{"id":9889,"date":"2024-09-04T18:51:50","date_gmt":"2024-09-04T10:51:50","guid":{"rendered":"https:\/\/app11147.cloudwayssites.com\/?p=9889"},"modified":"2025-02-17T17:55:50","modified_gmt":"2025-02-17T09:55:50","slug":"magnetic","status":"publish","type":"post","link":"https:\/\/steelprogroup.com\/vi\/stainless-steel\/properties\/magnetic\/","title":{"rendered":"Th\u00e9p kh\u00f4ng g\u1ec9 c\u00f3 t\u1eeb t\u00ednh kh\u00f4ng?"},"content":{"rendered":"<p>Th\u00e9p kh\u00f4ng g\u1ec9 kh\u00f4ng c\u00f2n l\u00e0 \u0111i\u1ec1u g\u00ec m\u1edbi m\u1ebb ng\u00e0y nay. C\u00f3 th\u1ec3 b\u1ea1n v\u1eeba n\u1ea5u b\u1eefa t\u1ed1i t\u1ed1i qua b\u1eb1ng \u0111\u1ed3 d\u00f9ng nh\u00e0 b\u1ebfp l\u00e0m b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9. <strong>Nh\u01b0ng b\u1ea1n c\u00f3 bi\u1ebft th\u00e9p kh\u00f4ng g\u1ec9 c\u00f3 t\u1eeb t\u00ednh hay kh\u00f4ng?<\/strong> C\u00e2u tr\u1ea3 l\u1eddi l\u00e0 c\u00f3 v\u00e0 kh\u00f4ng. H\u1ea7u h\u1ebft th\u00e9p kh\u00f4ng g\u1ec9 \u0111\u1ec1u kh\u00f4ng c\u00f3 t\u1eeb t\u00ednh; tuy nhi\u00ean, c\u00f3 m\u1ed9t s\u1ed1 lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 c\u00f3 t\u1eeb t\u00ednh c\u1ee5 th\u1ec3.<\/p><h2 class=\"wp-block-heading\">\u0110i\u1ec1u g\u00ec l\u00e0m cho th\u00e9p kh\u00f4ng g\u1ec9 c\u00f3 t\u1eeb t\u00ednh?<\/h2><p>N\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n, th\u00e9p kh\u00f4ng g\u1ec9 ph\u1ea3i \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u sau \u0111\u1ec3 c\u00f3 t\u00ednh t\u1eeb:<\/p><ol class=\"wp-block-list\"><li>N\u00f3 ph\u1ea3i ch\u1ee9a s\u1eaft.<\/li>\n\n<li>Y\u00eau c\u1ea7u ph\u1ea3i c\u00f3 c\u1ea5u tr\u00fac martensitic (BCT) ho\u1eb7c ferritic (BCC).<\/li><\/ol><p><em>* BCT: t\u1ee9 gi\u00e1c t\u00e2m kh\u1ed1i; BCC: l\u1eadp ph\u01b0\u01a1ng t\u00e2m kh\u1ed1i. C\u1ea3 hai \u0111\u1ec1u l\u00e0 c\u1ea5u tr\u00fac tinh th\u1ec3.<\/em><\/p><p>T\u1ea5t c\u1ea3 c\u00e1c lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 \u0111\u1ec1u ch\u1ee9a s\u1eaft, v\u1ed1n c\u00f3 t\u1eeb t\u00ednh. Tuy nhi\u00ean, li\u1ec7u th\u00e9p kh\u00f4ng g\u1ec9 c\u00f3 t\u1eeb t\u00ednh hay kh\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o c\u1ea5u tr\u00fac tinh th\u1ec3 c\u1ee7a n\u00f3. N\u1ebfu h\u1ee3p kim l\u00e0 <a href=\"https:\/\/steelprogroup.com\/vi\/stainless-steel\/type\/austenitic\/\">austenit<\/a>, th\u00ec n\u00f3 th\u01b0\u1eddng kh\u00f4ng c\u00f3 t\u1eeb t\u00ednh. \u0110i\u1ec1u n\u00e0y l\u00e0 do c\u1ea5u tr\u00fac tinh th\u1ec3 c\u1ee7a n\u00f3 kh\u00f4ng bi\u1ec3u hi\u1ec7n t\u1eeb t\u00ednh m\u1eb7c d\u00f9 c\u00f3 ch\u1ee9a s\u1eaft.