{"id":9353,"date":"2024-09-11T14:30:20","date_gmt":"2024-09-11T06:30:20","guid":{"rendered":"https:\/\/app11147.cloudwayssites.com\/?p=9353"},"modified":"2024-11-14T11:34:46","modified_gmt":"2024-11-14T03:34:46","slug":"300-series","status":"publish","type":"post","link":"https:\/\/steelprogroup.com\/vi\/stainless-steel\/grades\/300-series\/","title":{"rendered":"Th\u00e9p kh\u00f4ng g\u1ec9 d\u00f2ng 300: Hi\u1ec7u su\u1ea5t, \u1ee8ng d\u1ee5ng, C\u1ea5p \u0111\u1ed9 &amp; So s\u00e1nh"},"content":{"rendered":"<p>Ch\u00fang t\u00f4i s\u1ebd ph\u00e2n t\u00edch chi ti\u1ebft th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc, t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc v\u00e0 t\u00ednh ch\u1ea5t v\u1eadt l\u00fd c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 series 300 v\u00e0 so s\u00e1nh v\u1edbi c\u00e1c series kh\u00e1c nh\u01b0 series 400, series 200 v\u00e0 th\u00e9p kh\u00f4ng g\u1ec9 Duplex \u0111\u1ec3 gi\u00fap b\u1ea1n hi\u1ec3u \u0111\u1ea7y \u0111\u1ee7 v\u1ec1 \u01b0u \u0111i\u1ec3m v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a n\u00f3. Ngo\u00e0i ra, b\u00e0i vi\u1ebft n\u00e0y c\u0169ng s\u1ebd cung c\u1ea5p c\u00e1c m\u1eb9o b\u1ea3o d\u01b0\u1ee1ng cho th\u00e9p kh\u00f4ng g\u1ec9 series 300 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o th\u00e9p lu\u00f4n \u1edf tr\u1ea1ng th\u00e1i t\u1ed1i \u01b0u trong nhi\u1ec1u m\u00f4i tr\u01b0\u1eddng kh\u00e1c nhau.<\/p><h2 class=\"wp-block-heading\">Th\u00e9p kh\u00f4ng g\u1ec9 d\u00f2ng 300 l\u00e0 g\u00ec?<\/h2><p>Th\u00e9p kh\u00f4ng g\u1ec9 lo\u1ea1i 300 l\u00e0 th\u00e9p kh\u00f4ng g\u1ec9 austenit crom-niken, \u0111\u1eb7c \u0111i\u1ec3m ch\u1ee7 y\u1ebfu l\u00e0 h\u00e0m l\u01b0\u1ee3ng Cr (16-20%) v\u00e0 Ni (8-14%) cao, \u0111\u00f4i khi bao g\u1ed3m c\u00e1c nguy\u00ean t\u1ed1 h\u1ee3p kim kh\u00e1c. V\u1edbi t\u00ednh ch\u1ea5t tuy\u1ec7t v\u1eddi, ch\u00fang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c.<\/p><h2 class=\"wp-block-heading\">Th\u00e9p kh\u00f4ng g\u1ec9 d\u00f2ng 300 \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t nh\u01b0 th\u1ebf n\u00e0o?<\/h2><h3 class=\"wp-block-heading\">Luy\u1ec7n kim v\u00e0 \u0111\u00fac<\/h3><p>Qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t th\u00e9p kh\u00f4ng g\u1ec9 series 300 b\u1eaft \u0111\u1ea7u b\u1eb1ng qu\u00e1 tr\u00ecnh n\u1ea5u ch\u1ea3y l\u00f2 h\u1ed3 quang \u0111i\u1ec7n, s\u1eed d\u1ee5ng qu\u1eb7ng s\u1eaft, qu\u1eb7ng crom, qu\u1eb7ng niken v\u00e0 c\u00e1c nguy\u00ean t\u1ed1 h\u1ee3p kim c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao. Nguy\u00ean li\u1ec7u th\u00f4 \u0111\u01b0\u1ee3c tr\u1ed9n, nung n\u00f3ng \u0111\u1ebfn tr\u1ea1ng th\u00e1i n\u00f3ng ch\u1ea3y v\u00e0 \u0111\u00fac th\u00e0nh ph\u00f4i s\u01a1 b\u1ed9, v\u1edbi s\u1ef1 ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd v\u1ec1 nhi\u1ec7t \u0111\u1ed9 v\u00e0 th\u00e0nh ph\u1ea7n h\u1ee3p kim \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng. Sau \u0111\u00f3, ph\u00f4i \u0111\u01b0\u1ee3c x\u1eed l\u00fd nhi\u1ec7t \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a c\u1ea5u tr\u00fac b\u00ean trong v\u00e0 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t. N\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ch\u1ebf bi\u1ebfn th\u00eam th\u00e0nh c\u00e1c s\u1ea3n ph\u1ea9m c\u00f3 h\u00ecnh d\u1ea1ng v\u00e0 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt mong mu\u1ed1n.<\/p><h3 class=\"wp-block-heading\">C\u00e1n n\u00f3ng v\u00e0 c\u00e1n ngu\u1ed9i<\/h3><p>Ph\u00f4i sau khi \u0111\u00fac \u0111\u01b0\u1ee3c c\u00e1n n\u00f3ng, l\u00e0 qu\u00e1 tr\u00ecnh nung ph\u00f4i \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 cao r\u1ed3i \u00e9p th\u00e0nh \u0111\u1ed9 d\u00e0y mong mu\u1ed1n th\u00f4ng qua m\u00e1y c\u00e1n. C\u00e1n n\u00f3ng kh\u00f4ng ch\u1ec9 c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng b\u1ec1 m\u1eb7t c\u1ee7a th\u00e9p m\u00e0 c\u00f2n c\u1ea3i thi\u1ec7n t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a th\u00e9p. \u0110\u1ed9 d\u00e0y v\u00e0 chi\u1ec1u r\u1ed9ng c\u1ee7a th\u00e9p c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c th\u00f4ng qua qu\u00e1 tr\u00ecnh c\u00e1n n\u00f3ng \u0111\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u c\u1ee7a c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c nhau.<\/p><p>C\u00e1n ngu\u1ed9i l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng, cho ph\u00e9p th\u00e9p \u0111\u01b0\u1ee3c bi\u1ebfn \u0111\u1ed5i th\u00e0nh c\u00e1c t\u1ea5m ho\u1eb7c d\u1ea3i m\u1ecfng h\u01a1n, ch\u00ednh x\u00e1c h\u01a1n. Th\u00e9p kh\u00f4ng g\u1ec9 c\u00e1n ngu\u1ed9i c\u00f3 \u0111\u1ed9 b\u1ec1n cao h\u01a1n v\u00e0 b\u1ec1 m\u1eb7t m\u1ecbn h\u01a1n, v\u00e0 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho m\u1ee5c \u0111\u00edch gia c\u00f4ng ch\u00ednh x\u00e1c v\u00e0 trang tr\u00ed.