{"id":10409,"date":"2024-09-11T09:39:00","date_gmt":"2024-09-11T01:39:00","guid":{"rendered":"https:\/\/app11147.cloudwayssites.com\/?p=10409"},"modified":"2024-11-15T15:24:33","modified_gmt":"2024-11-15T07:24:33","slug":"304-vs-304l","status":"publish","type":"post","link":"https:\/\/steelprogroup.com\/vi\/stainless-steel\/grades\/comparisons\/304-vs-304l\/","title":{"rendered":"So s\u00e1nh th\u00e9p kh\u00f4ng g\u1ec9 304 v\u00e0 304L: S\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh v\u00e0 \u1ee9ng d\u1ee5ng"},"content":{"rendered":"<p>Th\u00e9p kh\u00f4ng g\u1ec9 \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 cao v\u00ec kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u00e0 \u0111\u1ed9 b\u1ec1n \u1edf nhi\u1ec7t \u0111\u1ed9 cao. Tuy nhi\u00ean, t\u00ean g\u1ecdi t\u01b0\u01a1ng t\u1ef1 c\u00f3 th\u1ec3 g\u00e2y nh\u1ea7m l\u1eabn khi ph\u00e2n bi\u1ec7t gi\u1eefa c\u00e1c ph\u00e2n nh\u00f3m nh\u01b0 304 v\u00e0 304L. S\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh n\u1eb1m \u1edf h\u00e0m l\u01b0\u1ee3ng carbon: 304 c\u00f3 t\u1edbi 0,08%, trong khi 304L c\u00f3 t\u1ed1i \u0111a 0,03%. S\u1ef1 thay \u0111\u1ed5i nh\u1ecf n\u00e0y d\u1eabn \u0111\u1ebfn s\u1ef1 kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3 v\u1ec1 \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a ch\u00fang.<\/p><p>Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd kh\u00e1m ph\u00e1 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa th\u00e9p kh\u00f4ng g\u1ec9 304 v\u00e0 bi\u1ebfn th\u1ec3 304L, t\u1eadp trung v\u00e0o c\u00e1c \u0111\u1eb7c t\u00ednh, \u1ee9ng d\u1ee5ng v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 ph\u00e2n bi\u1ec7t kh\u00e1c c\u1ee7a ch\u00fang.<\/p><h2 class=\"wp-block-heading\">Th\u00e9p kh\u00f4ng g\u1ec9 304 l\u00e0 g\u00ec?<\/h2><p><a href=\"https:\/\/steelprogroup.com\/vi\/stainless-steel\/grades\/grade-304\/\">th\u00e9p kh\u00f4ng g\u1ec9 304<\/a>, ho\u1eb7c A2, 18\/8, c\u00f3 18% crom v\u00e0 8% niken, c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n, kh\u1ea3 n\u0103ng \u0111\u1ecbnh h\u00ecnh v\u00e0 \u0111\u1ed9 b\u1ec1n t\u1ed1t. X\u1eed l\u00fd nhi\u1ec7t kh\u00f4ng th\u1ec3 l\u00e0m c\u1ee9ng n\u00f3 v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf tr\u1ea1ng th\u00e1i \u1ee7. N\u00f3 c\u00f3 th\u1ec3 h\u00e0n, gia c\u00f4ng v\u00e0 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho b\u1ed3n r\u1eeda, th\u00f9ng ch\u1ee9a th\u1ef1c ph\u1ea9m, d\u1ee5ng c\u1ee5 ph\u1eabu thu\u1eadt v\u00e0 h\u1ec7 th\u1ed1ng x\u1ea3.<\/p><h2 class=\"wp-block-heading\">Th\u00e9p kh\u00f4ng g\u1ec9 304L l\u00e0 g\u00ec?<\/h2><p>Th\u00e9p kh\u00f4ng g\u1ec9 304L l\u00e0 h\u1ee3p kim r\u1eafn, m\u00e0u x\u00e1m b\u1ea1c \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb s\u1eaft 70%, crom 18% v\u00e0 niken 8%. \u201cL\u201d l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a \u201cCacbon th\u1ea5p\u201d, v\u1edbi cacbon 0,03%, th\u1ea5p h\u01a1n 304. \u0110i\u1ec1u n\u00e0y ng\u0103n ng\u1eeba s\u1ef1 t\u00edch t\u1ee5 cacbua trong qu\u00e1 tr\u00ecnh h\u00e0n v\u00e0 t\u0103ng kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n. N\u00f3 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t trong m\u00f4i tr\u01b0\u1eddng \u0103n m\u00f2n m\u00e0 kh\u00f4ng c\u1ea7n \u1ee7. Ch\u1ea5t n\u00e0y ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c l\u0129nh v\u1ef1c nh\u01b0 ch\u1ebf bi\u1ebfn h\u00f3a ch\u1ea5t, s\u1ea3n xu\u1ea5t th\u1ef1c ph\u1ea9m v\u00e0 \u0111\u1ed3 u\u1ed1ng v\u00e0 x\u00e2y d\u1ef1ng.