{"id":21200,"date":"2025-03-03T07:09:00","date_gmt":"2025-03-02T23:09:00","guid":{"rendered":"https:\/\/steelprogroup.com\/?p=21200"},"modified":"2025-03-03T19:17:06","modified_gmt":"2025-03-03T11:17:06","slug":"q235a-vs-q235b","status":"publish","type":"post","link":"https:\/\/steelprogroup.com\/vi\/galvanized-steel\/grades\/comparison\/q235a-vs-q235b\/","title":{"rendered":"S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa th\u00e9p Q235A v\u00e0 Q235B l\u00e0 g\u00ec"},"content":{"rendered":"<p>C\u1ea3 Q235A v\u00e0 Q235B \u0111\u1ec1u \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i l\u00e0 th\u00e9p k\u1ebft c\u1ea5u carbon th\u1ea5p, theo ti\u00eau chu\u1ea9n GB\/T 700 c\u1ee7a Trung Qu\u1ed1c.<\/p><p>Q235A \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn v\u00ec \u0111\u1ed9 b\u1ec1n, kh\u1ea3 n\u0103ng h\u00e0n v\u00e0 kh\u1ea3 n\u0103ng \u0111\u1ecbnh h\u00ecnh t\u1ed1t. N\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c k\u1ebft c\u1ea5u nh\u01b0 khung nh\u00e0, d\u1ea7m v\u00e0 c\u1ea7u. Q235B c\u00f3 h\u00e0m l\u01b0\u1ee3ng l\u01b0u hu\u1ef3nh v\u00e0 ph\u1ed1t pho th\u1ea5p h\u01a1n m\u1ed9t ch\u00fat \u0111\u1ec3 t\u0103ng \u0111\u1ed9 b\u1ec1n. N\u00f3 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t trong c\u00e1c \u1ee9ng d\u1ee5ng nh\u01b0 ph\u1ee5 t\u00f9ng \u00f4 t\u00f4 v\u00e0 k\u1ebft c\u1ea5u ch\u1ecbu l\u1ef1c n\u1eb7ng.<\/p><h2 class=\"wp-block-heading\">Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a th\u00e9p Q235A so v\u1edbi Q235B<\/h2><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>C\u1ea5p<\/strong><\/td><td><strong>C<\/strong><\/td><td><strong>Si<\/strong><\/td><td><strong>Mn<\/strong><\/td><td><strong>P<\/strong><\/td><td><strong>S<\/strong><\/td><td><strong>Cr<\/strong><\/td><td><strong>Ni<\/strong><\/td><td><strong>Cu<\/strong><\/td><td><strong>B\u1eb0NG<\/strong><\/td><td><strong>N<\/strong><\/td><\/tr><tr><td>C\u00e2u h\u1ecfi 235A<\/td><td>\u22640,22<\/td><td rowspan=\"2\">\u22640,35<\/td><td>\u22641,4<\/td><td rowspan=\"2\">\u22640,045<\/td><td>\u22640,05<\/td><td rowspan=\"2\">\u22640,3<\/td><td rowspan=\"2\">\u22640,3<\/td><td rowspan=\"2\">\u22640,3<\/td><td rowspan=\"2\">\u22640,08<\/td><td rowspan=\"2\">\u22640,08<\/td><\/tr><tr><td>C\u00e2u h\u1ecfi 235B<\/td><td>\u22640,2<\/td><td>\u22641,4<\/td><td>\u22640,045<\/td><\/tr><\/tbody><\/table><\/figure><p><strong>C\u00e2u h\u1ecfi 235B<\/strong> c\u00f3 c\u1ea5u h\u00ecnh h\u00f3a h\u1ecdc \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n \u0111\u00f4i ch\u00fat so v\u1edbi Q235A, \u0111\u1eb7c bi\u1ec7t l\u00e0 v\u1edbi m\u1ee9c l\u01b0u