<\/td><td>20CrNiMo\/A50202<\/td><\/tr><tr><td>Nh\u1eadt B\u1ea3n<\/td><td>Ti\u00eau chu\u1ea9n JIS G4053<\/td><td>SNCM220<\/td><\/tr><tr><td>Hoa K\u1ef3<\/td><td>ASTM A29\/A29M, ASTM A1040, SAE J 404<\/td><td>(G)8620<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">8620 Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u00e0 k\u00edch th\u01b0\u1edbc s\u1ea3n ph\u1ea9m th\u00e9p<\/h2><p>SteelPro Group cung c\u1ea5p 8620 thanh th\u00e9p v\u1edbi nhi\u1ec1u k\u00edch th\u01b0\u1edbc ti\u00eau chu\u1ea9n kh\u00e1c nhau v\u00e0 c\u0169ng c\u00f3 th\u1ec3 cung c\u1ea5p c\u00e1c k\u00edch th\u01b0\u1edbc t\u00f9y ch\u1ec9nh \u0111\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a b\u1ea1n. Ch\u00fang t\u00f4i \u1edf \u0111\u00e2y \u0111\u1ec3 gi\u00fap b\u1ea1n t\u00ecm \u0111\u00fang v\u1eadt li\u1ec7u cho d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n.<\/p><p><strong>Thanh tr\u00f2n<\/strong>:<\/p><ul class=\"wp-block-list\"><li>\u0110\u01b0\u1eddng k\u00ednh: <strong>10 mm \u0111\u1ebfn 500 mm<\/strong> (0,4 in \u0111\u1ebfn 20 in)<\/li><\/ul><p><strong>Thanh k\u00e9o ngu\u1ed9i<\/strong>:<\/p><ul class=\"wp-block-list\"><li>\u0110\u01b0\u1eddng k\u00ednh: <strong>6 mm \u0111\u1ebfn 150 mm<\/strong> (0,24 inch \u0111\u1ebfn 6 inch)<\/li><\/ul><p><strong>Thanh r\u1ed7ng<\/strong>:<\/p><ul class=\"wp-block-list\"><li>\u0110\u01b0\u1eddng k\u00ednh ngo\u00e0i: <strong>20 mm \u0111\u1ebfn 300 mm<\/strong> (0,8 inch \u0111\u1ebfn 12 inch)<\/li>\n\n<li>\u0110\u1ed9 d\u00e0y th\u00e0nh: <strong>2 mm \u0111\u1ebfn 50 mm<\/strong> (0,08 in \u0111\u1ebfn 2 in)<\/li><\/ul><h2 class=\"wp-block-heading\">Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a th\u00e9p 8620<\/h2><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Y\u1ebfu t\u1ed1<\/strong><\/td><td><strong>Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc<\/strong><\/td><\/tr><tr><td>Cacbon (C)<\/td><td>0.18 &#8211; 0.23 %<\/td><\/tr><tr><td>Crom (Cr)<\/td><td>0.40 &#8211; 0.60 %<\/td><\/tr><tr><td>S\u1eaft (Fe)<\/td><td>96.895 &#8211; 98.02 %<\/td><\/tr><tr><td>Mangan (Mn)<\/td><td>0.70 &#8211; 0.90 %<\/td><\/tr><tr><td>Molip\u0111en (Mo)<\/td><td>0.15 &#8211; 0.25 %<\/td><\/tr><tr><td>Niken (Ni)<\/td><td>0.40 &#8211; 0.70 %<\/td><\/tr><tr><td>Ph\u1ed1t pho (P)<\/td><td>\u2264 0,035 %<\/td><\/tr><tr><td>Silic (Si)<\/td><td>0.15 &#8211; 0.35 %<\/td><\/tr><tr><td>L\u01b0u hu\u1ef3nh (S)<\/td><td>\u2264 0,040 %<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">8620 T\u00ednh ch\u1ea5t v\u1eadt l\u00fd c\u1ee7a th\u00e9p<\/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>7,85g\/cm\u00b3<\/td><td>0,284 lb\/in\u00b3<\/td><\/tr><tr><td>\u0110i\u1ec3m n\u00f3ng ch\u1ea3y<\/td><td>1425 \u2013 1510 \u00b0C<\/td><td>2597 \u2013 2750 \u00b0F<\/td><\/tr><tr><td>\u0110\u1ed9 d\u1eabn nhi\u1ec7t<\/td><td>46,6 W\/m\u00b7K<\/td><td>323 BTU\u00b7in\/gi\u1edd\u00b7ft\u00b2\u00b7\u00b0F<\/td><\/tr><tr><td>Nhi\u1ec7t dung ri\u00eang<\/td><td>0,475 J\/g\u00b7\u00b0C<\/td><td>0,114 BTU\/lb\u00b7\u00b0F<\/td><\/tr><tr><td>\u0110i\u1ec7n tr\u1edf su\u1ea5t<\/td><td>0,0000234 ohm\u00b7cm<\/td><td>0,0000234 ohm\u00b7cm<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">8620 T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a th\u00e9p<\/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 b\u1ec1n k\u00e9o<\/td><td>580 \u2013 800MPa<\/td><td>84.000 \u2013 116.000 psi<\/td><\/tr><tr><td>S\u1ee9c ch\u1ecbu l\u1ef1c<\/td><td>310 \u2013 415MPa<\/td><td>45.000 \u2013 60.000 psi<\/td><\/tr><tr><td>\u0110\u1ed9 c\u1ee9ng (Brinell)<\/td><td>170 \u2013 280 HB<\/td><td>170 \u2013 280 HB<\/td><\/tr><tr><td>\u0110\u1ed9 c\u1ee9ng (Rockwell C)<\/td><td>22 \u2013 30HRC<\/td><td>22 \u2013 30HRC<\/td><\/tr><tr><td>T\u1ef7 s\u1ed1 Poisson<\/td><td>0.29<\/td><td>0.29<\/td><\/tr><tr><td>Kh\u1ea3 n\u0103ng gia c\u00f4ng<\/td><td>65 %<\/td><td>65 %<\/td><\/tr><tr><td>M\u00f4 \u0111un c\u1eaft<\/td><td>80,0 GPa<\/td><td>11.600 kil\u00f4gam<\/td><\/tr><tr><td>M\u00f4 \u0111un kh\u1ed1i<\/td><td>160 GPa<\/td><td>23.200 kil\u00f4gam<\/td><\/tr><tr><td>M\u00f4 \u0111un \u0111\u00e0n h\u1ed3i<\/td><td>205 GPa<\/td><td>29.700 kil\u00f4gam<\/td><\/tr><tr><td>\u0110\u1ed9 b\u1ec1n va \u0111\u1eadp (Charpy)<\/td><td>40 \u2013 60J<\/td><td>29,5 \u2013 44,2 ft-lb<\/td><\/tr><tr><td>\u0110\u1ed9 gi\u00e3n d\u00e0i (50mm)<\/td><td>15 &#8211; 20 %<\/td><td>15 &#8211; 20 %<\/td><\/tr><\/tbody><\/table><\/figure><ul class=\"wp-block-list\"><li><em>Kh\u1ea3 n\u0103ng gia c\u00f4ng d\u1ef1a tr\u00ean kh\u1ea3 n\u0103ng gia c\u00f4ng 100% cho th\u00e9p AISI 1212.