&nbsp;<\/p><h3 class=\"wp-block-heading\">Th\u00e9p kh\u00f4ng g\u1ec9 c\u00f3 ph\u1ea3i l\u00e0 nam ch\u00e2m v\u0129nh c\u1eedu kh\u00f4ng?<\/h3><p>Th\u00e9p kh\u00f4ng g\u1ec9 n\u00f3i chung kh\u00f4ng ph\u1ea3i l\u00e0 nam ch\u00e2m v\u0129nh c\u1eedu. M\u1ed9t s\u1ed1 lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 c\u00f3 th\u1ec3 c\u00f3 t\u1eeb t\u00ednh, nh\u01b0ng ch\u00fang m\u1ea5t t\u1eeb t\u00ednh khi t\u1eeb tr\u01b0\u1eddng b\u00ean ngo\u00e0i b\u1ecb lo\u1ea1i b\u1ecf. Nam ch\u00e2m v\u0129nh c\u1eedu, nh\u01b0 nam ch\u00e2m l\u00e0m t\u1eeb s\u1eaft ho\u1eb7c coban, v\u1eabn gi\u1eef \u0111\u01b0\u1ee3c t\u1eeb t\u00ednh theo th\u1eddi gian.<\/p><h2 class=\"wp-block-heading\">Nh\u1eefng y\u1ebfu t\u1ed1 n\u00e0o \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1eeb t\u00ednh c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9?<\/h2><p>Ch\u00fang ta \u0111\u00e3 bi\u1ebft nh\u1eefng y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh xem th\u00e9p kh\u00f4ng g\u1ec9 c\u00f3 t\u1eeb t\u00ednh hay kh\u00f4ng. Sau \u0111\u00e2y l\u00e0 c\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1eeb t\u00ednh c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9:<\/p><ol class=\"wp-block-list\"><li><strong>Th\u00e0nh ph\u1ea7n h\u1ee3p kim:<\/strong> C\u00e1c lo\u1ea1i v\u00e0 l\u01b0\u1ee3ng nguy\u00ean t\u1ed1 h\u1ee3p kim, ch\u1eb3ng h\u1ea1n nh\u01b0 crom v\u00e0 niken, c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u00ednh ch\u1ea5t t\u1eeb t\u00ednh c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9.<\/li>\n\n<li><strong>X\u1eed l\u00fd nhi\u1ec7t:<\/strong> C\u00e1c quy tr\u00ecnh x\u1eed l\u00fd nhi\u1ec7t kh\u00e1c nhau c\u00f3 th\u1ec3 thay \u0111\u1ed5i c\u1ea5u tr\u00fac tinh th\u1ec3 c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9, t\u1eeb \u0111\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u00ednh ch\u1ea5t t\u1eeb t\u00ednh c\u1ee7a n\u00f3.<\/li>\n\n<li><strong>L\u00e0m vi\u1ec7c ngu\u1ed9i:<\/strong> C\u00e1c quy tr\u00ecnh nh\u01b0 c\u00e1n ngu\u1ed9i c\u00f3 th\u1ec3 t\u1ea1o ra t\u1eeb t\u00ednh trong th\u00e9p kh\u00f4ng g\u1ec9 b\u1eb1ng c\u00e1ch thay \u0111\u1ed5i c\u1ea5u tr\u00fac tinh th\u1ec3 c\u1ee7a n\u00f3.<\/li>\n\n<li><strong>Nhi\u1ec7t \u0111\u1ed9:<\/strong> T\u00ednh ch\u1ea5t t\u1eeb t\u00ednh c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 c\u00f3 th\u1ec3 thay \u0111\u1ed5i theo nhi\u1ec7t \u0111\u1ed9; n\u00f3 c\u00f3 th\u1ec3 tr\u1edf n\u00ean nhi\u1ec1u ho\u1eb7c \u00edt t\u1eeb t\u00ednh h\u01a1n khi \u0111\u01b0\u1ee3c \u0111un n\u00f3ng ho\u1eb7c l\u00e0m m\u00e1t.