<\/p><h2 class=\"wp-block-heading\">S\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 t\u00ednh ch\u1ea5t gi\u1eefa th\u00e9p kh\u00f4ng g\u1ec9 304l v\u00e0 304&nbsp;<\/h2><p>S\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh gi\u1eefa th\u00e9p kh\u00f4ng g\u1ec9 304 v\u00e0 304L n\u1eb1m \u1edf h\u00e0m l\u01b0\u1ee3ng carbon. Nh\u01b0ng c\u00e1c y\u1ebfu t\u1ed1 kh\u00e1c c\u0169ng l\u00e0m ch\u00fang kh\u00e1c bi\u1ec7t. Ph\u1ea7n n\u00e0y s\u1ebd kh\u00e1m ph\u00e1 nh\u1eefng \u0111i\u1ec3m kh\u00e1c bi\u1ec7t n\u00e0y, bao g\u1ed3m c\u00e1c \u0111\u1eb7c t\u00ednh, \u1ee9ng d\u1ee5ng v\u00e0 quy tr\u00ecnh s\u1ea3n xu\u1ea5t c\u1ee7a ch\u00fang, \u0111\u1ec3 gi\u00fap b\u1ea1n ch\u1ecdn \u0111\u00fang lo\u1ea1i.<\/p><h3 class=\"wp-block-heading\">Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a 304 so v\u1edbi 304L (theo Tr\u1ecdng l\u01b0\u1ee3ng%)<\/h3><figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Y\u1ebfu t\u1ed1<\/strong><\/td><td><strong>Th\u00e9p kh\u00f4ng g\u1ec9 304<\/strong><\/td><td><strong>Th\u00e9p kh\u00f4ng g\u1ec9 304L<\/strong><\/td><\/tr><tr><td>Cacbon (C)<\/td><td>\u2264 0,08%<\/td><td>\u2264 0,03%<\/td><\/tr><tr><td>Crom (Cr)<\/td><td>18.0-20.0%<\/td><td>18.0-20.0%<\/td><\/tr><tr><td>Niken (Ni)<\/td><td>8.0-10.5%<\/td><td>8.0-12.0%<\/td><\/tr><tr><td>Mangan (Mn)<\/td><td>\u2264 2,00%<\/td><td>\u2264 2,00%<\/td><\/tr><tr><td>Silic (Si)<\/td><td>\u2264 0,75%<\/td><td>\u2264 0,75%<\/td><\/tr><tr><td>Ph\u1ed1t pho (P)<\/td><td>\u2264 0,045%<\/td><td>\u2264 0,045%<\/td><\/tr><tr><td>L\u01b0u hu\u1ef3nh (S)<\/td><td>\u2264 0,030%<\/td><td>\u2264 0,030%<\/td><\/tr><tr><td>Nit\u01a1 (N)<\/td><td>\u2264 0,10%<\/td><td>\u2264 0,10%<\/td><\/tr><tr><td>Molip\u0111en (Mo)<\/td><td>KH\u00d4NG<\/td><td>KH\u00d4NG<\/td><\/tr><\/tbody><\/table><\/figure><h4 class=\"wp-block-heading\">Ch\u1ed1ng \u0103n m\u00f2n<\/h4><p>304 v\u00e0 304L c\u00f3 g\u1ea7n nh\u01b0 gi\u1ed1ng h\u1ec7t nhau <a href=\"https:\/\/steelprogroup.com\/vi\/stainless-steel\/properties\/corrosion-resistant\/\">kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n<\/a> trong h\u1ea7u h\u1ebft c\u00e1c m\u00f4i tr\u01b0\u1eddng. Tuy nhi\u00ean, h\u00e0m l\u01b0\u1ee3ng carbon th\u1ea5p h\u01a1n c\u1ee7a 304L cung c\u1ea5p kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 t\u1ed1t h\u01a1n ch\u1ed1ng l\u1ea1i s\u1ef1 \u0103n m\u00f2n gi\u1eefa c\u00e1c h\u1ea1t, \u0111\u1eb7c bi\u1ec7t l\u00e0 sau khi h\u00e0n ho\u1eb7c ti\u1ebfp x\u00fac v\u1edbi nhi\u1ec7t.<\/p><h4 class=\"wp-block-heading\">Kh\u1ea3 n\u0103ng h\u00e0n<\/h4><p>304L cung c\u1ea5p t\u1ed1t h\u01a1n <a href=\"https:\/\/steelprogroup.com\/vi\/stainless-steel\/welding\/\">kh\u1ea3 n\u0103ng h\u00e0n<\/a> h\u01a1n 304. Kh\u00f4ng c\u1ea7n \u1ee7 sau khi h\u00e0n, gi\u00fap gi\u1ea3m nguy c\u01a1 \u0103n m\u00f2n t\u1ea1i khu v\u1ef1c m\u1ed1i h\u00e0n, trong khi 304 c\u00f3 th\u1ec3 c\u1ea7n \u1ee7 \u0111\u1ec3 duy tr\u00ec kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n sau khi h\u00e0n.<\/p><h3 class=\"wp-block-heading\">T\u00ednh ch\u1ea5t v\u1eadt l\u00fd c\u1ee7a 304 so v\u1edbi 304L<\/h3><figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>T\u00e0i s\u1ea3n<\/strong><\/td><td><strong>Th\u00e9p kh\u00f4ng g\u1ec9 304<\/strong><\/td><td><strong>Th\u00e9p kh\u00f4ng g\u1ec9 304L<\/strong><\/td><\/tr><tr><td>T\u1ec9 tr\u1ecdng<\/td><td>8,0 g\/cm\u00b3<\/td><td>8,0 g\/cm\u00b3<\/td><\/tr><tr><td>\u0110i\u1ec3m n\u00f3ng ch\u1ea3y<\/td><td>1400\u00b0C \u2013 1450\u00b0C<\/td><td>1400\u00b0C \u2013 1450\u00b0C<\/td><\/tr><tr><td>\u0110\u1ed9 d\u1eabn nhi\u1ec7t<\/td><td>16,2 W\/m\u00b7K \u1edf 100\u00b0C<\/td><td>16,2 W\/m\u00b7K \u1edf 100\u00b0C<\/td><\/tr><tr><td>M\u00f4 \u0111un \u0111\u00e0n h\u1ed3i<\/td><td>193 GPa<\/td><td>193 GPa<\/td><\/tr><tr><td>\u0110\u1ed9 b\u1ec1n k\u00e9o<\/td><td>~515MPa<\/td><td>~485MPa<\/td><\/tr><\/tbody><\/table><\/figure><h4 class=\"wp-block-heading\">T\u1ec9 tr\u1ecdng<\/h4><p>C\u1ea3 th\u00e9p kh\u00f4ng g\u1ec9 304 v\u00e0 304L \u0111\u1ec1u c\u00f3 m\u1eadt \u0111\u1ed9 8,0 g\/cm\u00b3, cho th\u1ea5y ch\u00fang c\u00f3 c\u00f9ng tr\u1ecdng l\u01b0\u1ee3ng tr\u00ean m\u1ed9t \u0111\u01a1n v\u1ecb th\u1ec3 t\u00edch, khi\u1ebfn ch\u00fang ph\u00f9 h\u1ee3p nh\u01b0 nhau cho c\u00e1c \u1ee9ng d\u1ee5ng c\u1ea7n c\u00e2n nh\u1eafc \u0111\u1ebfn tr\u1ecdng l\u01b0\u1ee3ng.<\/p><h4 class=\"wp-block-heading\">\u0110i\u1ec3m n\u00f3ng ch\u1ea3y<\/h4><p>\u0110i\u1ec3m n\u00f3ng ch\u1ea3y c\u1ee7a ch\u00fang n\u1eb1m trong kho\u1ea3ng t\u1eeb 1400\u00b0C \u0111\u1ebfn 1450\u00b0C, cho ph\u00e9p c\u1ea3 hai v\u1eadt li\u1ec7u ho\u1ea1t \u0111\u1ed9ng t\u1ed1t \u1edf nhi\u1ec7t \u0111\u1ed9 cao m\u00e0 kh\u00f4ng l\u00e0m m\u1ea5t t\u00ednh to\u00e0n v\u1eb9n v\u1ec1 m\u1eb7t c\u1ea5u tr\u00fac.<\/p><h4 class=\"wp-block-heading\">\u0110\u1ed9 d\u1eabn nhi\u1ec7t v\u00e0 m\u00f4 \u0111un \u0111\u00e0n h\u1ed3i<\/h4><p>\u0110\u1ed9 d\u1eabn nhi\u1ec7t c\u1ee7a c\u1ea3 hai l\u00e0 16,2 W\/m\u00b7K \u1edf 100\u00b0C, ngh\u0129a l\u00e0 ch\u00fang truy\u1ec1n nhi\u1ec7t v\u1edbi c\u00f9ng t\u1ed1c \u0111\u1ed9. Ngo\u00e0i ra, m\u00f4 \u0111un \u0111\u00e0n h\u1ed3i c\u1ee7a ch\u00fang l\u00e0 193 GPa, mang l\u1ea1i cho c\u1ea3 hai \u0111\u1ed9 c\u1ee9ng v\u00e0 kh\u1ea3 n\u0103ng tr\u1edf l\u1ea1i h\u00ecnh d\u1ea1ng ban \u0111\u1ea7u sau khi bi\u1ebfn d\u1ea1ng.<\/p><h3 class=\"wp-block-heading\">T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a 304 so v\u1edbi 304L<\/h3><figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>T\u00e0i s\u1ea3n<\/strong><\/td><td><strong>Th\u00e9p kh\u00f4ng g\u1ec9 304<\/strong><\/td><td><strong>Th\u00e9p kh\u00f4ng g\u1ec9 304L<\/strong><\/td><\/tr><tr><td>\u0110\u1ed9 b\u1ec1n k\u00e9o<\/td><td>515MPa<\/td><td>485MPa<\/td><\/tr><tr><td>S\u1ee9c ch\u1ecbu l\u1ef1c<\/td><td>205MPa<\/td><td>170MPa<\/td><\/tr><tr><td>\u0110\u1ed9 gi\u00e3n d\u00e0i khi \u0111\u1ee9t<\/td><td>40%<\/td><td>40%<\/td><\/tr><tr><td>\u0110\u1ed9 c\u1ee9ng (Rockwell B)<\/td><td>82<\/td><td>82<\/td><\/tr><tr><td>\u0110\u1ed9 b\u1ec1n va \u0111\u1eadp<\/td><td>Cao<\/td><td>Cao<\/td><\/tr><\/tbody><\/table><\/figure><p>\u0110\u1ed9 b\u1ec1n k\u00e9o v\u00e0 \u0111\u1ed9 b\u1ec1n k\u00e9o cao h\u01a1n c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 304 l\u00e0m cho n\u00f3 l\u00fd t\u01b0\u1edfng cho c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi kh\u1eaft khe nh\u01b0 c\u00e1c th\u00e0nh ph\u1ea7n k\u1ebft c\u1ea5u v\u00e0 thi\u1ebft b\u1ecb h\u1ea1ng n\u1eb7ng. N\u00f3 c\u00f3 \u0111\u1ed9 b\u1ec1n v\u01b0\u1ee3t tr\u1ed9i khi ch\u1ecbu \u00e1p l\u1ef1c. <strong>Trong khi \u0111\u00f3, linh ki\u1ec7n 304 \u00edt c\u00f3 kh\u1ea3 n\u0103ng b\u1ecb bi\u1ebfn d\u1ea1ng ho\u1eb7c v\u1ee1 khi ch\u1ecbu t\u1ea3i h\u01a1n so v\u1edbi linh ki\u1ec7n 304L, lo\u1ea1i linh ki\u1ec7n d\u1ec5 b\u1ecb bi\u1ebfn d\u1ea1ng h\u01a1n do c\u00f3 \u0111\u1ed9 b\u1ec1n th\u1ea5p h\u01a1n.<\/strong><\/p><h3 class=\"wp-block-heading\">T\u1ea1i sao n\u00ean s\u1eed d\u1ee5ng th\u00e9p kh\u00f4ng g\u1ec9 304L?