<\/em><\/li><\/ul><h2 class=\"wp-block-heading\">Kh\u1ea3 n\u0103ng gia c\u00f4ng th\u00e9p 8620<\/h2><p>L\u00e0m vi\u1ec7c v\u1edbi th\u00e9p 8620 th\u01b0\u1eddng \u0111\u01a1n gi\u1ea3n h\u01a1n khi th\u00e9p \u1edf tr\u1ea1ng th\u00e1i m\u1ec1m. Sau khi th\u1ea5m cacbon v\u00e0 t\u00f4i, \u0111\u1ed9 c\u1ee9ng b\u1ec1 m\u1eb7t t\u0103ng l\u00ean \u0111\u00e1ng k\u1ec3, khi\u1ebfn th\u00e9p c\u1ee9ng h\u01a1n v\u00e0 ch\u1ed1ng ch\u1ecbu t\u1ed1t h\u01a1n v\u1edbi c\u00e1c c\u00f4ng c\u1ee5 c\u1eaft. \u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao ch\u00fang t\u00f4i khuy\u00ean b\u1ea1n n\u00ean th\u1ef1c hi\u1ec7n ph\u1ea7n l\u1edbn qu\u00e1 tr\u00ecnh gia c\u00f4ng tr\u01b0\u1edbc khi th\u1ea5m cacbon.<\/p><h2 class=\"wp-block-heading\">L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 x\u1eed l\u00fd nhi\u1ec7t th\u00e9p 8620?<\/h2><h3 class=\"wp-block-heading\">\u1ee6<\/h3><p>L\u00e0m n\u00f3ng th\u00e9p \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 t\u1eeb 820\u00b0C \u0111\u1ebfn 850\u00b0C (1508\u00b0F \u0111\u1ebfn 1562\u00b0F) v\u00e0 gi\u1eef \u1edf nhi\u1ec7t \u0111\u1ed9 n\u00e0y cho \u0111\u1ebfn khi th\u00e9p \u0111\u1ed3ng \u0111\u1ec1u. Sau \u0111\u00f3, l\u00e0m ngu\u1ed9i trong l\u00f2 ho\u1eb7c \u0111\u1ec3 ngu\u1ed9i ngo\u00e0i kh\u00f4ng kh\u00ed.<\/p><h3 class=\"wp-block-heading\">L\u00e0m c\u1ee9ng<\/h3><p>L\u00e0m n\u00f3ng th\u00e9p \u0111\u1ebfn 840\u00b0C \u0111\u1ebfn 870\u00b0C (1544\u00b0F \u0111\u1ebfn 1598\u00b0F) \u0111\u1ec3 austenit h\u00f3a, sau \u0111\u00f3 l\u00e0m ngu\u1ed9i trong d\u1ea7u ho\u1eb7c n\u01b0\u1edbc t\u00f9y thu\u1ed9c v\u00e0o k\u00edch th\u01b0\u1edbc v\u00e0 h\u00ecnh d\u1ea1ng c\u1ee7a v\u1eadt li\u1ec7u. Ph\u01b0\u01a1ng ph\u00e1p l\u00e0m m\u00e1t ph\u1ee5 thu\u1ed9c v\u00e0o \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a chi ti\u1ebft.<\/p><h3 class=\"wp-block-heading\">L\u00e0m ngu\u1ed9i<\/h3><p>Sau khi t\u00f4i, t\u00f4i th\u00e9p \u1edf nhi\u1ec7t \u0111\u1ed9 t\u1eeb 200\u00b0C \u0111\u1ebfn 700\u00b0C (400\u00b0F \u0111\u1ebfn 1300\u00b0F). \u0110i\u1ec1u n\u00e0y c\u1ea3i thi\u1ec7n \u0111\u1ed9 b\u1ec1n c\u1ee7a b\u1ec1 m\u1eb7t th\u00e9p (\u0111\u1ed9 b\u1ec1n c\u1ee7a v\u1ecf) v\u00e0 gi\u1ea3m nguy c\u01a1 n\u1ee9t do m\u00e0i, m\u00e0 kh\u00f4ng l\u00e0m gi\u1ea3m \u0111\u00e1ng k\u1ec3 \u0111\u1ed9 c\u1ee9ng c\u1ee7a th\u00e9p.<\/p><h3 class=\"wp-block-heading\">Chu\u1ea9n h\u00f3a<\/h3><p>L\u00e0m n\u00f3ng th\u00e9p \u0111\u1ebfn 910\u00b0C (1670\u00b0F) v\u00e0 \u0111\u1ec3 ngu\u1ed9i trong kh\u00f4ng kh\u00ed. Vi\u1ec7c chu\u1ea9n h\u00f3a c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng gia c\u00f4ng c\u1ee7a th\u00e9p v\u00e0 th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n tr\u01b0\u1edbc khi th\u1ea5m cacbon \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t t\u1ed1t h\u01a1n.