<\/li>\n\n<li><strong>S\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a t\u1ea1p ch\u1ea5t<\/strong>:C\u00e1c t\u1ea1p ch\u1ea5t c\u00f3 th\u1ec3 ph\u00e1 v\u1ee1 t\u00ednh \u0111\u1ed3ng nh\u1ea5t c\u1ee7a c\u1ea5u tr\u00fac tinh th\u1ec3, c\u00f3 kh\u1ea3 n\u0103ng l\u00e0m gi\u1ea3m ho\u1eb7c thay \u0111\u1ed5i c\u00e1c t\u00ednh ch\u1ea5t t\u1eeb t\u00ednh.<\/li><\/ol><h2 class=\"wp-block-heading\">Lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 n\u00e0o c\u00f3 t\u1eeb t\u00ednh? Lo\u1ea1i n\u00e0o kh\u00f4ng?&nbsp;<\/h2><p>Nh\u00ecn chung, h\u1ea7u h\u1ebft c\u00e1c lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 \u0111\u1ec1u kh\u00f4ng c\u00f3 t\u1eeb t\u00ednh. C\u00e1c lo\u1ea1i c\u1ee5 th\u1ec3 nh\u01b0 th\u00e9p kh\u00f4ng g\u1ec9 ferritic v\u00e0 martensitic c\u00f3 t\u1eeb t\u00ednh, trong khi th\u00e9p kh\u00f4ng g\u1ec9 austenitic th\u01b0\u1eddng kh\u00f4ng c\u00f3 t\u1eeb t\u00ednh.&nbsp;<\/p><p>Sau \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 ph\u1ed5 bi\u1ebfn c\u00f3 t\u1eeb t\u00ednh ho\u1eb7c kh\u00f4ng t\u1eeb t\u00ednh:<\/p><h3 class=\"wp-block-heading\"><strong>C\u00e1c lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 t\u1eeb t\u00ednh<\/strong><\/h3><ul class=\"wp-block-list\"><li>Ferritic: 430, 409<\/li>\n\n<li>Martensitic: 410, 420, 440C<\/li>\n\n<li>C\u0103n h\u1ed9 song l\u1eadp<strong>:<\/strong> 2205, 2507<\/li><\/ul><h3 class=\"wp-block-heading\"><strong>C\u00e1c lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 kh\u00f4ng t\u1eeb t\u00ednh<\/strong><\/h3><ul class=\"wp-block-list\"><li>Austenit: 304, 316, 310<\/li><\/ul><h3 class=\"wp-block-heading\"><strong>C\u00e1c tr\u01b0\u1eddng h\u1ee3p \u0111\u1eb7c bi\u1ec7t<\/strong><\/h3><p>Th\u00e9p kh\u00f4ng g\u1ec9 austenit, ch\u1eb3ng h\u1ea1n nh\u01b0 <a href=\"https:\/\/steelprogroup.com\/vi\/stainless-steel\/grades\/grade-304\/\">304<\/a> V\u00e0 <a href=\"https:\/\/steelprogroup.com\/vi\/stainless-steel\/grades\/grade-316\/\" data-type=\"post\" data-id=\"10280\" target=\"_blank\" rel=\"noreferrer noopener\">316<\/a>, th\u01b0\u1eddng kh\u00f4ng c\u00f3 t\u1eeb t\u00ednh. Tuy nhi\u00ean, ch\u00fang c\u00f3 th\u1ec3 tr\u1edf n\u00ean h\u01a1i c\u00f3 t\u1eeb t\u00ednh sau khi gia c\u00f4ng ngu\u1ed9i ho\u1eb7c h\u00e0n nhi\u1ec1u do s\u1ef1 h\u00ecnh th\u00e0nh c\u1ee7a martensit.<\/p><p>Ng\u01b0\u1ee3c l\u1ea1i, th\u00e9p kh\u00f4ng g\u1ec9 t\u1eeb t\u00ednh \u00edt ph\u1ed5 bi\u1ebfn h\u01a1n khi tr\u1edf th\u00e0nh phi t\u1eeb t\u00ednh. M\u1eb7c d\u00f9 m\u1ed9t s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p x\u1eed l\u00fd nhi\u1ec7t c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m t\u1eeb t\u00ednh c\u1ee7a th\u00e9p ferritic v\u00e0 martensitic, nh\u01b0ng ch\u00fang th\u01b0\u1eddng kh\u00f4ng lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n.