<\/p><h3 class=\"wp-block-heading\">X\u1eed l\u00fd nhi\u1ec7t v\u00e0 x\u1eed l\u00fd b\u1ec1 m\u1eb7t<\/h3><p>X\u1eed l\u00fd nhi\u1ec7t c\u1ea3i thi\u1ec7n c\u00e1c t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc v\u00e0 v\u1eadt l\u00fd c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9, bao g\u1ed3m \u1ee7, l\u00e0m ngu\u1ed9i v\u00e0 ram. \u1ee6 t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 d\u1ebbo v\u00e0 \u0111\u1ed9 dai, l\u00e0m ngu\u1ed9i t\u0103ng \u0111\u1ed9 c\u1ee9ng v\u00e0 \u0111\u1ed9 b\u1ec1n, v\u00e0 ram \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ed9 gi\u00f2n. X\u1eed l\u00fd b\u1ec1 m\u1eb7t nh\u01b0 \u0111\u00e1nh b\u00f3ng l\u00e0m cho b\u1ec1 m\u1eb7t nh\u1eb5n, v\u00e0 m\u1ea1 \u0111i\u1ec7n t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p x\u1eed l\u00fd n\u00e0y c\u00f9ng nhau c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9.<\/p><h2 class=\"wp-block-heading\">Hi\u1ec7u su\u1ea5t c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 d\u00f2ng 300&nbsp;<\/h2><h3 class=\"wp-block-heading\">Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc<\/h3><p>C\u00e1c th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc ch\u00ednh c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 d\u00f2ng 300 bao g\u1ed3m.<\/p><p><strong>Crom (Cr): <\/strong>H\u00e0m l\u01b0\u1ee3ng 16%~20%, h\u00ecnh th\u00e0nh l\u1edbp m\u00e0ng th\u1ee5 \u0111\u1ed9ng ch\u1ed1ng \u0103n m\u00f2n, t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9.<\/p><p><strong>Niken (Ni): <\/strong>H\u00e0m l\u01b0\u1ee3ng 8%~12%, c\u1ea3i thi\u1ec7n \u0111\u1ed9 d\u1ebbo dai v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9, \u1ed5n \u0111\u1ecbnh c\u1ea5u tr\u00fac austenit.<\/p><p><strong>Molypden (Mo): <\/strong>2%~3% trong th\u00e9p kh\u00f4ng g\u1ec9 316, t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n c\u1ee7a 316 trong clorua.<\/p><p><strong>Mangan (Mn): <\/strong>H\u00e0m l\u01b0\u1ee3ng mangan trong th\u00e9p kh\u00f4ng g\u1ec9 series 200 cao h\u01a1n, ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 c\u1ee9ng c\u1ee7a th\u00e9p.<\/p><h3 class=\"wp-block-heading\">T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc<\/h3><p><strong>S\u1ee9c ch\u1ecbu l\u1ef1c<\/strong><\/p><ul class=\"wp-block-list\"><li>Gi\u1edbi h\u1ea1n ch\u1ea3y l\u00e0 s\u1ef1 ph\u1ea3n \u00e1nh gi\u1edbi h\u1ea1n s\u1eed d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a v\u1eadt li\u1ec7u. Gi\u1edbi h\u1ea1n ch\u1ea3y c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 lo\u1ea1i 300 th\u01b0\u1eddng n\u1eb1m trong kho\u1ea3ng 210-250 MPa, so v\u1edbi c\u00e1c lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 kh\u00e1c th\u00ec \u1edf m\u1ee9c trung b\u00ecnh, nh\u01b0ng do c\u00f3 \u0111\u1ed9 d\u1ebbo v\u00e0 kh\u1ea3 n\u0103ng gia c\u00f4ng t\u1ed1t n\u00ean \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u k\u1ebft c\u1ea5u v\u00e0 thi\u1ebft b\u1ecb kh\u00e1c nhau.<\/li><\/ul><p><strong>\u0110\u1ed9 b\u1ec1n k\u00e9o<\/strong><\/p><ul class=\"wp-block-list\"><li>\u0110\u1ed9 b\u1ec1n k\u00e9o cho bi\u1ebft t\u1ea3i tr\u1ecdng t\u1ed1i \u0111a m\u00e0 v\u1eadt li\u1ec7u c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c tr\u01b0\u1edbc khi b\u1ecb \u0111\u1ee9t. Th\u00e9p kh\u00f4ng g\u1ec9 d\u00f2ng 300 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i tr\u1ecdng c\u01a1 h\u1ecdc v\u00e0 l\u1ef1c t\u00e1c \u0111\u1ed9ng v\u01b0\u1ee3t tr\u1ed9i, v\u1edbi \u0111\u1ed9 b\u1ec1n k\u00e9o th\u01b0\u1eddng trong kho\u1ea3ng 500-700 MPa, ph\u00f9 h\u1ee3p cho c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi \u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 ch\u1eafc.<\/li><\/ul><p><strong>\u0110\u1ed9 d\u1ebbo v\u00e0 \u0111\u1ed9 gi\u00e3n d\u00e0i<\/strong><\/p><ul class=\"wp-block-list\"><li>\u0110\u1ed9 d\u1ebbo l\u00e0 kh\u1ea3 n\u0103ng k\u00e9o d\u00e0i d\u01b0\u1edbi \u00e1p su\u1ea5t m\u00e0 kh\u00f4ng b\u1ecb g\u00e3y c\u1ee7a v\u1eadt li\u1ec7u. Th\u00e9p kh\u00f4ng g\u1ec9 d\u00f2ng 300 c\u00f3 \u0111\u1ed9 d\u1ebbo tuy\u1ec7t v\u1eddi, v\u1edbi \u0111\u1ed9 gi\u00e3n d\u00e0i th\u01b0\u1eddng n\u1eb1m trong kho\u1ea3ng 40-60%. \u0110i\u1ec1u n\u00e0y l\u00e0m cho th\u00e9p kh\u00f4ng g\u1ec9 d\u00f2ng 300 d\u1ec5 d\u00e0ng gia c\u00f4ng ngu\u1ed9i th\u00e0nh c\u00e1c h\u00ecnh d\u1ea1ng ph\u1ee9c t\u1ea1p v\u00e0 \u00edt b\u1ecb n\u1ee9t h\u01a1n.<\/li><\/ul><p><strong>\u0110\u1ed9 c\u1ee9ng<\/strong><\/p><ul class=\"wp-block-list\"><li>\u0110\u1ed9 c\u1ee9ng l\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng l\u1ea1i bi\u1ebfn d\u1ea1ng c\u1ee5c b\u1ed9 c\u1ee7a v\u1eadt li\u1ec7u. \u0110\u1ed9 c\u1ee9ng c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 d\u00f2ng 300 th\u01b0\u1eddng n\u1eb1m trong kho\u1ea3ng 80-90 HRB (thang Rockwell B). M\u1eb7c d\u00f9 th\u00e9p kh\u00f4ng g\u1ec9 d\u00f2ng 300 kh\u00f4ng c\u1ee9ng b\u1eb1ng m\u1ed9t s\u1ed1 lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 martensitic, nh\u01b0ng c\u00e1c \u0111\u1eb7c t\u00ednh t\u1ed5ng th\u1ec3 tuy\u1ec7t v\u1eddi c\u1ee7a n\u00f3 b\u00f9 \u0111\u1eafp cho \u0111i\u1ec1u n\u00e0y.<\/li><\/ul><p><strong>\u0110\u1ed9 b\u1ec1n va \u0111\u1eadp<\/strong><\/p><ul class=\"wp-block-list\"><li>\u0110\u1ed9 b\u1ec1n va \u0111\u1eadp \u0111o l\u01b0\u1eddng kh\u1ea3 n\u0103ng ch\u1ed1ng va \u0111\u1eadp \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p m\u00e0 kh\u00f4ng b\u1ecb h\u01b0 h\u1ea1i c\u1ee7a v\u1eadt li\u1ec7u. Th\u00e9p kh\u00f4ng g\u1ec9 d\u00f2ng 300 th\u1ec3 hi\u1ec7n \u0111\u1ed9 b\u1ec1n va \u0111\u1eadp tuy\u1ec7t v\u1eddi \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p. V\u00ed d\u1ee5, th\u00e9p kh\u00f4ng g\u1ec9 304 v\u1eabn c\u00f3 th\u1ec3 duy tr\u00ec \u0111\u1ed9 b\u1ec1n t\u1ed1t \u1edf -196\u00b0C (-320\u00b0F).