<\/h3><p>304L \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng m\u1eb7c d\u00f9 c\u00f3 \u0111\u1ed9 b\u1ec1n th\u1ea5p h\u01a1n v\u00ec n\u00f3 ch\u1ed1ng \u0103n m\u00f2n gi\u1eefa c\u00e1c h\u1ea1t t\u1ed1t h\u01a1n, \u0111\u1eb7c bi\u1ec7t l\u00e0 sau khi h\u00e0n. H\u00e0m l\u01b0\u1ee3ng carbon th\u1ea5p c\u1ee7a n\u00f3 ng\u0103n ng\u1eeba s\u1ef1 k\u1ebft t\u1ee7a cacbua, l\u00e0m cho n\u00f3 l\u00fd t\u01b0\u1edfng cho c\u00e1c b\u1ed9 ph\u1eadn h\u00e0n m\u00e0 kh\u00f4ng c\u1ea7n \u1ee7 sau khi h\u00e0n, m\u1eb7c d\u00f9 304 m\u1ea1nh h\u01a1n.<\/p><h2 class=\"wp-block-heading\">S\u1ea3n xu\u1ea5t ch\u1ebf bi\u1ebfn 304 v\u00e0 304L<\/h2><p>Th\u00e9p kh\u00f4ng g\u1ec9 304 v\u00e0 304L \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t t\u01b0\u01a1ng t\u1ef1 nhau, nh\u01b0ng s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 h\u00e0m l\u01b0\u1ee3ng carbon c\u1ee7a ch\u00fang \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn m\u1ed9t s\u1ed1 b\u01b0\u1edbc s\u1ea3n xu\u1ea5t, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong h\u00e0n v\u00e0 ch\u1ed1ng \u0103n m\u00f2n. Vi\u1ec7c n\u1eafm b\u1eaft c\u00e1c quy tr\u00ecnh n\u00e0y l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 ch\u1ecdn \u0111\u00fang lo\u1ea1i.<\/p><h3 class=\"wp-block-heading\">H\u00e0n<\/h3><p><strong>304:<\/strong> C\u1ea7n \u0111i\u1ec1u ch\u1ec9nh ch\u00ednh x\u00e1c l\u01b0\u1ee3ng nhi\u1ec7t \u0111\u1ea7u v\u00e0o \u0111\u1ec3 ng\u0103n ng\u1eeba s\u1ef1 h\u00ecnh th\u00e0nh cacbua, c\u00f3 th\u1ec3 g\u00e2y ra s\u1ef1 \u0103n m\u00f2n \u1edf c\u00e1c v\u00f9ng h\u00e0n. \u1ee6 sau khi h\u00e0n th\u01b0\u1eddng \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u \u0111\u1ec3 l\u1ea5y l\u1ea1i kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n.<\/p><p><strong>304L:<\/strong> Do h\u00e0m l\u01b0\u1ee3ng carbon th\u1ea5p n\u00ean 304L \u00edt b\u1ecb h\u00ecnh th\u00e0nh cacbua trong qu\u00e1 tr\u00ecnh h\u00e0n. <strong>\u0110i\u1ec1u n\u00e0y cho ph\u00e9p h\u00e0n m\u00e0 kh\u00f4ng c\u1ea7n \u1ee7 sau khi h\u00e0n<\/strong>, gi\u00fap cho vi\u1ec7c h\u00e0n tr\u1edf n\u00ean thu\u1eadn ti\u1ec7n h\u01a1n.<\/p><h3 class=\"wp-block-heading\">X\u1eed l\u00fd nhi\u1ec7t<\/h3><p><strong>304:<\/strong> C\u00f3 th\u1ec3 c\u1ea7n \u1ee7 sau khi t\u1ea1o h\u00ecnh ho\u1eb7c h\u00e0n \u0111\u1ec3 gi\u1ea3m \u1ee9ng su\u1ea5t b\u00ean trong v\u00e0 ph\u1ee5c h\u1ed3i kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n.<\/p><p><strong>304L:<\/strong> Th\u00f4ng th\u01b0\u1eddng kh\u00f4ng c\u1ea7n \u1ee7 sau khi h\u00e0n do h\u00e0m l\u01b0\u1ee3ng carbon th\u1ea5p h\u01a1n, gi\u00fap gi\u1ea3m nguy c\u01a1 nh\u1ea1y c\u1ea3m.<\/p><h3 class=\"wp-block-heading\">Kh\u1ea3 n\u0103ng gia c\u00f4ng<\/h3><p><strong>304:<\/strong> C\u1ee9ng h\u01a1n m\u1ed9t ch\u00fat v\u00e0 d\u1ec5 b\u1ecb bi\u1ebfn d\u1ea1ng khi gia c\u00f4ng h\u01a1n so v\u1edbi 304L, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 gia c\u00f4ng v\u00e0 \u0111\u1ed9 m\u00e0i m\u00f2n c\u1ee7a d\u1ee5ng c\u1ee5.<\/p><p><strong>304L:<\/strong> D\u1ec5 gia c\u00f4ng h\u01a1n 304, \u00edt ph\u1ea3i t\u00f4i luy\u1ec7n h\u01a1n, ph\u00f9 h\u1ee3p h\u01a1n cho c\u00e1c ho\u1ea1t \u0111\u1ed9ng gia c\u00f4ng ph\u1ee9c t\u1ea1p.<\/p><p>T\u00f3m l\u1ea1i, c\u00e1c quy tr\u00ecnh s\u1ea3n xu\u1ea5t cho 304 v\u00e0 304L ch\u1ee7 y\u1ebfu l\u00e0 gi\u1ed1ng nhau, \u0111\u1eb7c bi\u1ec7t l\u00e0 v\u1ec1 t\u00ednh ch\u1ea5t v\u1eadt li\u1ec7u, ph\u01b0\u01a1ng ph\u00e1p x\u1eed l\u00fd v\u00e0 \u1ee9ng d\u1ee5ng. Tuy nhi\u00ean, ch\u00fang kh\u00e1c nhau \u1edf <strong>hi\u1ec7u su\u1ea5t h\u00e0n, x\u1eed l\u00fd nhi\u1ec7t v\u00e0 gia c\u00f4ng<\/strong>. Vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u ph\u00f9 h\u1ee3p ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a \u1ee9ng d\u1ee5ng.