<\/p><h3 class=\"wp-block-heading\">Th\u00e9p kh\u00f4ng g\u1ec9 Duplex c\u00f3 t\u1eeb t\u00ednh \u0111\u1eb7c bi\u1ec7t<\/h3><p><a href=\"https:\/\/steelprogroup.com\/vi\/stainless-steel\/type\/duplex\/\">Th\u00e9p kh\u00f4ng g\u1ec9 Duplex<\/a> c\u00f3 c\u1ea5u tr\u00fac vi m\u00f4 h\u1ed7n h\u1ee3p c\u1ee7a austenit v\u00e0 ferit, mang l\u1ea1i cho ch\u00fang m\u1ed9t s\u1ed1 t\u00ednh ch\u1ea5t t\u1eeb t\u00ednh. M\u1eb7c d\u00f9 ch\u00fang kh\u00f4ng c\u00f3 t\u1eeb t\u00ednh nh\u01b0 th\u00e9p ferritic ho\u1eb7c martensitic nguy\u00ean ch\u1ea5t, nh\u01b0ng ch\u00fang c\u00f3 t\u1eeb t\u00ednh cao h\u01a1n th\u00e9p austenit nguy\u00ean ch\u1ea5t. C\u1ea5u tr\u00fac pha k\u00e9p n\u00e0y k\u1ebft h\u1ee3p c\u00e1c t\u00ednh ch\u1ea5t c\u00f3 l\u1ee3i c\u1ee7a c\u1ea3 hai pha, bao g\u1ed3m m\u1ed9t s\u1ed1 m\u1ee9c \u0111\u1ed9 t\u1eeb t\u00ednh.<\/p><h2 class=\"wp-block-heading\">T\u1ea1i sao t\u1eeb t\u00ednh l\u1ea1i l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng c\u1ea7n c\u00e2n nh\u1eafc khi s\u1ea3n xu\u1ea5t th\u00e9p kh\u00f4ng g\u1ec9?<\/h2><p>T\u1eeb t\u00ednh l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng c\u1ea7n c\u00e2n nh\u1eafc khi s\u1eed d\u1ee5ng th\u00e9p kh\u00f4ng g\u1ec9 v\u00ec n\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 trong nhi\u1ec1u \u1ee9ng d\u1ee5ng kh\u00e1c nhau, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong m\u00f4i tr\u01b0\u1eddng nh\u1ea1y c\u1ea3m v\u1edbi nhi\u1ec5u t\u1eeb.&nbsp;<\/p><p>Ngo\u00e0i ra, t\u1eeb t\u00ednh \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u00ednh ph\u1ee9c t\u1ea1p v\u00e0 kh\u00f3 kh\u0103n c\u1ee7a c\u00e1c quy tr\u00ecnh ch\u1ebf t\u1ea1o nh\u01b0 gia c\u00f4ng, t\u1ea1o h\u00ecnh v\u00e0 h\u00e0n. V\u00ed d\u1ee5, t\u1eeb t\u00ednh l\u00e0m ph\u1ee9c t\u1ea1p qu\u00e1 tr\u00ecnh gia c\u00f4ng do c\u00e1c m\u1ea3nh kim lo\u1ea1i b\u00e1m v\u00e0o b\u1ec1 m\u1eb7t t\u1eeb t\u00ednh. Ngo\u00e0i ra, v\u1eadt li\u1ec7u t\u1eeb t\u00ednh c\u00f3 th\u1ec3 g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng h\u1ed3 quang trong qu\u00e1 tr\u00ecnh h\u00e0n, d\u1eabn \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng m\u1ed1i h\u00e0n k\u00e9m h\u01a1n. Do \u0111\u00f3, ph\u1ea3i xem x\u00e9t c\u00e1c \u0111\u1eb7c t\u00ednh t\u1eeb t\u00ednh \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng trong c\u00e1c quy tr\u00ecnh ch\u1ebf t\u1ea1o.