<\/li><\/ul><h3 class=\"wp-block-heading\">T\u00ednh ch\u1ea5t v\u1eadt l\u00fd<\/h3><p><strong>T\u1ec9 tr\u1ecdng<\/strong><\/p><ul class=\"wp-block-list\"><li>M\u1eadt \u0111\u1ed9 l\u00e0 kh\u1ed1i l\u01b0\u1ee3ng tr\u00ean m\u1ed9t \u0111\u01a1n v\u1ecb th\u1ec3 t\u00edch v\u00e0 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a v\u1eadt li\u1ec7u v\u00e0 l\u1ef1a ch\u1ecdn thi\u1ebft k\u1ebf. M\u1eadt \u0111\u1ed9 c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 series 300 th\u01b0\u1eddng n\u1eb1m trong kho\u1ea3ng 7,90-8,00 g\/cm\u00b3. M\u1eadt \u0111\u1ed9 cao h\u01a1n cung c\u1ea5p c\u1ea5u tr\u00fac v\u1eadt l\u00fd \u1ed5n \u0111\u1ecbnh cho th\u00e9p kh\u00f4ng g\u1ec9 series 300, khi\u1ebfn n\u00f3 tr\u1edf n\u00ean tuy\u1ec7t v\u1eddi trong c\u00e1c \u1ee9ng d\u1ee5ng k\u1ebft c\u1ea5u.<\/li><\/ul><p><strong>\u0110\u1ed9 d\u1eabn nhi\u1ec7t<\/strong><\/p><ul class=\"wp-block-list\"><li>\u0110\u1ed9 d\u1eabn nhi\u1ec7t l\u00e0 kh\u1ea3 n\u0103ng d\u1eabn nhi\u1ec7t c\u1ee7a v\u1eadt li\u1ec7u. \u0110\u1ed9 d\u1eabn nhi\u1ec7t c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 d\u00f2ng 300 t\u01b0\u01a1ng \u0111\u1ed1i th\u1ea5p, th\u01b0\u1eddng n\u1eb1m trong kho\u1ea3ng 15-25 W\/(m\u00b7K). \u0110\u1ed9 d\u1eabn nhi\u1ec7t th\u1ea5p cho ph\u00e9p th\u00e9p kh\u00f4ng g\u1ec9 d\u00f2ng 300 c\u00e1ch nhi\u1ec7t hi\u1ec7u qu\u1ea3 v\u00e0 gi\u1ea3m th\u1ea5t tho\u00e1t nhi\u1ec7t trong m\u00f4i tr\u01b0\u1eddng nhi\u1ec7t \u0111\u1ed9 cao.<\/li><\/ul><p><strong>H\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t<\/strong><\/p><ul class=\"wp-block-list\"><li>H\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t \u0111\u1ec1 c\u1eadp \u0111\u1ebfn m\u1ee9c \u0111\u1ed9 v\u1eadt li\u1ec7u gi\u00e3n n\u1edf v\u1ec1 th\u1ec3 t\u00edch khi \u0111\u01b0\u1ee3c nung n\u00f3ng. H\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 lo\u1ea1i 300 th\u01b0\u1eddng l\u00e0 16-17 \u00d7 10\u207b\u2076 \/K. T\u00ednh ch\u1ea5t n\u00e0y cho ph\u00e9p th\u00e9p kh\u00f4ng g\u1ec9 lo\u1ea1i 300 duy tr\u00ec \u0111\u01b0\u1ee3c s\u1ef1 \u1ed5n \u0111\u1ecbnh v\u1ec1 m\u1eb7t c\u1ea5u tr\u00fac trong m\u00f4i tr\u01b0\u1eddng c\u00f3 s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 l\u1edbn.<\/li><\/ul><p><strong>\u0110i\u1ec7n tr\u1edf su\u1ea5t<\/strong><\/p><ul class=\"wp-block-list\"><li>\u0110i\u1ec7n tr\u1edf su\u1ea5t ph\u1ea3n \u00e1nh kh\u1ea3 n\u0103ng d\u1eabn \u0111i\u1ec7n c\u1ee7a v\u1eadt li\u1ec7u. Th\u00e9p kh\u00f4ng g\u1ec9 lo\u1ea1i 300 c\u00f3 \u0111i\u1ec7n tr\u1edf su\u1ea5t cao (0,7-0,8 \u00b5\u03a9\u00b7m), th\u00edch h\u1ee3p \u0111\u1ec3 s\u1eed d\u1ee5ng l\u00e0m ch\u1ea5t c\u00e1ch \u0111i\u1ec7n.<\/li><\/ul><p><strong>T\u1eeb t\u00ednh<\/strong><\/p><ul class=\"wp-block-list\"><li>Th\u00e9p kh\u00f4ng g\u1ec9 series 300 th\u01b0\u1eddng kh\u00f4ng c\u00f3 t\u1eeb t\u00ednh, nh\u01b0ng c\u00f3 th\u1ec3 c\u00f3 t\u1eeb t\u00ednh nh\u1eb9 sau khi gia c\u00f4ng ngu\u1ed9i, ch\u1eb3ng h\u1ea1n nh\u01b0 th\u00e9p kh\u00f4ng g\u1ec9 304 c\u00f3 th\u1ec3 c\u00f3 t\u1eeb t\u00ednh nh\u1eb9 sau khi c\u00e1n ngu\u1ed9i. T\u00ednh ch\u1ea5t n\u00e0y khi\u1ebfn th\u00e9p kh\u00f4ng g\u1ec9 series 300 tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn l\u00fd t\u01b0\u1edfng cho c\u00e1c \u1ee9ng d\u1ee5ng kh\u00f4ng c\u00f3 t\u1eeb t\u00ednh nh\u01b0 d\u1ee5ng c\u1ee5 ch\u00ednh x\u00e1c v\u00e0 thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed.<\/li><\/ul><h3 class=\"wp-block-heading\">T\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc<\/h3><p><strong>Ch\u1ed1ng \u0103n m\u00f2n<\/strong><\/p><ul class=\"wp-block-list\"><li>Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 d\u00f2ng 300 l\u00e0 m\u1ed9t trong nh\u1eefng \u0111\u1eb7c t\u00ednh \u0111\u00e1ng ch\u00fa \u00fd nh\u1ea5t c\u1ee7a n\u00f3. V\u1edbi h\u00e0m l\u01b0\u1ee3ng crom v\u00e0 niken cao, c\u00e1c lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 n\u00e0y c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng l\u1ea1i nhi\u1ec1u lo\u1ea1i m\u00f4i tr\u01b0\u1eddng h\u00f3a h\u1ecdc.<\/li><\/ul><p><strong>Kh\u1ea3 n\u0103ng ch\u1ed1ng oxy h\u00f3a<\/strong><\/p><ul class=\"wp-block-list\"><li>Th\u00e9p kh\u00f4ng g\u1ec9 series 300 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng oxy h\u00f3a tuy\u1ec7t v\u1eddi \u1edf nhi\u1ec7t \u0111\u1ed9 cao. L\u1edbp m\u00e0ng oxit do crom t\u1ea1o th\u00e0nh c\u00f3 th\u1ec3 b\u1ea3o v\u1ec7 th\u00e9p kh\u1ecfi qu\u00e1 tr\u00ecnh oxy h\u00f3a.<\/li><\/ul><p><strong>Kh\u00e1ng h\u00f3a ch\u1ea5t<\/strong><\/p><ul class=\"wp-block-list\"><li>Th\u00e9p kh\u00f4ng g\u1ec9 series 300 cho th\u1ea5y kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu kh\u00e1c nhau trong nhi\u1ec1u m\u00f4i tr\u01b0\u1eddng h\u00f3a h\u1ecdc kh\u00e1c nhau. V\u00ed d\u1ee5, th\u00e9p kh\u00f4ng g\u1ec9 304 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu t\u1ed1t v\u1edbi axit y\u1ebfu (nh\u01b0 axit axetic) v\u00e0 m\u1ed9t s\u1ed1 axit h\u1eefu c\u01a1, trong khi th\u00e9p kh\u00f4ng g\u1ec9 316 c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c axit m\u1ea1nh v\u00e0 clorua t\u1ed1t h\u01a1n.