<\/p><h4 class=\"wp-block-heading\">Chi ph\u00ed c\u1ee7a 304 so v\u1edbi 304L<\/h4><p>S\u1ef1 ch\u00eanh l\u1ec7ch v\u1ec1 chi ph\u00ed gi\u1eefa th\u00e9p kh\u00f4ng g\u1ec9 304 v\u00e0 304L th\u01b0\u1eddng l\u00e0 nh\u1ecf. Tuy nhi\u00ean, 304L \u0111\u1eaft h\u01a1n m\u1ed9t ch\u00fat do c\u1ea7n ph\u1ea3i x\u1eed l\u00fd th\u00eam \u0111\u1ec3 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng h\u00e0n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n gi\u1eefa c\u00e1c h\u1ea1t, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong c\u00e1c k\u1ebft c\u1ea5u h\u00e0n. M\u1eb7c d\u00f9 gi\u00e1 t\u0103ng nh\u1eb9, nh\u01b0ng nh\u1eefng l\u1ee3i th\u1ebf l\u00e2u d\u00e0i c\u1ee7a 304L trong m\u1ed9t s\u1ed1 m\u00f4i tr\u01b0\u1eddng nh\u1ea5t \u0111\u1ecbnh c\u00f3 th\u1ec3 b\u00f9 \u0111\u1eafp cho chi ph\u00ed ban \u0111\u1ea7u cao h\u01a1n.<\/p><h2 class=\"wp-block-heading\">C\u00e1c c\u1ea5p \u0111\u1ed9 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng c\u1ee7a 304 v\u00e0 304L<\/h2><p>Vui l\u00f2ng tham kh\u1ea3o b\u1ea3ng c\u00e1c lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 304 v\u00e0 304L t\u01b0\u01a1ng \u0111\u01b0\u01a1ng c\u1ee7a ch\u00fang t\u00f4i theo c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c gia v\u00e0 qu\u1ed1c t\u1ebf c\u00f3 li\u00ean quan.<\/p><figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Qu\u1ed1c gia\/Ti\u00eau chu\u1ea9n<\/strong><\/td><td><strong>\u0110\u1eb7c \u0111i\u1ec3m k\u1ef9 thu\u1eadt<\/strong><\/td><td><strong>L\u1edbp (304)<\/strong><\/td><td><strong>C\u1ea5p (304L)<\/strong><\/td><\/tr><tr><td>Hoa K\u1ef3<\/td><td>Ti\u00eau chu\u1ea9n ASTM A240, Ti\u00eau chu\u1ea9n ASTM A312<\/td><td>304<\/td><td>304L<\/td><\/tr><tr><td>Trung Qu\u1ed1c<\/td><td>Ti\u00eau chu\u1ea9n GB\/T 1220, Ti\u00eau chu\u1ea9n GB\/T 14975<\/td><td>0Cr18Ni9<\/td><td>00Cr19Ni10<\/td><\/tr><tr><td>Nh\u1eadt B\u1ea3n<\/td><td>Ti\u00eau chu\u1ea9n G4304, G4305<\/td><td>SUS304<\/td><td>SUS304L<\/td><\/tr><tr><td>Qu\u1ed1c t\u1ebf<\/td><td>Ti\u00eau chu\u1ea9n ISO15510<\/td><td>X5CrNi18-10<\/td><td>X2CrNi19-11<\/td><\/tr><tr><td>Ch\u00e2u \u00c2u<\/td><td>EN 10088-2<\/td><td>1.4301<\/td><td>1.4307<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">C\u00e1c lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 304 kh\u00e1c<\/h2><p>Th\u00e9p kh\u00f4ng g\u1ec9 304 bao g\u1ed3m nhi\u1ec1u lo\u1ea1i ph\u1ee5 c\u1ea5p kh\u00e1c nhau cung c\u1ea5p c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ri\u00eang bi\u1ec7t cho nhi\u1ec1u m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng kh\u00e1c nhau. C\u00e1c lo\u1ea1i ph\u1ee5 c\u1ea5p n\u00e0y bao g\u1ed3m 304H v\u00e0 304N, m\u1ed7i lo\u1ea1i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ri\u00eang cho c\u00e1c y\u00eau c\u1ea7u ri\u00eang bi\u1ec7t trong nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p kh\u00e1c nhau.<\/p><h3 class=\"wp-block-heading\">304H<\/h3><p>L\u1edbp n\u1ec1n n\u00e0y ch\u1ee9a nhi\u1ec1u carbon h\u01a1n 304 ti\u00eau chu\u1ea9n, t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 b\u1ec1n \u1edf nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng oxy h\u00f3a. N\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng nh\u01b0 ph\u00e1t \u0111i\u1ec7n v\u00e0 x\u1eed l\u00fd h\u00f3a ch\u1ea5t, n\u01a1i nhi\u1ec7t \u0111\u1ed9 cao l\u00e0 m\u1ed1i quan t\u00e2m.