<\/p><h2 class=\"wp-block-heading\">C\u00e1c lo\u1ea1i th\u00e9p t\u1eeb t\u00ednh kh\u00e1c ngo\u00e0i th\u00e9p kh\u00f4ng g\u1ec9<\/h2><p>Ngo\u00e0i th\u00e9p kh\u00f4ng g\u1ec9, c\u00f2n c\u00f3 m\u1ed9t s\u1ed1 lo\u1ea1i th\u00e9p t\u1eeb t\u00ednh. Ki\u1ec3m tra b\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y \u0111\u1ec3 so s\u00e1nh nhanh gi\u1eefa ch\u00fang:<\/p><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Lo\u1ea1i th\u00e9p<\/strong><\/td><td><strong>Th\u00e9p \u0111i\u1ec7n (Th\u00e9p Silicon)<\/strong><\/td><td><strong>Maraging th\u00e9p<\/strong><\/td><td><strong><a href=\"https:\/\/steelprogroup.com\/vi\/alloy-steel\/\">Th\u00e9p h\u1ee3p kim<\/a><\/strong><\/td><td><strong><a href=\"https:\/\/steelprogroup.com\/vi\/plain-carbon-steel\/\">Th\u00e9p Cacbon<\/a><\/strong><\/td><td><strong><a href=\"https:\/\/steelprogroup.com\/vi\/tool-steel\/\">Th\u00e9p c\u00f4ng c\u1ee5<\/a><\/strong><\/td><td><strong><a href=\"https:\/\/steelprogroup.com\/vi\/stainless-steel\/\">Th\u00e9p kh\u00f4ng g\u1ec9<\/a><\/strong><\/td><\/tr><tr><td><strong>T\u1eeb t\u00ednh<\/strong><\/td><td>Cao<\/td><td>Cao<\/td><td>Trung b\u00ecnh \u0111\u1ebfn Cao<\/td><td>V\u1eeba ph\u1ea3i<\/td><td>V\u1eeba ph\u1ea3i<\/td><td>N\u00f3i chung l\u00e0 th\u1ea5p<\/td><\/tr><tr><td><strong>\u0110\u1ed9 t\u1eeb th\u1ea9m<\/strong><\/td><td>R\u1ea5t cao<\/td><td>Cao<\/td><td>Trung b\u00ecnh \u0111\u1ebfn Cao<\/td><td>V\u1eeba ph\u1ea3i<\/td><td>V\u1eeba ph\u1ea3i<\/td><td>Th\u1ea5p<\/td><\/tr><tr><td><strong>L\u1ef1c c\u01b0\u1ee1ng b\u1ee9c<\/strong><\/td><td>Th\u1ea5p<\/td><td>Th\u1ea5p<\/td><td>V\u1eeba ph\u1ea3i<\/td><td>Cao<\/td><td>Cao<\/td><td>Cao<\/td><\/tr><tr><td><strong>\u1ee8ng d\u1ee5ng<\/strong><\/td><td>M\u00e1y bi\u1ebfn \u00e1p, \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n, m\u00e1y ph\u00e1t \u0111i\u1ec7n<\/td><td>H\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, \u1ee9ng d\u1ee5ng d\u1ee5ng c\u1ee5<\/td><td>C\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p kh\u00e1c nhau<\/td><td>K\u1ef9 thu\u1eadt chung, x\u00e2y d\u1ef1ng<\/td><td>D\u1ee5ng c\u1ee5 \u0111\u00f2i h\u1ecfi \u0111\u1ed9 c\u1ee9ng cao<\/td><td>\u1ee8ng d\u1ee5ng ch\u1ed1ng \u0103n m\u00f2n, \u0111\u1ed3 n\u1ea5u n\u01b0\u1edbng, d\u1ee5ng c\u1ee5 y t\u1ebf<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">Nh\u1eefng g\u00ec b\u1ea1n c\u0169ng c\u00f3 th\u1ec3 quan t\u00e2m<\/h2><h3 class=\"wp-block-heading\">Nam ch\u00e2m c\u00f3 l\u00e0m h\u1ecfng th\u00e9p kh\u00f4ng g\u1ec9 kh\u00f4ng?<\/h3><p>Nam ch\u00e2m c\u00f3 th\u1ec3 h\u00fat m\u1ed9t s\u1ed1 lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 nh\u1ea5t \u0111\u1ecbnh (nh\u01b0 th\u00e9p kh\u00f4ng g\u1ec9 ferritic), nh\u01b0ng ch\u00fang kh\u00f4ng g\u00e2y h\u1ea1i cho c\u1ea5u tr\u00fac ho\u1eb7c hi\u1ec7u su\u1ea5t c\u1ee7a th\u00e9p.