<\/li><\/ul><p><strong>Kh\u1ea3 n\u0103ng ch\u1ed1ng Amoniac v\u00e0 N\u01b0\u1edbc Amoniac<\/strong><\/p><ul class=\"wp-block-list\"><li>Th\u00e9p kh\u00f4ng g\u1ec9 series 300 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng amoniac v\u00e0 n\u01b0\u1edbc amoniac t\u1ed1t. Do vai tr\u00f2 c\u1ee7a niken v\u00e0 crom, c\u00e1c lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 n\u00e0y c\u00f3 th\u1ec3 duy tr\u00ec t\u00ednh \u1ed5n \u0111\u1ecbnh h\u00f3a h\u1ecdc t\u1ed1t trong m\u00f4i tr\u01b0\u1eddng amoniac ho\u1eb7c amoniac \u0111\u1ec3 tr\u00e1nh b\u1ecb \u0103n m\u00f2n ho\u1eb7c h\u01b0 h\u1ecfng.<\/li><\/ul><h2 class=\"wp-block-heading\">\u1ee8ng d\u1ee5ng c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 d\u00f2ng 300<\/h2><p><strong>L\u0129nh v\u1ef1c thi\u1ebft b\u1ecb y t\u1ebf:<\/strong> Th\u00e9p kh\u00f4ng g\u1ec9 304 v\u00e0 316 l\u00fd t\u01b0\u1edfng cho d\u1ee5ng c\u1ee5 ph\u1eabu thu\u1eadt, thi\u1ebft b\u1ecb y t\u1ebf v\u00e0 c\u1ea5y gh\u00e9p do kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u00e0 t\u01b0\u01a1ng th\u00edch sinh h\u1ecdc tuy\u1ec7t v\u1eddi. Ch\u00fang c\u00f3 th\u1ec3 ch\u1ed1ng l\u1ea1i s\u1ef1 x\u00f3i m\u00f2n c\u1ee7a d\u1ecbch c\u01a1 th\u1ec3 v\u00e0 ch\u1ea5t kh\u1eed tr\u00f9ng, \u0111\u1ea3m b\u1ea3o s\u1ef1 \u1ed5n \u0111\u1ecbnh v\u00e0 an to\u00e0n l\u00e2u d\u00e0i c\u1ee7a thi\u1ebft b\u1ecb y t\u1ebf.<\/p><p><strong>Ng\u00e0nh th\u1ef1c ph\u1ea9m v\u00e0 \u0111\u1ed3 u\u1ed1ng: <\/strong>Th\u00e9p kh\u00f4ng g\u1ec9 304 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong \u0111\u1ed3 d\u00f9ng nh\u00e0 b\u1ebfp, m\u00e1y ch\u1ebf bi\u1ebfn th\u1ef1c ph\u1ea9m v\u00e0 h\u1ed9p \u0111\u1ef1ng \u0111\u1ed3 u\u1ed1ng do kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u00e0 d\u1ec5 v\u1ec7 sinh.<\/p><p><strong>L\u0129nh v\u1ef1c x\u00e2y d\u1ef1ng v\u00e0 trang tr\u00ed:<\/strong> Th\u00e9p kh\u00f4ng g\u1ec9 series 300 c\u0169ng c\u00f3 hi\u1ec7u su\u1ea5t t\u1ed1t trong x\u00e2y d\u1ef1ng v\u00e0 trang tr\u00ed, th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ea1o ra ngo\u1ea1i th\u1ea5t t\u00f2a nh\u00e0, khung c\u1eeda s\u1ed5 v\u00e0 c\u1eeda ra v\u00e0o v\u00e0 lan can. V\u1ebb ngo\u00e0i \u0111\u1eb9p m\u1eaft v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n tuy\u1ec7t v\u1eddi c\u1ee7a n\u00f3 mang l\u1ea1i n\u00e9t quy\u1ebfn r\u0169 \u0111\u1ed9c \u0111\u00e1o v\u00e0 gi\u00e1 tr\u1ecb l\u00e2u d\u00e0i cho thi\u1ebft k\u1ebf ki\u1ebfn tr\u00fac.<\/p><p><strong>Ng\u00e0nh c\u00f4ng nghi\u1ec7p h\u00f3a ch\u1ea5t v\u00e0 d\u1ea7u m\u1ecf: <\/strong>Trong thi\u1ebft b\u1ecb ch\u1ebf bi\u1ebfn h\u00f3a ch\u1ea5t v\u00e0 s\u1ea3n xu\u1ea5t d\u1ea7u m\u1ecf, th\u00e9p kh\u00f4ng g\u1ec9 316 n\u1ed5i b\u1eadt v\u1edbi kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n tuy\u1ec7t v\u1eddi. N\u00f3 c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c m\u00f4i tr\u01b0\u1eddng h\u00f3a ch\u1ea5t kh\u1eafc nghi\u1ec7t v\u00e0 \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh c\u1ee7a thi\u1ebft b\u1ecb trong \u0111i\u1ec1u ki\u1ec7n l\u00e0m vi\u1ec7c ph\u1ee9c t\u1ea1p.<\/p><p><strong>Ng\u00e0nh c\u00f4ng nghi\u1ec7p \u00f4 t\u00f4:<\/strong> Th\u00e9p kh\u00f4ng g\u1ec9 d\u00f2ng 300 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u nghi\u00eam ng\u1eb7t v\u1ec1 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 ch\u1ed1ng \u0103n m\u00f2n, th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c b\u1ed9 ph\u1eadn quan tr\u1ecdng nh\u01b0 h\u1ec7 th\u1ed1ng \u1ed1ng x\u1ea3 \u00f4 t\u00f4 v\u00e0 k\u1ebft c\u1ea5u th\u00e2n xe.<\/p><h2 class=\"wp-block-heading\">\u01afu \u0111i\u1ec3m v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 d\u00f2ng 300<\/h2><h3 class=\"wp-block-heading\">Thu\u1eadn l\u1ee3i<\/h3><ul class=\"wp-block-list\"><li>Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n tuy\u1ec7t v\u1eddi: V\u1edbi t\u1ef7 l\u1ec7 niken v\u00e0 crom cao, th\u00e9p kh\u00f4ng g\u1ec9 d\u00f2ng 300 t\u1ea1o th\u00e0nh l\u1edbp b\u1ea3o v\u1ec7 oxit crom c\u1ee9ng, c\u00f3 hi\u1ec7u qu\u1ea3 ch\u1ed1ng l\u1ea1i nhi\u1ec1u lo\u1ea1i \u0103n m\u00f2n axit, ki\u1ec1m v\u00e0 mu\u1ed1i. \u0110\u1eb7c bi\u1ec7t, d\u00f2ng 316 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng r\u1ed7 m\u1ea1nh h\u01a1n trong m\u00f4i tr\u01b0\u1eddng c\u00f3 ch\u1ee9a clo do b\u1ed5 sung molypden.<\/li><\/ul><ul class=\"wp-block-list\"><li>Gia c\u00f4ng linh ho\u1ea1t v\u00e0 \u0111a d\u1ea1ng: D\u00f2ng th\u00e9p kh\u00f4ng g\u1ec9 n\u00e0y th\u1ec3 hi\u1ec7n t\u00ednh d\u1ebbo v\u00e0 hi\u1ec7u su\u1ea5t h\u00e0n tuy\u1ec7t v\u1eddi, d\u1ec5 d\u00e0ng x\u1eed l\u00fd c\u00e1c quy tr\u00ecnh ph\u1ee9c t\u1ea1p nh\u01b0 d\u1eadp, u\u1ed1n v\u00e0 h\u00e0n, \u0111\u1ed3ng th\u1eddi mang \u0111\u1ebfn s\u1ef1 ti\u1ec7n l\u1ee3i cho vi\u1ec7c s\u1ea3n xu\u1ea5t c\u00e1c c\u1ea5u tr\u00fac s\u1ea3n ph\u1ea9m \u0111a d\u1ea1ng v\u00e0 tinh t\u1ebf.<\/li><\/ul><ul class=\"wp-block-list\"><li>T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc \u1ed5n \u0111\u1ecbnh: Ngay c\u1ea3 trong \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 cao, th\u00e9p kh\u00f4ng g\u1ec9 d\u00f2ng 300 v\u1eabn c\u00f3 th\u1ec3 duy tr\u00ec \u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 c\u1ee9ng cao \u0111\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u nghi\u00eam ng\u1eb7t c\u1ee7a m\u00f4i tr\u01b0\u1eddng l\u00e0m vi\u1ec7c c\u01b0\u1eddng \u0111\u1ed9 cao.