hu\u1ef3nh gi\u1ea3m, <strong>t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng h\u00e0n c\u1ee7a n\u00f3<\/strong>. Nh\u01b0ng v\u1edbi l\u01b0\u1ee3ng t\u1ea1p ch\u1ea5t cho ph\u00e9p cao h\u01a1n, <strong>C\u00e2u h\u1ecfi 235A<\/strong> l\u00e0 nhi\u1ec1u h\u01a1n <strong>ti\u1ebft ki\u1ec7m chi ph\u00ed<\/strong> v\u00e0 l\u00fd t\u01b0\u1edfng cho c\u00e1c d\u1ef1 \u00e1n \u01b0u ti\u00ean ng\u00e2n s\u00e1ch h\u01a1n \u0111\u1ed9 b\u1ec1n.&nbsp;<\/p><h2 class=\"wp-block-heading\">Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n c\u1ee7a th\u00e9p Q235A so v\u1edbi th\u00e9p Q235B<\/h2><p>Q235B c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t h\u01a1n m\u1ed9t ch\u00fat so v\u1edbi Q235A, ch\u1ee7 y\u1ebfu l\u00e0 do h\u00e0m l\u01b0\u1ee3ng l\u01b0u hu\u1ef3nh th\u1ea5p h\u01a1n. M\u1eb7c d\u00f9 c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t, c\u1ea3 Q235A v\u00e0 Q235B \u0111\u1ec1u d\u1ec5 b\u1ecb r\u1ec9 s\u00e9t trong m\u00f4i tr\u01b0\u1eddng \u1ea9m \u01b0\u1edbt ho\u1eb7c \u0103n m\u00f2n. V\u00ec l\u00fd do n\u00e0y, ch\u00fang th\u01b0\u1eddng c\u1ea7n \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1ea3o v\u1ec7, ch\u1eb3ng h\u1ea1n nh\u01b0 m\u1ea1 k\u1ebdm ho\u1eb7c s\u01a1n.<\/p><p><em>\u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin chi ti\u1ebft v\u1ec1 s\u1ea3n ph\u1ea9m th\u00e9p m\u1ea1 k\u1ebdm ch\u1ea5t l\u01b0\u1ee3ng cao, h\u00e3y nh\u1ea5p v\u00e0o \u0111\u00e2y.<\/em><\/p><h2 class=\"wp-block-heading\">T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a th\u00e9p Q235A so v\u1edbi th\u00e9p Q235B<\/h2><p>B\u1ea3ng n\u00e0y hi\u1ec3n th\u1ecb c\u00e1c t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a th\u00e9p Q235A v\u00e0 Q235B:<\/p><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>\u0110\u1ed9 d\u00e0y (\u0110\u01b0\u1eddng k\u00ednh) mm<\/strong><\/td><td><strong>\u0110\u1ed9 b\u1ec1n k\u00e9o (MPa)<\/strong><\/td><td><strong>Gi\u1edbi h\u1ea1n ch\u1ea3y (MPa)<\/strong><\/td><td><strong>\u0110\u1ed9 gi\u00e3n d\u00e0i (%)<\/strong><\/td><\/tr><tr><td>\u2264 16<\/td><td>370\u2013500<\/td><td>\u2265 235<\/td><td>\u2265 26<\/td><\/tr><tr><td>16 &lt; t \u2264 40<\/td><td>370\u2013500<\/td><td>\u2265 225<\/td><td>\u2265 26<\/td><\/tr><tr><td>40 &lt; t \u2264 60<\/td><td>370\u2013500<\/td><td>\u2265 215<\/td><td>\u2265 25<\/td><\/tr><tr><td>60 &lt; t \u2264 100<\/td><td>370\u2013500<\/td><td>\u2265 215<\/td><td>\u2265 24<\/td><\/tr><tr><td>100 &lt; t \u2264 150<\/td><td>370\u2013500<\/td><td>\u2265 195<\/td><td>\u2265 22<\/td><\/tr><tr><td>150 &lt; t \u2264 200<\/td><td>370\u2013500<\/td><td>\u2265 