<\/p><h3 class=\"wp-block-heading\">304N<\/h3><p>\u0110\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi \u0111\u1ed9 b\u1ec1n t\u0103ng c\u01b0\u1eddng nh\u1edd b\u1ed5 sung nit\u01a1, 304N c\u00f3 t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t h\u01a1n so v\u1edbi 304 ti\u00eau chu\u1ea9n. N\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng k\u1ebft c\u1ea5u c\u00f3 \u0111\u1ed9 b\u1ec1n cao v\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n quan tr\u1ecdng c\u1ea7n c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t.<\/p><h2 class=\"wp-block-heading\">\u1ee8ng d\u1ee5ng c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 304 so v\u1edbi 304L<\/h2><p>M\u1eb7c d\u00f9 th\u00e9p kh\u00f4ng g\u1ec9 304 v\u00e0 304L c\u00f3 \u0111\u1eb7c t\u00ednh h\u00f3a h\u1ecdc v\u00e0 v\u1eadt l\u00fd t\u01b0\u01a1ng t\u1ef1 nhau, nh\u01b0ng h\u00e0m l\u01b0\u1ee3ng carbon kh\u00e1c nhau c\u1ee7a ch\u00fang d\u1eabn \u0111\u1ebfn s\u1ef1 kh\u00e1c bi\u1ec7t trong \u1ee9ng d\u1ee5ng c\u1ee7a ch\u00fang. Nh\u1eefng kh\u00e1c bi\u1ec7t n\u00e0y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn n\u01a1i s\u1eed d\u1ee5ng hi\u1ec7u qu\u1ea3 nh\u1ea5t c\u1ee7a t\u1eebng lo\u1ea1i.<\/p><h3 class=\"wp-block-heading\">\u1ee8ng d\u1ee5ng c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 304<\/h3><ul class=\"wp-block-list\"><li><strong>Th\u00e0nh ph\u1ea7n c\u1ea5u tr\u00fac:<\/strong> \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng trong x\u00e2y d\u1ef1ng khung, c\u1ea7u v\u00e0 c\u00e1c k\u1ebft c\u1ea5u ch\u1ecbu l\u1ef1c.<\/li>\n\n<li><strong>Ph\u1ee5 t\u00f9ng \u00f4 t\u00f4:<\/strong> Ph\u1ed5 bi\u1ebfn trong h\u1ec7 th\u1ed1ng x\u1ea3, b\u1ed9 ph\u1eadn \u0111\u1ed9ng c\u01a1 v\u00e0 trang tr\u00ed.<br><strong>Thi\u1ebft b\u1ecb c\u00f4ng nghi\u1ec7p:<\/strong> Th\u00edch h\u1ee3p cho b\u1ec3 ch\u1ee9a, \u0111\u01b0\u1eddng \u1ed1ng v\u00e0 m\u00e1y m\u00f3c ti\u1ebfp x\u00fac v\u1edbi nhi\u1ec1u lo\u1ea1i h\u00f3a ch\u1ea5t kh\u00e1c nhau.<\/li>\n\n<li><strong>S\u1ea3n ph\u1ea9m ti\u00eau d\u00f9ng:<\/strong> C\u00f3 trong b\u1ed3n r\u1eeda nh\u00e0 b\u1ebfp, \u0111\u1ed3 n\u1ea5u n\u01b0\u1edbng v\u00e0 \u0111\u1ed3 gia d\u1ee5ng.<br><strong>Thi\u1ebft b\u1ecb y t\u1ebf:<\/strong> \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng trong d\u1ee5ng c\u1ee5 ph\u1eabu thu\u1eadt, d\u1ee5ng c\u1ee5 nha khoa v\u00e0 thi\u1ebft b\u1ecb b\u1ec7nh vi\u1ec7n.<\/li>\n\n<li><strong>Thi\u1ebft b\u1ecb ch\u1ebf bi\u1ebfn th\u1ef1c ph\u1ea9m<\/strong>: \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c thi\u1ebft b\u1ecb l\u01b0u tr\u1eef, x\u1eed l\u00fd v\u00e0 ch\u1ebf bi\u1ebfn th\u1ef1c ph\u1ea9m, ch\u1eb3ng h\u1ea1n nh\u01b0 h\u1ed9p \u0111\u1ef1ng, \u0111\u1ed3 d\u00f9ng v\u00e0 h\u1ec7 th\u1ed1ng b\u0103ng t\u1ea3i.<\/li><\/ul><h3 class=\"wp-block-heading\">\u1ee8ng d\u1ee5ng c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 304L<\/h3><ul class=\"wp-block-list\"><li><strong>C\u1ea5u tr\u00fac h\u00e0n:<\/strong> \u0110\u01b0\u1ee3c \u01b0a chu\u1ed9ng trong \u0111\u01b0\u1eddng \u1ed1ng h\u00e0n, b\u1ec3 ch\u1ee9a v\u00e0 b\u1ed9 trao \u0111\u1ed5i nhi\u1ec7t.<br><strong>X\u1eed l\u00fd h\u00f3a h\u1ecdc:<\/strong> \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c thi\u1ebft b\u1ecb x\u1eed l\u00fd h\u00f3a ch\u1ea5t \u0103n m\u00f2n, nh\u01b0 l\u00f2 ph\u1ea3n \u1ee9ng v\u00e0 b\u1ec3 tr\u1ed9n.<\/li>\n\n<li><strong>M\u00f4i tr\u01b0\u1eddng bi\u1ec3n:<\/strong> Th\u00edch h\u1ee3p cho \u0111\u00f3ng t\u00e0u, gi\u00e0n khoan ngo\u00e0i kh\u01a1i v\u00e0 \u0111\u01b0\u1eddng \u1ed1ng d\u01b0\u1edbi n\u01b0\u1edbc.