<\/li><\/ul><ul class=\"wp-block-list\"><li>\u0110\u1eb9p v\u00e0 b\u1ec1n: \u0110\u1ed9 b\u00f3ng kim lo\u1ea1i \u0111\u1ed9c \u0111\u00e1o v\u00e0 t\u00ednh ch\u1ea5t trang tr\u00ed t\u1ed1t l\u00e0m cho n\u00f3 tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn l\u00fd t\u01b0\u1edfng cho c\u00e1c s\u1ea3n ph\u1ea9m theo \u0111u\u1ed5i v\u1ebb ngo\u00e0i ch\u1ea5t l\u01b0\u1ee3ng cao. \u0110\u1ed3ng th\u1eddi, kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n tuy\u1ec7t v\u1eddi c\u1ee7a n\u00f3 \u0111\u1ea3m b\u1ea3o tu\u1ed5i th\u1ecd l\u00e2u d\u00e0i c\u1ee7a s\u1ea3n ph\u1ea9m.<\/li><\/ul><h3 class=\"wp-block-heading\">Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/h3><ul class=\"wp-block-list\"><li>Chi ph\u00ed cao h\u01a1n: Do t\u1ef7 l\u1ec7 crom v\u00e0 niken cao c\u00f3 trong th\u00e9p kh\u00f4ng g\u1ec9 series 300 n\u00ean chi ph\u00ed t\u01b0\u01a1ng \u0111\u1ed1i cao. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1c d\u1ef1 \u00e1n ho\u1eb7c \u1ee9ng d\u1ee5ng c\u00f3 ng\u00e2n s\u00e1ch h\u1ea1n ch\u1ebf.<\/li><\/ul><ul class=\"wp-block-list\"><li>Hi\u1ec7u su\u1ea5t nhi\u1ec7t \u0111\u1ed9 th\u1ea5p k\u00e9m: \u1ede nhi\u1ec7t \u0111\u1ed9 r\u1ea5t th\u1ea5p, m\u1ed9t s\u1ed1 lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 series 300 c\u00f3 th\u1ec3 tr\u1edf n\u00ean gi\u00f2n. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 khi\u1ebfn ch\u00fang kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng t\u1ed1t nh\u01b0 m\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u kh\u00e1c trong m\u00f4i tr\u01b0\u1eddng c\u1ef1c l\u1ea1nh.<\/li><\/ul><ul class=\"wp-block-list\"><li>\u0102n m\u00f2n li\u00ean h\u1ea1t c\u00f3 th\u1ec3 x\u1ea3y ra \u1edf nhi\u1ec7t \u0111\u1ed9 cao: \u1ede nhi\u1ec7t \u0111\u1ed9 cao ho\u1eb7c trong \u0111i\u1ec1u ki\u1ec7n h\u00e0n, cacbon (C) trong th\u00e9p kh\u00f4ng g\u1ec9 series 300 c\u00f3 th\u1ec3 t\u1ea1o th\u00e0nh h\u1ee3p ch\u1ea5t crom cacbua v\u1edbi crom (Cr), d\u1eabn \u0111\u1ebfn h\u00e0m l\u01b0\u1ee3ng crom gi\u1ea3m \u1edf ranh gi\u1edbi h\u1ea1t, t\u1ea1o th\u00e0nh c\u00e1i g\u1ecdi l\u00e0 &quot;v\u00f9ng ngh\u00e8o crom&quot;, do \u0111\u00f3 m\u1ea5t kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u00e0 g\u00e2y ra \u0103n m\u00f2n li\u00ean h\u1ea1t. Tuy nhi\u00ean, \u0111i\u1ec1u n\u00e0y th\u01b0\u1eddng c\u00f3 th\u1ec3 tr\u00e1nh \u0111\u01b0\u1ee3c b\u1eb1ng c\u00e1ch ki\u1ec3m so\u00e1t h\u00e0m l\u01b0\u1ee3ng cacbon v\u00e0 s\u1eed d\u1ee5ng c\u00e1c quy tr\u00ecnh x\u1eed l\u00fd nhi\u1ec7t th\u00edch h\u1ee3p.<\/li><\/ul><h2 class=\"wp-block-heading\">L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 b\u1ea3o d\u01b0\u1ee1ng th\u00e9p kh\u00f4ng g\u1ec9 d\u00f2ng 300?<\/h2><p>\u0110\u1ec3 duy tr\u00ec hi\u1ec7u su\u1ea5t c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 d\u00f2ng 300, c\u1ea7n th\u1ef1c hi\u1ec7n c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o tr\u00ec sau \u0111\u00e2y.<\/p><p><strong>V\u1ec7 sinh th\u01b0\u1eddng xuy\u00ean:<\/strong> S\u1eed d\u1ee5ng ch\u1ea5t t\u1ea9y r\u1eeda trung t\u00ednh v\u00e0 n\u01b0\u1edbc \u0111\u1ec3 v\u1ec7 sinh b\u1ec1 m\u1eb7t th\u00e9p kh\u00f4ng g\u1ec9 th\u01b0\u1eddng xuy\u00ean. Kh\u00f4ng s\u1eed d\u1ee5ng ch\u1ea5t t\u1ea9y r\u1eeda c\u00f3 t\u00ednh axit ho\u1eb7c ki\u1ec1m m\u1ea1nh v\u00ec ch\u00fang c\u00f3 th\u1ec3 \u0103n m\u00f2n th\u00e9p kh\u00f4ng g\u1ec9.<\/p><p><strong>Ng\u0103n ng\u1eeba \u0103n m\u00f2n (Ti\u1ebfp theo):<\/strong> Ki\u1ec3m tra th\u01b0\u1eddng xuy\u00ean c\u00e1c thi\u1ebft b\u1ecb v\u00e0 k\u1ebft c\u1ea5u, v\u00e0 x\u1eed l\u00fd k\u1ecbp th\u1eddi c\u00e1c \u0111i\u1ec3m c\u00f3 th\u1ec3 b\u1ecb \u0103n m\u00f2n. \u0110\u1ed1i v\u1edbi th\u00e9p kh\u00f4ng g\u1ec9 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u00f4i tr\u01b0\u1eddng h\u00f3a ch\u1ea5t, h\u00e3y \u00e1p d\u1ee5ng c\u00e1c l\u1edbp b\u1ea3o v\u1ec7 ho\u1eb7c l\u1edbp ph\u1ee7 th\u00edch h\u1ee3p \u0111\u1ec3 t\u0103ng kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n.<\/p><p><strong>Lo\u1ea1i b\u1ecf b\u1ee5i b\u1ea9n v\u00e0 r\u1ec9 s\u00e9t:<\/strong> Khi b\u1ec1 m\u1eb7t th\u00e9p kh\u00f4ng g\u1ec9 xu\u1ea5t hi\u1ec7n b\u1ee5i b\u1ea9n ho\u1eb7c r\u1ec9 s\u00e9t, c\u00f3 th\u1ec3 v\u1ec7 sinh b\u1eb1ng ch\u1ea5t t\u1ea9y r\u1eeda kh\u00f4ng ch\u1ee9a clorua. D\u00f9ng v\u1ea3i m\u1ec1m ho\u1eb7c mi\u1ebfng b\u1ecdt bi\u1ec3n lau nh\u1eb9 nh\u00e0ng, tr\u00e1nh d\u00f9ng b\u00e0n ch\u1ea3i s\u1eaft ho\u1eb7c gi\u1ea5y nh\u00e1m v\u00ec c\u00f3 th\u1ec3 l\u00e0m x\u01b0\u1edbc b\u1ec1 m\u1eb7t v\u00e0 g\u00e2y ra t\u00ecnh tr\u1ea1ng \u0103n m\u00f2n nghi\u00eam tr\u1ecdng h\u01a1n.<\/p><p><strong>Ng\u0103n ng\u1eeba tr\u1ea7y x\u01b0\u1edbc v\u00e0 m\u00e0i m\u00f2n:<\/strong> Tr\u00e1nh l\u00e0m x\u01b0\u1edbc b\u1ec1 m\u1eb7t th\u00e9p kh\u00f4ng g\u1ec9 b\u1eb1ng v\u1eadt c\u1ee9ng. \u0110\u1ed1i v\u1edbi nh\u1eefng khu v\u1ef1c c\u1ea7n ma s\u00e1t th\u01b0\u1eddng xuy\u00ean, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng mi\u1ebfng \u0111\u1ec7m b\u1ea3o v\u1ec7 ho\u1eb7c c\u00e2n nh\u1eafc c\u00e1c c\u00e1ch gi\u1ea3m ma s\u00e1t trong thi\u1ebft k\u1ebf.