185<\/td><td>\u2265 21<\/td><\/tr><\/tbody><\/table><\/figure><ul class=\"wp-block-list\"><li><em>C\u00e1c gi\u00e1 tr\u1ecb n\u00e0y gi\u1ed1ng h\u1ec7t nhau \u0111\u1ed1i v\u1edbi Q235A v\u00e0 Q235B v\u00ec ch\u00fang c\u00f3 c\u00e1c \u0111\u1eb7c t\u00ednh c\u1ea5u tr\u00fac carbon th\u1ea5p t\u01b0\u01a1ng t\u1ef1 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh theo ti\u00eau chu\u1ea9n GB\/T 700 c\u1ee7a Trung Qu\u1ed1c.\u00a0<\/em><\/li><\/ul><h3 class=\"wp-block-heading\">Ki\u1ec3m tra t\u00e1c \u0111\u1ed9ng<\/h3><p>B\u1ea3ng sau \u0111\u00e2y t\u00f3m t\u1eaft c\u00e1c y\u00eau c\u1ea7u ki\u1ec3m tra t\u00e1c \u0111\u1ed9ng cho t\u1eebng lo\u1ea1i:<\/p><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>C\u1ea5p<\/strong><\/td><td><strong>Nhi\u1ec7t \u0111\u1ed9<\/strong><strong>(\u00b0C)<\/strong><\/td><td><strong>N\u0103ng l\u01b0\u1ee3ng va ch\u1ea1m (KV2) (J)<\/strong><\/td><\/tr><tr><td>C\u00e2u h\u1ecfi 235A<\/td><td>Kh\u00f4ng b\u1eaft bu\u1ed9c<\/td><td>Kh\u00f4ng b\u1eaft bu\u1ed9c<\/td><\/tr><tr><td>C\u00e2u h\u1ecfi 235B<\/td><td>20<\/td><td>\u2265 27<\/td><\/tr><tr><td>Q235C<\/td><td>0<\/td><td>\u2265 27<\/td><\/tr><tr><td>Q235D<\/td><td>-20<\/td><td>\u2265 27<\/td><\/tr><\/tbody><\/table><\/figure><ul class=\"wp-block-list\"><li><em>Ki\u1ec3m tra va \u0111\u1eadp \u0111\u00e1nh gi\u00e1 \u0111\u1ed9 b\u1ec1n c\u1ee7a v\u1eadt li\u1ec7u, y\u1ebfu t\u1ed1 r\u1ea5t quan tr\u1ecdng trong m\u00f4i tr\u01b0\u1eddng ch\u1ecbu t\u1ea3i tr\u1ecdng \u0111\u1ed9ng ho\u1eb7c nhi\u1ec7t \u0111\u1ed9 th\u1ea5p.<\/em><\/li><\/ul><p><strong>C\u00e2u h\u1ecfi 235B<\/strong> cung c\u1ea5p m\u1ed9t<strong> kh\u1ea3 n\u0103ng ch\u1ed1ng va \u0111\u1eadp cao h\u01a1n<\/strong> h\u01a1n Q235A, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng, \u0111i\u1ec1u n\u00e0y l\u00e0m cho n\u00f3 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c b\u1ed9 ph\u1eadn k\u1ebft c\u1ea5u ch\u1ecbu t\u1ea3i tr\u1ecdng \u0111\u1ed9ng.<\/p><h2 class=\"wp-block-heading\">\u1ee8ng d\u1ee5ng c\u1ee7a th\u00e9p Q235A so v\u1edbi Q235B<\/h2><h3 class=\"wp-block-heading\">C\u00e2u h\u1ecfi 235A<\/h3><p>N\u00f3 ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho <strong>th\u00e0nh ph\u1ea7n c\u1ea5u tr\u00fac trong nh\u00e0<\/strong> n\u01a1i m\u00e0 s\u1ef1 \u1ed5n \u0111\u1ecbnh l\u00e0 ch\u00eca kh\u00f3a, ch\u1eb3ng h\u1ea1n nh\u01b0 trong vi\u1ec7c x\u00e2y d\u1ef1ng khung, gi\u00e1 \u0111\u1ee1 v\u00e0 thi\u1ebft b\u1ecb kh\u00f4ng ch\u1ecbu t\u1ea3i. <strong>hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed<\/strong> l\u00fd t\u01b0\u1edfng cho c\u00e1c d\u1ef1 \u00e1n kh\u00f4ng y\u00eau c\u1ea7u \u0111\u1ed9 b\u1ec1n cao.