<\/p><h3 class=\"wp-block-heading\">L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 t\u00f4i th\u00e9p 8620?<\/h3><p>\u0110\u1ec3 l\u00e0m c\u1ee9ng th\u00e9p 8620, ng\u01b0\u1eddi ta s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p th\u1ea5m cacbon, trong \u0111\u00f3 th\u00e9p \u0111\u01b0\u1ee3c nung \u1edf nhi\u1ec7t \u0111\u1ed9 880\u00b0C\u2013900\u00b0C (1616\u00b0F\u20131652\u00b0F) trong m\u00f4i tr\u01b0\u1eddng gi\u00e0u cacbon. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y l\u00e0m c\u1ee9ng b\u1ec1 m\u1eb7t trong khi v\u1eabn gi\u1eef \u0111\u01b0\u1ee3c l\u00f5i c\u1ee9ng. Sau khi th\u1ea5m cacbon, th\u00e9p \u0111\u01b0\u1ee3c t\u00f4i v\u00e0 ram \u0111\u1ec3 gi\u1ea3m \u0111\u1ed9 gi\u00f2n, l\u00e0m cho th\u00e9p tr\u1edf n\u00ean l\u00fd t\u01b0\u1edfng cho c\u00e1c b\u1ed9 ph\u1eadn nh\u01b0 b\u00e1nh r\u0103ng v\u00e0 tr\u1ee5c.<\/p><p>\u0110\u1ec3 c\u00f3 m\u1ed9t b\u1ec1 m\u1eb7t c\u1ee9ng h\u01a1n, <strong>th\u1ea5m nit\u01a1<\/strong> c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng cho th\u00e9p 8620 sau khi l\u00e0m c\u1ee9ng v\u00e0 ram. Th\u1ea5m nit\u01a1 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf nhi\u1ec7t \u0111\u1ed9 t\u1eeb 490\u00b0C \u0111\u1ebfn 530\u00b0C (914\u00b0F \u0111\u1ebfn 986\u00b0F), sau \u0111\u00f3 l\u00e0m ngu\u1ed9i ch\u1eadm \u0111\u1ec3 gi\u1ea3m bi\u1ebfn d\u1ea1ng. Qu\u00e1 tr\u00ecnh n\u00e0y l\u00e0m t\u0103ng \u0111\u1ed9 c\u1ee9ng b\u1ec1 m\u1eb7t l\u00ean \u0111\u1ebfn Rc 60 trong khi v\u1eabn duy tr\u00ec \u0111\u1ed9 d\u1ebbo dai c\u1ee7a l\u00f5i.&nbsp;<\/p><p>Ch\u00fang t\u00f4i khuy\u00ean b\u1ea1n n\u00ean \u0111\u1ea3m b\u1ea3o nhi\u1ec7t \u0111\u1ed9 t\u00f4i luy\u1ec7n cao h\u01a1n nhi\u1ec7t \u0111\u1ed9 th\u1ea5m nit\u01a1 \u0111\u1ec3 c\u00f3 k\u1ebft qu\u1ea3 t\u1ed1t nh\u1ea5t.<\/p><h2 class=\"wp-block-heading\">H\u00e0n th\u00e9p 8620<\/h2><p>Khi h\u00e0n th\u00e9p 8620, t\u1ed1t nh\u1ea5t l\u00e0 l\u00e0m vi\u1ec7c \u1edf tr\u1ea1ng th\u00e1i \u1ee7 ho\u1eb7c b\u00ecnh th\u01b0\u1eddng h\u00f3a \u0111\u1ec3 tr\u00e1nh n\u1ee9t. Ch\u00fang t\u00f4i khuy\u00ean b\u1ea1n n\u00ean s\u1eed d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p h\u00e0n nh\u01b0 MIG, TIG ho\u1eb7c h\u00e0n que v\u1edbi v\u1eadt li\u1ec7u h\u00e0n ph\u00f9 h\u1ee3p.