<\/p><p><strong>Ki\u1ec3m tra th\u01b0\u1eddng xuy\u00ean:<\/strong> \u0110\u1ed1i v\u1edbi c\u00e1c b\u1ed9 ph\u1eadn k\u1ebft c\u1ea5u ho\u1eb7c thi\u1ebft b\u1ecb quan tr\u1ecdng, c\u1ea7n ti\u1ebfn h\u00e0nh ki\u1ec3m tra v\u00e0 b\u1ea3o tr\u00ec chuy\u00ean nghi\u1ec7p th\u01b0\u1eddng xuy\u00ean \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n v\u00e0 ch\u1ee9c n\u0103ng c\u1ee7a c\u00e1c b\u1ed9 ph\u1eadn b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9.<\/p><h2 class=\"wp-block-heading\">S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa d\u00f2ng 300, d\u00f2ng 400 v\u00e0 d\u00f2ng 200 l\u00e0 g\u00ec?<\/h2><p>Th\u00e9p kh\u00f4ng g\u1ec9 d\u00f2ng 300, d\u00f2ng 400 v\u00e0 d\u00f2ng 200 \u0111\u1ec1u c\u00f3 nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m v\u00e0 \u1ee9ng d\u1ee5ng kh\u00e1c nhau, hi\u1ec3u \u0111\u01b0\u1ee3c s\u1ef1 kh\u00e1c bi\u1ec7t c\u1ee7a ch\u00fang s\u1ebd gi\u00fap b\u1ea1n ch\u1ecdn \u0111\u01b0\u1ee3c v\u1eadt li\u1ec7u ph\u00f9 h\u1ee3p nh\u1ea5t.<\/p><h3 class=\"wp-block-heading\">Th\u00e9p kh\u00f4ng g\u1ec9 d\u00f2ng 300<\/h3><p>C\u00e1c t\u00ednh n\u0103ng ch\u00ednh: kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n cao, \u0111\u1ed9 b\u1ec1n cao, x\u1eed l\u00fd t\u1ed1t. Th\u00e9p kh\u00f4ng g\u1ec9 lo\u1ea1i 300 bao g\u1ed3m c\u00e1c lo\u1ea1i 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\/\">316<\/a>\u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong y t\u1ebf, th\u1ef1c ph\u1ea9m, x\u00e2y d\u1ef1ng v\u00e0 c\u00e1c l\u0129nh v\u1ef1c kh\u00e1c.<\/p><p>Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc: Ch\u1ee7 y\u1ebfu ch\u1ee9a h\u00e0m l\u01b0\u1ee3ng crom v\u00e0 niken cao, h\u00e0m l\u01b0\u1ee3ng niken l\u00e0m t\u0103ng kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u00e0 ch\u1ecbu nhi\u1ec7t \u0111\u1ed9 cao.<\/p><p>T\u00ecnh hu\u1ed1ng \u1ee9ng d\u1ee5ng: Ph\u00f9 h\u1ee3p cho nh\u1eefng \u1ee9ng d\u1ee5ng c\u00f3 y\u00eau c\u1ea7u cao v\u1ec1 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u00e0 \u0111\u1ed9 b\u1ec1n cao, ch\u1eb3ng h\u1ea1n nh\u01b0 thi\u1ebft b\u1ecb ch\u1ebf bi\u1ebfn th\u1ef1c ph\u1ea9m, thi\u1ebft b\u1ecb y t\u1ebf, trang tr\u00ed ki\u1ebfn tr\u00fac, v.v.<\/p><h3 class=\"wp-block-heading\">Th\u00e9p kh\u00f4ng g\u1ec9 d\u00f2ng 400<\/h3><p>\u0110\u1eb7c \u0111i\u1ec3m ch\u00ednh: Th\u00e9p kh\u00f4ng g\u1ec9 d\u00f2ng 400 ch\u1ee9a \u00edt niken h\u01a1n v\u00e0 th\u01b0\u1eddng c\u1ee9ng v\u00e0 b\u1ec1n h\u01a1n d\u00f2ng 300, nh\u01b0ng kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n k\u00e9m h\u01a1n.<\/p><p>Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc: Th\u00e0nh ph\u1ea7n ch\u00ednh l\u00e0 crom, h\u00e0m l\u01b0\u1ee3ng niken th\u1ea5p, th\u01b0\u1eddng n\u1eb1m trong kho\u1ea3ng crom 12% v\u00e0 niken 0-1%. 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>, <a href=\"https:\/\/steelprogroup.com\/vi\/stainless-steel\/grades\/grade-430\/\">430<\/a>, v\u00e2n v\u00e2n.<\/p><p>C\u00e1c t\u00ecnh hu\u1ed1ng \u1ee9ng d\u1ee5ng: Ph\u00f9 h\u1ee3p cho nh\u1eefng \u1ee9ng d\u1ee5ng c\u00f3 y\u00eau c\u1ea7u cao v\u1ec1 \u0111\u1ed9 c\u1ee9ng v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n, ch\u1eb3ng h\u1ea1n nh\u01b0 dao, h\u1ec7 th\u1ed1ng \u1ed1ng x\u1ea3 \u00f4 t\u00f4, \u0111\u1ed3 gia d\u1ee5ng, v.v. Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n c\u1ee7a lo\u1ea1i th\u00e9p n\u00e0y kh\u00f4ng t\u1ed1t b\u1eb1ng lo\u1ea1i th\u00e9p d\u00f2ng 300 v\u00e0 ph\u00f9 h\u1ee3p v\u1edbi \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng \u00f4n h\u00f2a h\u01a1n.<\/p><h3 class=\"wp-block-heading\">Th\u00e9p kh\u00f4ng g\u1ec9 d\u00f2ng 200<\/h3><p>\u0110\u1eb7c \u0111i\u1ec3m ch\u00ednh: Th\u00e9p kh\u00f4ng g\u1ec9 lo\u1ea1i 200 th\u01b0\u1eddng ch\u1ee9a nhi\u1ec1u mangan v\u00e0 nit\u01a1 h\u01a1n, h\u00e0m l\u01b0\u1ee3ng niken th\u1ea5p h\u01a1n. M\u1eb7c d\u00f9 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n k\u00e9m h\u01a1n lo\u1ea1i 300, nh\u01b0ng \u0111\u1ed9 b\u1ec1n cao h\u01a1n v\u00e0 chi ph\u00ed th\u1ea5p h\u01a1n.<\/p><p>Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc: Ch\u1ee7 y\u1ebfu ch\u1ee9a crom, mangan v\u00e0 nit\u01a1, h\u00e0m l\u01b0\u1ee3ng niken t\u01b0\u01a1ng \u0111\u1ed1i th\u1ea5p. C\u00e1c lo\u1ea1i ph\u1ed5 bi\u1ebfn bao g\u1ed3m <a href=\"https:\/\/steelprogroup.com\/vi\/stainless-steel\/grades\/grade-201\/\">201<\/a>, <a href=\"https:\/\/steelprogroup.com\/vi\/stainless-steel\/grades\/grade-202\/\">202<\/a>, v\u00e2n v\u00e2n.<\/p><p>C\u00e1c t\u00ecnh hu\u1ed1ng \u1ee9ng d\u1ee5ng: Ph\u00f9 h\u1ee3p cho nh\u1eefng tr\u01b0\u1eddng h\u1ee3p nh\u1ea1y c\u1ea3m v\u1ec1 chi ph\u00ed m\u00e0 kh\u00f4ng y\u00eau c\u1ea7u kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n c\u1ef1c cao, ch\u1eb3ng h\u1ea1n nh\u01b0 v\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng, \u0111\u1ed3 gia d\u1ee5ng, v.v. D\u00f2ng 200 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c \u1ee9ng d\u1ee5ng c\u00f3 chi ph\u00ed th\u1ea5p nh\u01b0ng v\u1eabn y\u00eau c\u1ea7u kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n nh\u1ea5t \u0111\u1ecbnh.<\/p><h2 class=\"wp-block-heading\">D\u00f2ng 300 so v\u1edbi Duplex<\/h2><h3 class=\"wp-block-heading\">Th\u00e9p kh\u00f4ng g\u1ec9 d\u00f2ng 300<\/h3><p>\u0110\u1eb7c \u0111i\u1ec3m: Th\u00e9p kh\u00f4ng g\u1ec9 Austenitic; kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t, d\u1ec5 gia c\u00f4ng v\u00e0 \u0111\u1ed9 b\u1ec1n cao; c\u00e1c lo\u1ea1i ph\u1ed5 bi\u1ebfn l\u00e0 304 v\u00e0 316.