<\/p><h3 class=\"wp-block-heading\">L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 t\u1eeb h\u00f3a th\u00e9p kh\u00f4ng g\u1ec9?<\/h3><p>\u0110\u1ec3 t\u1eeb h\u00f3a th\u00e9p kh\u00f4ng g\u1ec9, h\u00e3y \u0111\u1ec3 th\u00e9p ti\u1ebfp x\u00fac v\u1edbi t\u1eeb tr\u01b0\u1eddng m\u1ea1nh ho\u1eb7c ch\u00e0 x\u00e1t b\u1eb1ng nam ch\u00e2m m\u1ea1nh. M\u1ed9t s\u1ed1 lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9, nh\u01b0 th\u00e9p kh\u00f4ng g\u1ec9 martensitic, c\u00f3 th\u1ec3 b\u1ecb t\u1eeb h\u00f3a d\u1ec5 d\u00e0ng h\u01a1n nh\u1eefng lo\u1ea1i kh\u00e1c.<\/p><h3 class=\"wp-block-heading\">L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 lo\u1ea1i b\u1ecf t\u1eeb t\u00ednh kh\u1ecfi th\u00e9p kh\u00f4ng g\u1ec9?<\/h3><p>\u0110\u1ec3 lo\u1ea1i b\u1ecf t\u1eeb t\u00ednh kh\u1ecfi th\u00e9p kh\u00f4ng g\u1ec9, b\u1ea1n c\u00f3 th\u1ec3 nung n\u00f3ng th\u00e9p \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n \u0111i\u1ec3m Curie r\u1ed3i \u0111\u1ec3 ngu\u1ed9i. \u0110i\u1ec3m Curie l\u00e0 nhi\u1ec7t \u0111\u1ed9 m\u00e0 v\u1eadt li\u1ec7u m\u1ea5t \u0111i c\u00e1c t\u00ednh ch\u1ea5t t\u1eeb t\u00ednh. M\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn kh\u00e1c l\u00e0 s\u1eed d\u1ee5ng m\u00e1y kh\u1eed t\u1eeb, t\u1ea1o ra t\u1eeb tr\u01b0\u1eddng xen k\u1ebd gi\u1ea3m d\u1ea7n c\u01b0\u1eddng \u0111\u1ed9 \u0111\u1ec3 kh\u1eed t\u1eeb th\u00e9p.<\/p><h3 class=\"wp-block-heading\">Th\u00e9p kh\u00f4ng g\u1ec9 c\u1ea5p th\u1ef1c ph\u1ea9m c\u00f3 t\u1eeb t\u00ednh kh\u00f4ng?<\/h3><p>Th\u00e9p kh\u00f4ng g\u1ec9 d\u00f9ng trong th\u1ef1c ph\u1ea9m, ch\u1eb3ng h\u1ea1n nh\u01b0 304 v\u00e0 316, th\u01b0\u1eddng kh\u00f4ng c\u00f3 t\u1eeb t\u00ednh, m\u1eb7c d\u00f9 c\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n t\u1eeb t\u00ednh nh\u1eb9 do x\u1eed l\u00fd ngu\u1ed9i.<\/p><h3 class=\"wp-block-heading\">T\u1ea5t c\u1ea3 th\u00e9p kh\u00f4ng g\u1ec9 d\u00f2ng 400 \u0111\u1ec1u c\u00f3 t\u1eeb t\u00ednh kh\u00f4ng?<\/h3><p>C\u00f3, t\u1ea5t c\u1ea3 th\u00e9p kh\u00f4ng g\u1ec9 d\u00f2ng 400 \u0111\u1ec1u c\u00f3 t\u1eeb t\u00ednh. C\u00e1c lo\u1ea1i ph\u1ed5 bi\u1ebfn bao g\u1ed3m <a href=\"https:\/\/steelprogroup.com\/vi\/stainless-steel\/grades\/grade-410\/\">410<\/a>, <a href=\"https:\/\/steelprogroup.com\/vi\/stainless-steel\/grades\/grade-420\/\">420<\/a>, V\u00e0 <a href=\"https:\/\/steelprogroup.com\/vi\/stainless-steel\/grades\/grade-430\/\">430<\/a>.