<\/li>\n\n<li><strong>Thi\u1ebft b\u1ecb d\u01b0\u1ee3c ph\u1ea9m:<\/strong> \u0110\u01b0\u1ee3c \u00e1p d\u1ee5ng trong thi\u1ebft b\u1ecb s\u1ea3n xu\u1ea5t thu\u1ed1c n\u01a1i \u0111\u1ed9 tinh khi\u1ebft l\u00e0 r\u1ea5t quan tr\u1ecdng.<\/li>\n\n<li><strong>Ch\u1ebf bi\u1ebfn th\u1ef1c ph\u1ea9m:<\/strong> Th\u00edch h\u1ee3p \u0111\u1ec3 x\u1eed l\u00fd th\u1ef1c ph\u1ea9m v\u00e0 \u0111\u1ed3 u\u1ed1ng c\u00f3 t\u00ednh axit, ch\u1eb3ng h\u1ea1n nh\u01b0 b\u1ec3 l\u00ean men v\u00e0 \u0111\u01a1n v\u1ecb l\u01b0u tr\u1eef th\u1ef1c ph\u1ea9m.<\/li><\/ul><h3 class=\"wp-block-heading\">\u1ee8ng d\u1ee5ng chung cho c\u1ea3 304 v\u00e0 304L<\/h3><ul class=\"wp-block-list\"><li><strong>C\u00e1c y\u1ebfu t\u1ed1 ki\u1ebfn tr\u00fac:<\/strong> \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng trong \u1ed1p t\u01b0\u1eddng, lan can v\u00e0 m\u1eb7t ti\u1ec1n trang tr\u00ed.<\/li>\n\n<li><strong>B\u1ed9 trao \u0111\u1ed5i nhi\u1ec7t:<\/strong> \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c h\u1ec7 th\u1ed1ng ph\u00e1t \u0111i\u1ec7n v\u00e0 HVAC.<\/li>\n\n<li><strong>B\u00ecnh ch\u1ecbu \u00e1p su\u1ea5t:<\/strong> C\u00f3 trong n\u1ed3i h\u01a1i, b\u00ecnh gas v\u00e0 b\u00ecnh ch\u1ee9a \u00e1p su\u1ea5t c\u00f4ng nghi\u1ec7p.<\/li>\n\n<li><strong>H\u1ec7 th\u1ed1ng \u0111\u01b0\u1eddng \u1ed1ng:<\/strong> \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c nh\u00e0 m\u00e1y x\u1eed l\u00fd n\u01b0\u1edbc, nh\u00e0 m\u00e1y l\u1ecdc d\u1ea7u v\u00e0 h\u1ec7 th\u1ed1ng ph\u00e2n ph\u1ed1i.<\/li>\n\n<li><strong>Thi\u1ebft b\u1ecb th\u1ef1c ph\u1ea9m v\u00e0 \u0111\u1ed3 u\u1ed1ng:<\/strong> Ph\u1ed5 bi\u1ebfn trong s\u1ea3n xu\u1ea5t bia, ch\u1ebf bi\u1ebfn s\u1eefa v\u00e0 \u0111\u1ed3 d\u00f9ng n\u1ea5u \u0103n.<\/li><\/ul><p>T\u00f3m l\u1ea1i, 304 l\u00e0 t\u1ed1t nh\u1ea5t cho c\u00e1c \u1ee9ng d\u1ee5ng c\u00f3 \u0111\u1ed9 b\u1ec1n cao nh\u01b0 c\u00e1c th\u00e0nh ph\u1ea7n c\u1ea5u tr\u00fac, trong khi 304L l\u00e0 l\u00fd t\u01b0\u1edfng cho m\u00f4i tr\u01b0\u1eddng h\u00e0n v\u00e0 \u0103n m\u00f2n. C\u1ea3 hai \u0111\u1ec1u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong ki\u1ebfn tr\u00fac, ch\u1ebf bi\u1ebfn th\u1ef1c ph\u1ea9m v\u00e0 h\u1ec7 th\u1ed1ng \u0111\u01b0\u1eddng \u1ed1ng do c\u00f3 chung c\u00e1c \u0111\u1eb7c t\u00ednh.<\/p><h2 class=\"wp-block-heading\">304L c\u00f3 c\u1ee9ng h\u01a1n 304 kh\u00f4ng?<\/h2><p>Kh\u00f4ng, 304L kh\u00f4ng c\u1ee9ng h\u01a1n 304. 304L c\u00f3 \u0111\u1ed9 b\u1ec1n k\u00e9o v\u00e0 \u0111\u1ed9 b\u1ec1n ch\u1ea3y th\u1ea5p h\u01a1n m\u1ed9t ch\u00fat so v\u1edbi 304 do h\u00e0m l\u01b0\u1ee3ng carbon th\u1ea5p h\u01a1n.<\/p><h2 class=\"wp-block-heading\">S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa 304 v\u00e0 304L Dual Certified l\u00e0 g\u00ec?<\/h2><p>Th\u00e9p kh\u00f4ng g\u1ec9 304\/304L \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn k\u00e9p \u0111\u00e1p \u1ee9ng c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt cho c\u1ea3 hai lo\u1ea1i. N\u00f3 c\u00f3 th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a 304L nh\u01b0ng \u0111\u00e1p \u1ee9ng c\u00e1c t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a 304.<\/p><h2 class=\"wp-block-heading\">Th\u00e9p kh\u00f4ng g\u1ec9 304 c\u00f3 b\u1ec1n kh\u00f4ng?<\/h2><p>Th\u00e9p kh\u00f4ng g\u1ec9 304 c\u00f3 \u0111\u1ed9 b\u1ec1n k\u00e9o kho\u1ea3ng 515 MPa (75 ksi) v\u00e0 \u0111\u1ed9 b\u1ec1n ch\u1ea3y kho\u1ea3ng 215 MPa (31 ksi). \u0110\u1ed9 b\u1ec1n n\u00e0y l\u00e0m cho n\u00f3 ph\u00f9 h\u1ee3p v\u1edbi nhi\u1ec1u \u1ee9ng d\u1ee5ng k\u1ebft c\u1ea5u kh\u00e1c nhau, v\u00ec n\u00f3 c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c \u1ee9ng su\u1ea5t v\u00e0 \u00e1p su\u1ea5t \u0111\u00e1ng k\u1ec3 m\u00e0 kh\u00f4ng b\u1ecb bi\u1ebfn d\u1ea1ng, \u0111\u1ed3ng th\u1eddi c\u0169ng c\u00f3 \u0111\u1ed9 d\u1ebbo v\u00e0 \u0111\u1ed9 b\u1ec1n t\u1ed1t.