<\/p><p>\u1ee8ng d\u1ee5ng: Do c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n tuy\u1ec7t v\u1eddi n\u00ean \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u m\u00f4i tr\u01b0\u1eddng kh\u00e1c nhau.<\/p><h3 class=\"wp-block-heading\">Th\u00e9p kh\u00f4ng g\u1ec9 Duplex<\/h3><p>\u0110\u1eb7c \u0111i\u1ec3m: V\u1edbi \u0111\u1ed9 b\u1ec1n cao v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t, th\u00e9p kh\u00f4ng g\u1ec9 duplex k\u1ebft h\u1ee3p c\u1ea5u tr\u00fac c\u1ee7a austenite v\u00e0 ferrite, nh\u01b0 2205 v\u00e0 2507.<\/p><p>\u01afu \u0111i\u1ec3m: So v\u1edbi d\u00f2ng 300, th\u00e9p kh\u00f4ng g\u1ec9 Duplex c\u00f3 \u0111\u1ed9 b\u1ec1n cao h\u01a1n v\u00e0 c\u0169ng c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong m\u00f4i tr\u01b0\u1eddng clorua.&nbsp;<\/p><p>\u1ee8ng d\u1ee5ng: \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c l\u0129nh v\u1ef1c c\u00f3 y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n cao nh\u01b0 h\u00f3a d\u1ea7u, k\u1ef9 thu\u1eadt h\u00e0ng h\u1ea3i v\u00e0 s\u1ea3n xu\u1ea5t ph\u00e2n b\u00f3n.<\/p><h2 class=\"wp-block-heading\">L\u1edbp 304 so v\u1edbi L\u1edbp 316<\/h2><h3 class=\"wp-block-heading\">Th\u00e9p kh\u00f4ng g\u1ec9 304<\/h3><p>T\u00ednh n\u0103ng: Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n, kh\u1ea3 n\u0103ng gia c\u00f4ng v\u00e0 kh\u1ea3 n\u0103ng \u0111\u1ecbnh h\u00ecnh tuy\u1ec7t v\u1eddi. \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong thi\u1ebft b\u1ecb gia d\u1ee5ng v\u00e0 trang tr\u00ed ki\u1ebfn tr\u00fac.<\/p><p>\u1ee8ng d\u1ee5ng: Th\u00edch h\u1ee3p cho c\u00e1c thi\u1ebft b\u1ecb ch\u1ebf bi\u1ebfn th\u1ef1c ph\u1ea9m, thi\u1ebft b\u1ecb y t\u1ebf, \u0111\u1ed3 d\u00f9ng nh\u00e0 b\u1ebfp, v.v. C\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n cao nh\u01b0ng kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng t\u1ed1t b\u1eb1ng th\u00e9p 316 trong m\u00f4i tr\u01b0\u1eddng clorua.<\/p><h3 class=\"wp-block-heading\">Th\u00e9p kh\u00f4ng g\u1ec9 316<\/h3><p>T\u00ednh n\u0103ng: 2-3% molypden \u0111\u01b0\u1ee3c th\u00eam v\u00e0o 304, gi\u00fap ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t h\u01a1n trong m\u00f4i tr\u01b0\u1eddng clorua.<\/p><p>\u1ee8ng d\u1ee5ng: Th\u00edch h\u1ee3p cho m\u00f4i tr\u01b0\u1eddng bi\u1ec3n, thi\u1ebft b\u1ecb x\u1eed l\u00fd h\u00f3a ch\u1ea5t, c\u00f4ng nghi\u1ec7p d\u01b0\u1ee3c ph\u1ea9m v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c c\u00f3 y\u00eau c\u1ea7u ch\u1ed1ng \u0103n m\u00f2n c\u1ef1c cao. Th\u00e9p kh\u00f4ng g\u1ec9 316 th\u01b0\u1eddng \u0111\u1eaft h\u01a1n th\u00e9p kh\u00f4ng g\u1ec9 304.<\/p><p>Nh\u1ea5p \u0111\u1ec3 \u0111\u1ecdc th\u00eam v\u1ec1 <a href=\"https:\/\/steelprogroup.com\/vi\/stainless-steel\/grades\/comparisons\/304-vs-316\/\">304 so v\u1edbi 316<\/a>.<\/p><h2 class=\"wp-block-heading\">C\u00e1c lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 ph\u1ed5 bi\u1ebfn c\u1ee7a d\u00f2ng 300<\/h2><figure class=\"wp-block-table\"><table><tbody><tr><td>C\u1ea5p<\/td><td>\u0110\u1ed9 b\u1ec1n k\u00e9o<\/td><td>Nhi\u1ec7t \u0111\u1ed9 s\u1eed d\u1ee5ng t\u1ed1i \u0111a<\/td><td>\u0110i\u1ec3m n\u00f3ng ch\u1ea3y<\/td><td>\u0110\u1ed9 d\u1ebbo (%)<\/td><td>\u0110\u1ed9 c\u1ee9ng (HB)<\/td><td>S\u1eed d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/td><td>T\u1eeb t\u00ednh<\/td><td>Ch\u1ed1ng \u0103n m\u00f2n<\/td><\/tr><tr><td><a href=\"https:\/\/steelprogroup.com\/vi\/stainless-steel\/grades\/grade-301\/\">301<\/a><\/td><td>515 MPa (75 Ksi)<\/td><td>871 \u00b0C (1600 \u00b0F)<\/td><td>1399-1421\u00b0C (2550-2590\u00b0F)<\/td><td>40%<\/td><td>201<\/td><td>Trang tr\u00ed \u00f4 t\u00f4, thi\u1ebft b\u1ecb nh\u00e0 b\u1ebfp<\/td><td>KH\u00d4NG<\/td><td>Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n tuy\u1ec7t v\u1eddi<\/td><\/tr><tr><td>301H<\/td><td>690 MPa (100 Ksi)<\/td><td>870\u00b0C (1598\u00b0F)<\/td><td>1399-1421\u00b0C (2550-2590\u00b0F)<\/td><td>40%<\/td><td>201<\/td><td>\u1ee8ng d\u1ee5ng c\u01b0\u1eddng \u0111\u1ed9 cao<\/td><td>KH\u00d4NG<\/td><td>Xu\u1ea5t s\u1eafc<\/td><\/tr><tr><td><a href=\"https:\/\/steelprogroup.com\/vi\/stainless-steel\/grades\/grade-302\/\">302<\/a><\/td><td>585 MPa (85 Ksi)<\/td><td>870\u02daC (1598\u02daF)<\/td><td>1400-1420\u00b0C (2550-2590\u00b0F)<\/td><td>40%<\/td><td>201<\/td><td>L\u00f2 xo, v\u00f2ng \u0111\u1ec7m<\/td><td>KH\u00d4NG<\/td><td>Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n tuy\u1ec7t v\u1eddi<\/td><\/tr><tr><td><a href=\"https:\/\/steelprogroup.com\/vi\/stainless-steel\/grades\/grade-303\/\">303<\/a><\/td><td>690 MPa (100 Ksi)<\/td><td>760\u02daC (1.400\u02daF)<\/td><td>1400-1420\u00b0C (2550-2590\u00b0F)<\/td><td>35%<\/td><td>262<\/td><td>Ch\u1ed1t, ph\u1ee5 ki\u1ec7n<\/td><td>KH\u00d4NG<\/td><td>Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n th\u1ea5p h\u01a1n<\/td><\/tr><tr><td><a href=\"https:\/\/steelprogroup.com\/vi\/stainless-steel\/grades\/grade-304\/\">304<\/a><\/td><td>621 MPa (90 Ksi)<\/td><td>870\u02daC (1598\u02daF)<\/td><td>1399-1454\u00b0C (2550-2650\u00b0F)<\/td><td>45%<\/td><td>201<\/td><td>Thi\u1ebft b\u1ecb th\u1ef1c ph\u1ea9m, th\u00f9ng ch\u1ee9a h\u00f3a ch\u1ea5t<\/td><td>KH\u00d4NG<\/td><td>Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n