<\/p><p>L\u00e0m n\u00f3ng th\u00e9p tr\u01b0\u1edbc \u1edf nhi\u1ec7t \u0111\u1ed9 150\u00b0C \u0111\u1ebfn 200\u00b0C (302\u00b0F \u0111\u1ebfn 392\u00b0F) c\u00f3 th\u1ec3 gi\u00fap ng\u0103n ng\u1eeba n\u1ee9t, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u0111\u1ed1i v\u1edbi c\u00e1c ph\u1ea7n d\u00e0y h\u01a1n. Sau khi h\u00e0n, vi\u1ec7c \u00e1p d\u1ee5ng x\u1eed l\u00fd nhi\u1ec7t sau h\u00e0n, ch\u1eb3ng h\u1ea1n nh\u01b0 t\u00f4i luy\u1ec7n ho\u1eb7c gi\u1ea3m \u1ee9ng su\u1ea5t, l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 kh\u00f4i ph\u1ee5c c\u00e1c \u0111\u1eb7c t\u00ednh c\u1ee7a v\u1eadt li\u1ec7u v\u00e0 gi\u1ea3m thi\u1ec3u \u1ee9ng su\u1ea5t.<\/p><h2 class=\"wp-block-heading\">Th\u00e9p 8620 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u00e0m g\u00ec?<\/h2><p>Th\u00e9p AISI 8620 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong nhi\u1ec1u th\u00e0nh ph\u1ea7n c\u01a1 kh\u00ed \u0111\u00f2i h\u1ecfi s\u1ef1 c\u00e2n b\u1eb1ng gi\u1eefa \u0111\u1ed9 b\u1ec1n, kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n v\u00e0 \u0111\u1ed9 b\u1ec1n. Sau \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3:<\/p><ul class=\"wp-block-list\"><li>B\u00e1nh r\u0103ng (b\u00e1nh r\u0103ng th\u1eb3ng, b\u00e1nh r\u0103ng c\u00f4n, b\u00e1nh r\u0103ng vi sai)<\/li>\n\n<li>Tr\u1ee5c khu\u1ef7u<\/li>\n\n<li>Tr\u1ee5c<\/li>\n\n<li>Tr\u1ee5c (tr\u1ee5c truy\u1ec1n \u0111\u1ed9ng, tr\u1ee5c b\u0103ng t\u1ea3i)<\/li>\n\n<li>V\u00f2ng bi<\/li>\n\n<li>Tr\u1ee5c cam<\/li>\n\n<li>Ch\u1ed1t v\u00e0 \u1ed1ng l\u00f3t (ch\u1ed1t piston, ch\u1ed1t \u0111\u00f2n b\u1ea9y)<\/li>\n\n<li>Ch\u1ed1t (bu l\u00f4ng, \u0111ai \u1ed1c)<\/li><\/ul><h2 class=\"wp-block-heading\">Th\u00e9p 8620 so v\u1edbi Th\u00e9p 4140<\/h2><p>8620 ch\u1ee9a niken, crom v\u00e0 molypden, gi\u00fap t\u0103ng \u0111\u1ed9 c\u1ee9ng b\u1ec1 m\u1eb7t th\u00f4ng qua qu\u00e1 tr\u00ecnh th\u1ea5m cacbon. Ng\u01b0\u1ee3c l\u1ea1i, 4140 c\u00f3 h\u00e0m l\u01b0\u1ee3ng cacbon cao h\u01a1n v\u00e0 cung c\u1ea5p \u0111\u1ed9 b\u1ec1n t\u1ed5ng th\u1ec3 cao h\u01a1n m\u00e0 kh\u00f4ng c\u1ea7n th\u1ea5m cacbon.&nbsp;<\/p><p>8620 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c b\u1ed9 ph\u1eadn nh\u01b0 b\u00e1nh r\u0103ng v\u00e0 tr\u1ee5c. 4140, v\u1edbi h\u00e0m l\u01b0\u1ee3ng carbon cao h\u01a1n, c\u00f3 \u0111\u1ed9 b\u1ec1n t\u1ed5ng th\u1ec3 l\u1edbn h\u01a1n v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c b\u1ed9 ph\u1eadn \u0111\u00f2i h\u1ecfi \u0111\u1ed9 b\u1ec1n k\u00e9o cao h\u01a1n, ch\u1eb3ng h\u1ea1n nh\u01b0 tr\u1ee5c khu\u1ef7u v\u00e0 tr\u1ee5c ch\u1ecbu t\u1ea3i n\u1eb7ng.