<\/p><h2 class=\"wp-block-heading\">Th\u00e9p kh\u00f4ng g\u1ec9 304 \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb g\u00ec?<\/h2><p>Th\u00e9p kh\u00f4ng g\u1ec9 304 bao g\u1ed3m crom 18-20% v\u00e0 niken 8-10,5%, c\u00f9ng v\u1edbi m\u1ed9t l\u01b0\u1ee3ng nh\u1ecf cacbon, mangan, silic v\u00e0 c\u00e1c nguy\u00ean t\u1ed1 kh\u00e1c. H\u1ed7n h\u1ee3p \u0111\u1eb7c bi\u1ec7t n\u00e0y mang l\u1ea1i kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n, kh\u1ea3 n\u0103ng \u0111\u1ecbnh h\u00ecnh v\u00e0 \u0111\u1ed9 b\u1ec1n t\u1ed5ng th\u1ec3 tuy\u1ec7t v\u1eddi, khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh m\u1ed9t trong nh\u1eefng lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t.<\/p><h2 class=\"wp-block-heading\">T\u00f3m t\u1eaft v\u00e0 K\u1ebft lu\u1eadn<\/h2><p>Th\u00e9p kh\u00f4ng g\u1ec9 304 v\u00e0 304L \u0111\u1ec1u ch\u1ed1ng \u0103n m\u00f2n v\u00e0 \u0111a n\u0103ng. S\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh l\u00e0 h\u00e0m l\u01b0\u1ee3ng carbon: 304 c\u00f3 t\u1edbi 0,08%, trong khi 304L c\u00f3 t\u1edbi 0,03%. \u0110i\u1ec1u n\u00e0y l\u00e0m cho 304L t\u1ed1t h\u01a1n cho m\u00f4i tr\u01b0\u1eddng h\u00e0n v\u00e0 \u0103n m\u00f2n, m\u1eb7c d\u00f9 n\u00f3 y\u1ebfu h\u01a1n m\u1ed9t ch\u00fat.<\/p><p>304 l\u00e0 t\u1ed1t nh\u1ea5t cho c\u00e1c \u1ee9ng d\u1ee5ng c\u00f3 \u0111\u1ed9 b\u1ec1n cao, trong khi 304L l\u00fd t\u01b0\u1edfng cho h\u00e0n v\u00e0 ch\u1ed1ng \u0103n m\u00f2n. C\u1ea3 hai \u0111\u1ec1u th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong ki\u1ebfn tr\u00fac, ch\u1ebf bi\u1ebfn th\u1ef1c ph\u1ea9m v\u00e0 \u0111\u01b0\u1eddng \u1ed1ng.<\/p><p><a href=\"https:\/\/steelprogroup.com\/vi\">T\u1eadp \u0111o\u00e0n SteelPRO<\/a> cung c\u1ea5p m\u1ed9t l\u01b0\u1ee3ng l\u1edbn th\u00e9p kh\u00f4ng g\u1ec9 304 v\u00e0 304L \u1edf d\u1ea1ng t\u1ea5m, \u1ed1ng v\u00e0 thanh tr\u00f2n. \u0110\u1ed1i v\u1edbi c\u00e1c lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 kh\u00e1c, h\u00e3y truy c\u1eadp <a href=\"https:\/\/steelprogroup.com\/vi\/blog\/\">trang blog<\/a>. <a href=\"https:\/\/steelprogroup.com\/vi\/contact-us\/\">Li\u00ean h\u1ec7 v\u1edbi c\u00e1c chuy\u00ean gia c\u1ee7a ch\u00fang t\u00f4i \u0111\u1ec3 c\u00f3 b\u00e1o gi\u00e1 t\u1ed1t nh\u1ea5t<\/a>!<\/p><p><\/p>","protected":false},"excerpt":{"rendered":"<p>Stainless steel is valued for its corrosion resistance and high-temperature durability. However, similar names can create confusion when differentiating between [&hellip;]<\/p>","protected":false},"author":1,"featured_media":10404,"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":[4192,4191,112],"tags":[],"class_list":["post-10409","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-comparisons","category-grades","category-stainless-steel"],"acf":[],"_links":{"self":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/10409","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=10409"}],"version-history":[{"count":0,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/10409\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media\/10404"}],"wp:attachment":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media?parent=10409"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/categories?post=10409"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/tags?post=10409"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}