t\u1ed5ng th\u1ec3 t\u1ed1t<\/td><\/tr><tr><td>304L<\/td><td>485 MPa (70 Ksi)<\/td><td>870\u00b0C (1598\u00b0F)<\/td><td>1400-1450\u00b0C (2550-2640\u00b0F)<\/td><td>45%<\/td><td>190<\/td><td>H\u00f3a ch\u1ea5t\/ch\u1ebf bi\u1ebfn th\u1ef1c ph\u1ea9m, b\u1ed3n ch\u1ee9a<\/td><td>KH\u00d4NG<\/td><td>Xu\u1ea5t s\u1eafc<\/td><\/tr><tr><td><a href=\"https:\/\/steelprogroup.com\/vi\/stainless-steel\/grades\/grade-309\/\">309<\/a><\/td><td>620 MPa (89 Ksi)<\/td><td>1000\u02daC (1.832\u02daF)<\/td><td>1400-1455\u00b0C (2550-2651\u00b0F)<\/td><td>25%<\/td><td>180<\/td><td>C\u00e1c b\u1ed9 ph\u1eadn l\u00f2, l\u1edbp l\u00f3t l\u00f2<\/td><td>KH\u00d4NG<\/td><td>Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n tuy\u1ec7t v\u1eddi<\/td><\/tr><tr><td><a href=\"https:\/\/steelprogroup.com\/vi\/stainless-steel\/grades\/grade-316\/\">316<\/a><\/td><td>579 MPa (84 Ksi)<\/td><td>800\u02daC (1.472\u02daF)<\/td><td>1371-1399\u00b0C (2500-2550\u00b0F)<\/td><td>45%<\/td><td>217<\/td><td>\u1ee8ng d\u1ee5ng h\u00e0ng h\u1ea3i, d\u1ee5ng c\u1ee5 ph\u1eabu thu\u1eadt<\/td><td>KH\u00d4NG<\/td><td>Kh\u1ea3 n\u0103ng ch\u1ed1ng clorua tuy\u1ec7t v\u1eddi<\/td><\/tr><tr><td>316L<\/td><td>485 MPa (70 Ksi)<\/td><td>870\u00b0C (1598\u00b0F)<\/td><td>1375-1400\u00b0C (2500-2550\u00b0F)<\/td><td>50%<\/td><td>217<\/td><td>H\u00e0ng h\u1ea3i, thi\u1ebft b\u1ecb y t\u1ebf<\/td><td>KH\u00d4NG<\/td><td>Cao c\u1ea5p (ch\u1ed1ng clorua)<\/td><\/tr><tr><td><a href=\"https:\/\/steelprogroup.com\/vi\/stainless-steel\/grades\/317-317l\/\">317<\/a><\/td><td>585 MPa (85 Ksi)<\/td><td>816\u02daC (1.500\u02daF)<\/td><td>1370-1400\u00b0C (2500-2550\u00b0F)<\/td><td>40%<\/td><td>217<\/td><td>Thi\u1ebft b\u1ecb x\u1eed l\u00fd h\u00f3a ch\u1ea5t<\/td><td>KH\u00d4NG<\/td><td>Kh\u1ea3 n\u0103ng ch\u1ed1ng clorua t\u1ed1t<\/td><\/tr><tr><td>317L<\/td><td>515 MPa (75 Ksi)<\/td><td>870\u00b0C (1598\u00b0F)<\/td><td>1370-1400\u00b0C (2500-2550\u00b0F)<\/td><td>45%<\/td><td>210<\/td><td>X\u1eed l\u00fd h\u00f3a ch\u1ea5t, nh\u00e0 m\u00e1y b\u1ed9t gi\u1ea5y<\/td><td>KH\u00d4NG<\/td><td>Xu\u1ea5t s\u1eafc<\/td><\/tr><tr><td><a href=\"https:\/\/steelprogroup.com\/vi\/stainless-steel\/grades\/grade-321\/\">321<\/a><\/td><td>620 MPa (90 Ksi)<\/td><td>816\u02daC (1.500\u02daF)<\/td><td>1400-1425\u00b0C (2550-2600\u00b0F)<\/td><td>45%<\/td><td>217<\/td><td>Linh ki\u1ec7n h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, h\u1ec7 th\u1ed1ng x\u1ea3<\/td><td>KH\u00d4NG<\/td><td>Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n tuy\u1ec7t v\u1eddi<\/td><\/tr><tr><td>330<\/td><td>550 MPa (80 Ksi)<\/td><td>982\u00b0C (1800\u00b0F)<\/td><td>1398-1424\u00b0C (2550-2595\u00b0F)<\/td><td>35%<\/td><td>192<\/td><td>B\u1ed9 trao \u0111\u1ed5i nhi\u1ec7t, b\u1ed9 ph\u1eadn l\u00f2<\/td><td>KH\u00d4NG<\/td><td>T\u1ed1t<\/td><\/tr><tr><td><a href=\"https:\/\/steelprogroup.com\/vi\/stainless-steel\/grades\/grade-347\/\">347<\/a><\/td><td>690 MPa (101 Ksi)<\/td><td>816\u02daC (1.500\u02daF)<\/td><td>1400-1425\u00b0C (2550-2600\u00b0F)<\/td><td>45%<\/td><td>217<\/td><td>Thi\u1ebft b\u1ecb x\u1eed l\u00fd h\u00f3a ch\u1ea5t<\/td><td>KH\u00d4NG<\/td><td>Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n tuy\u1ec7t v\u1eddi<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">Nh\u1eadn \u0111\u01b0\u1ee3c th\u00e9p kh\u00f4ng g\u1ec9 nh\u01b0 mong mu\u1ed1n!<\/h2><p>Ch\u00fang t\u00f4i cung c\u1ea5p nhi\u1ec1u lo\u1ea1i s\u1ea3n ph\u1ea9m ch\u1ea5t l\u01b0\u1ee3ng cao <a href=\"https:\/\/steelprogroup.com\/vi\/stainless-steel\/\">s\u1ea3n ph\u1ea9m th\u00e9p kh\u00f4ng g\u1ec9<\/a>, bao g\u1ed3m nh\u01b0ng kh\u00f4ng gi\u1edbi h\u1ea1n \u1edf d\u00f2ng 300. B\u1ea1n c\u0169ng c\u00f3 th\u1ec3 t\u00f9y ch\u1ec9nh k\u00edch th\u01b0\u1edbc theo nhu c\u1ea7u c\u1ee7a m\u00ecnh v\u00e0 c\u00e1c k\u1ef9 s\u01b0 xu\u1ea5t s\u1eafc c\u1ee7a ch\u00fang t\u00f4i s\u1ebd thi\u1ebft k\u1ebf m\u1ed9t s\u1ea3n ph\u1ea9m v\u1eeba \u00fd cho b\u1ea1n. N\u1ebfu b\u1ea1n c\u1ea7n mua, vui l\u00f2ng <a href=\"https:\/\/steelprogroup.com\/vi\/contact-us\/\">li\u00ean h\u1ec7 v\u1edbi ch\u00fang t\u00f4i<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>Ch\u00fang t\u00f4i s\u1ebd ph\u00e2n t\u00edch chi ti\u1ebft th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc, t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc v\u00e0 t\u00ednh ch\u1ea5t v\u1eadt l\u00fd c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 d\u00f2ng 300 v\u00e0 so s\u00e1nh [\u2026]<\/p>","protected":false},"author":1,"featured_media":9342,"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":[4191,112],"tags":[],"class_list":["post-9353","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-grades","category-stainless-steel"],"acf":[],"_links":{"self":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/9353","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=9353"}],"version-history":[{"count":0,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/9353\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media\/9342"}],"wp:attachment":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media?parent=9353"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/categories?post=9353"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/tags?post=9353"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}