<\/p><h2 class=\"wp-block-heading\">Gi\u1ea3i ph\u00e1p th\u00e9p cao c\u1ea5p 8620 c\u1ee7a SteelPro Group<\/h2><p>SteelPro Group l\u00e0 nh\u00e0 cung c\u1ea5p h\u00e0ng \u0111\u1ea7u qu\u1ed1c t\u1ebf c\u00e1c s\u1ea3n ph\u1ea9m th\u00e9p 8620 cao c\u1ea5p. Ch\u00fang t\u00f4i cung c\u1ea5p nhi\u1ec1u lo\u1ea1i thanh th\u00e9p 8620 theo c\u1ea3 k\u00edch th\u01b0\u1edbc ti\u00eau chu\u1ea9n v\u00e0 t\u00f9y ch\u1ec9nh \u0111\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a b\u1ea1n. Cho d\u00f9 l\u00e0 b\u00e1nh r\u0103ng, tr\u1ee5c cam hay c\u00e1c th\u00e0nh ph\u1ea7n kh\u00e1c, ch\u00fang t\u00f4i \u0111\u1ec1u cung c\u1ea5p v\u1eadt li\u1ec7u \u0111\u00e1ng tin c\u1eady, hi\u1ec7u su\u1ea5t cao \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 b\u1edfi chuy\u00ean m\u00f4n c\u1ee7a m\u00ecnh.<\/p><p>Ngo\u00e0i th\u00e9p 8620, ch\u00fang t\u00f4i c\u00f2n cung c\u1ea5p <strong><a href=\"https:\/\/steelprogroup.com\/vi\/tool-steel\/cr12mov\/\">Ng\u00e0y 2<\/a><\/strong> <strong>V\u00e0 <a href=\"https:\/\/steelprogroup.com\/vi\/tool-steel\/h13\/\">Th\u00e9p c\u00f4ng c\u1ee5 H13<\/a><\/strong>, \u0111\u1ea3m b\u1ea3o c\u00e1c gi\u1ea3i ph\u00e1p ch\u1ea5t l\u01b0\u1ee3ng cao cho nhi\u1ec1u \u1ee9ng d\u1ee5ng d\u1ee5ng c\u1ee5 kh\u00e1c nhau.<\/p>","protected":false},"excerpt":{"rendered":"<p>SteelPro Group cung c\u1ea5p 8620 thanh th\u00e9p \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n khu v\u1ef1c nh\u01b0 ASTM, ISO v\u00e0 GB. S\u1ea3n ph\u1ea9m c\u1ee7a ch\u00fang t\u00f4i \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t b\u1eb1ng [\u2026]<\/p>","protected":false},"author":12,"featured_media":20183,"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-20187","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\/20187","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=20187"}],"version-history":[{"count":0,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/20187\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media\/20183"}],"wp:attachment":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media?parent=20187"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/categories?post=20187"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/tags?post=20187"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}