<\/p><h2 class=\"wp-block-heading\">T\u00f3m t\u1eaft &amp; Th\u00eam n\u1eefa<\/h2><p>B\u00e0i vi\u1ebft n\u00e0y gi\u1ea3i th\u00edch ng\u1eafn g\u1ecdn v\u1ec1 c\u00e1c t\u00ednh ch\u1ea5t t\u1eeb t\u00ednh c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9, ch\u1eb3ng h\u1ea1n nh\u01b0 \u0111i\u1ec1u g\u00ec l\u00e0m cho n\u00f3 c\u00f3 t\u1eeb t\u00ednh, \u0111i\u1ec1u g\u00ec \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1eeb t\u00ednh c\u1ee7a n\u00f3, lo\u1ea1i v\u00e0 c\u1ea5p th\u00e9p kh\u00f4ng g\u1ec9 n\u00e0o c\u00f3 t\u1eeb t\u00ednh hay kh\u00f4ng, v.v. \u0110\u1ec3 t\u00ecm hi\u1ec3u th\u00eam v\u1ec1 th\u00e9p kh\u00f4ng g\u1ec9 ho\u1eb7c c\u00e1c lo\u1ea1i th\u00e9p kh\u00e1c, h\u00e3y xem <a href=\"https:\/\/steelprogroup.com\/vi\/blog\/\">blog c\u1ee7a ch\u00fang t\u00f4i<\/a> ho\u1eb7c <a href=\"https:\/\/steelprogroup.com\/vi\/contact-us\/\">li\u00ean h\u1ec7 v\u1edbi c\u00e1c chuy\u00ean gia kim lo\u1ea1i c\u1ee7a ch\u00fang t\u00f4i<\/a>.<\/p><p>L\u00e0 nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 cung c\u1ea5p gi\u1ea3i ph\u00e1p h\u00e0ng \u0111\u1ea7u v\u1ec1 th\u00e9p chuy\u00ean d\u1ee5ng, ch\u00fang t\u00f4i cung c\u1ea5p c\u00e1c gi\u1ea3i ph\u00e1p \u1ee9ng d\u1ee5ng \u0111a ng\u00e0nh v\u00e0 d\u1ecbch v\u1ee5 t\u00f9y ch\u1ec9nh v\u1edbi cam k\u1ebft ch\u1ea5t l\u01b0\u1ee3ng 100%, cam k\u1ebft ph\u00e1t tri\u1ec3n c\u00f9ng kh\u00e1ch h\u00e0ng. Gh\u00e9 th\u0103m <a href=\"https:\/\/steelprogroup.com\/vi\">trang web c\u1ee7a ch\u00fang t\u00f4i<\/a> \u0111\u1ec3 t\u00ecm hi\u1ec3u th\u00eam, ho\u1eb7c <a href=\"https:\/\/steelprogroup.com\/vi\/contact-us\/\">g\u1eedi cho ch\u00fang t\u00f4i m\u1ed9t b\u00e1o gi\u00e1<\/a>v\u00e0 ch\u00fang t\u00f4i s\u1ebd li\u00ean h\u1ec7 v\u1edbi b\u1ea1n s\u1edbm!<br><\/p>","protected":false},"excerpt":{"rendered":"<p>Stainless steel is nothing new today. You may have just cooked dinner last night using kitchenware made of stainless steel. [&hellip;]<\/p>","protected":false},"author":1,"featured_media":9892,"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":[4202,112],"tags":[],"class_list":["post-9889","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-properties","category-stainless-steel"],"acf":[],"_links":{"self":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/9889","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=9889"}],"version-history":[{"count":0,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/9889\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media\/9892"}],"wp:attachment":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media?parent=9889"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/categories?post=9889"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/tags?post=9889"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}