<\/p><h3 class=\"wp-block-heading\">C\u00e2u h\u1ecfi 235B<\/h3><p>Do c\u00f3 l\u1ee3i th\u1ebf c\u1ee7a n\u00f3 <strong>s\u1ef1 c\u00e2n b\u1eb1ng gi\u1eefa s\u1ee9c m\u1ea1nh v\u00e0 kh\u1ea3 n\u0103ng t\u1ea1o h\u00ecnh<\/strong>, Q235B th\u01b0\u1eddng \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y trong c\u00e1c \u1ee9ng d\u1ee5ng nh\u01b0 khung x\u00e2y d\u1ef1ng, c\u1ea7u, b\u1ed9 ph\u1eadn c\u01a1 kh\u00ed v\u00e0 th\u1eadm ch\u00ed c\u1ea3 thi\u1ebft b\u1ecb h\u1ea1ng n\u1eb7ng. <strong>kh\u1ea3 n\u0103ng gia c\u00f4ng v\u00e0 d\u1ec5 h\u00e0n<\/strong> cho ph\u00e9p s\u1eed d\u1ee5ng \u0111a d\u1ea1ng trong c\u00e1c l\u0129nh v\u1ef1c x\u00e2y d\u1ef1ng v\u00e0 s\u1ea3n xu\u1ea5t.<\/p><h2 class=\"wp-block-heading\">Gi\u1ea3i ph\u00e1p th\u00e9p Q235 ch\u1ea5t l\u01b0\u1ee3ng cao<\/h2><p><a href=\"https:\/\/steelprogroup.com\/vi\">Nh\u00f3m Th\u00e9p Pro<\/a> cung c\u1ea5p th\u00e9p Q235 ch\u1ea5t l\u01b0\u1ee3ng cao \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ri\u00eang \u0111\u1ec3 \u0111\u00e1p \u1ee9ng m\u1ecdi nhu c\u1ea7u v\u1ec1 k\u1ebft c\u1ea5u v\u00e0 c\u00f4ng nghi\u1ec7p c\u1ee7a b\u1ea1n. B\u1ea1n c\u00f3 th\u1ec3 t\u1eadn h\u01b0\u1edfng m\u1ee9c gi\u00e1 c\u1ea1nh tranh v\u00e0 giao h\u00e0ng nhanh ch\u00f3ng cho m\u1ecdi \u0111\u01a1n h\u00e0ng. \u0110\u1ec3 c\u00f3 b\u00e1o gi\u00e1 nhanh, <a href=\"https:\/\/steelprogroup.com\/vi\/contact-us\/\">nh\u1ea5p v\u00e0o \u0111\u00e2y<\/a>.&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Both Q235A and Q235B are classified as low-carbon structural steels, specified by the Chinese GB\/T 700 standard. Q235A is recognized [&hellip;]<\/p>","protected":false},"author":1,"featured_media":21206,"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":[4309,4273,4307],"tags":[],"class_list":["post-21200","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-comparison-grades-galvanized-steel","category-galvanized-steel","category-grades-galvanized-steel"],"acf":[],"_links":{"self":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/21200","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=21200"}],"version-history":[{"count":0,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/21200\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media\/21206"}],"wp:attachment":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media?parent=21200"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/categories?post=21200"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/tags?post=21200"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}