{"id":3469,"date":"2012-06-01T05:05:00","date_gmt":"2012-06-01T05:05:00","guid":{"rendered":"https:\/\/zhishangsteel.com\/?p=3469"},"modified":"2021-11-19T09:46:14","modified_gmt":"2021-11-19T09:46:14","slug":"our-steel-number-expression-method","status":"publish","type":"post","link":"https:\/\/baowusteelcompany.com\/our-steel-number-expression-method.html","title":{"rendered":"Our Steel Number Expression Method"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"3469\" class=\"elementor elementor-3469\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-31e59e54 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"31e59e54\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-f1ad1cf\" data-id=\"f1ad1cf\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-15b14972 elementor-widget elementor-widget-heading\" data-id=\"15b14972\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Our Steel Number Expression Method<\/h1>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-26650a8b elementor-widget elementor-widget-post-info\" data-id=\"26650a8b\" data-element_type=\"widget\" data-widget_type=\"post-info.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<ul class=\"elementor-inline-items elementor-icon-list-items elementor-post-info\">\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-c6921fe elementor-inline-item\" itemprop=\"author\">\n\t\t\t\t\t\t<a href=\"https:\/\/baowusteelcompany.com\/author\/infostainlesteel-cn-com\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"far fa-user-circle\"><\/i>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-author\">\n\t\t\t\t\t\t\t\t\t\tChina BaoWu Steel\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t<\/li>\n\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-4120b71 elementor-inline-item\" itemprop=\"datePublished\">\n\t\t\t\t\t\t<a href=\"https:\/\/baowusteelcompany.com\/2012\/06\/01\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-calendar\"><\/i>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-date\">\n\t\t\t\t\t\t\t\t\t\tJune 1, 2012\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t<\/li>\n\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-f64ceae elementor-inline-item\">\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"far fa-clock\"><\/i>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-time\">\n\t\t\t\t\t\t\t\t\t\t5:05 am\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-d6026ac elementor-inline-item\" itemprop=\"commentCount\">\n\t\t\t\t\t\t<a href=\"https:\/\/baowusteelcompany.com\/our-steel-number-expression-method.html#respond\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"far fa-comment-dots\"><\/i>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-comments\">\n\t\t\t\t\t\t\t\t\t\tNo Comments\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t<\/li>\n\t\t\t\t<\/ul>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b88ae98 elementor-widget elementor-widget-heading\" data-id=\"b88ae98\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">A. Overview of China's steel number expression method<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4be4b80c elementor-widget elementor-widget-text-editor\" data-id=\"4be4b80c\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Steel number for short, is the name taken for each specific steel product, is a common language for people to understand the steel. China&#8217;s steel number, according to the national standard &#8220;Steel Product Grade Method&#8221; (GB221-79), using the hanyu pinyin letters, chemical element symbols and Arabic numerals combined method of expression. That is.<\/p><p>\u2460 The chemical elements in the steel number are expressed by international chemical symbols, such as Si, Mn, Cr &#8230;&#8230;, etc. Mixed rare earth elements with &#8221; RE &#8221; (or &#8221; Xt &#8220;) said.<\/p><p>\u2461 product name, use, smelting and pouring methods, etc., generally using the abbreviated letters of Hanyu Pinyin, see table.<\/p><p>\u2462 steel in the main chemical element content ( % ) using Arabic numerals.<\/p><p>Table: GB standard steel number used in the abbreviated letters and their meanings<\/p><p>Translated with www.DeepL.com\/Translator (free version)<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7de4c3b8 elementor-widget elementor-widget-image\" data-id=\"7de4c3b8\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/baowusteelcompany.com\/wp-content\/uploads\/2021\/11\/\u5fae\u4fe1\u56fe\u7247_20211101131101.png\" class=\"attachment-large size-large wp-image-3470\" alt=\"Our Steel Number Expression Method\" srcset=\"https:\/\/baowusteelcompany.com\/wp-content\/uploads\/2021\/11\/\u5fae\u4fe1\u56fe\u7247_20211101131101.png 800w, https:\/\/baowusteelcompany.com\/wp-content\/uploads\/2021\/11\/\u5fae\u4fe1\u56fe\u7247_20211101131101-300x225.png 300w, https:\/\/baowusteelcompany.com\/wp-content\/uploads\/2021\/11\/\u5fae\u4fe1\u56fe\u7247_20211101131101-768x576.png 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5c199d4b elementor-widget elementor-widget-text-editor\" data-id=\"5c199d4b\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<table border=\"1\" width=\"81%\" cellspacing=\"0\" cellpadding=\"0\" align=\"center\"><tbody><tr><td width=\"37%\"><p><b>Name<\/b><\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\"><b>Chinese Character<\/b><\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\"><b>Symbol<\/b><\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\"><b>Font<\/b><\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\"><b>Position<\/b><\/p><\/td><\/tr><tr><td width=\"37%\"><p>Yield point<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Yield<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">Q<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">Capitalization<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Head<\/p><\/td><\/tr><tr><td width=\"37%\"><p>Boiling stee<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">boiling<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">F<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">Capitalization<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">tail<\/p><\/td><\/tr><tr><td width=\"37%\"><p>Semi-sedated steel<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">semi<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">b<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">lowercase<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">tail<\/p><\/td><\/tr><tr><td width=\"37%\"><p>Calming steel<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">town<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">Z<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">Capitalization<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">tail<\/p><\/td><\/tr><tr><td width=\"37%\"><p>Special sedation steel<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">special town<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">TZ<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">Capitalization<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">tail<\/p><\/td><\/tr><tr><td width=\"37%\"><p>Oxygen converter (steel)<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Oxygen<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">Y<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">Capitalization<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">\u4e2d<\/p><\/td><\/tr><tr><td width=\"37%\"><p>Alkaline air converter (steel)<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Alkaline<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">J<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">Capitalization<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">\u4e2d<\/p><\/td><\/tr><tr><td width=\"37%\"><p>Free-cutting steel<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">easy<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">Y<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">Capitalization<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Head<\/p><\/td><\/tr><tr><td width=\"37%\"><p>Carbon tool steel<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Carbon<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">T<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">Capitalization<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Head<\/p><\/td><\/tr><tr><td width=\"37%\"><p>Rolling bearing steel<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Rolling<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">G<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">Capitalization<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Head<\/p><\/td><\/tr><tr><td width=\"37%\"><p>Steel for welding rod<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Weld<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">H<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">Capitalization<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Head<\/p><\/td><\/tr><tr><td width=\"37%\"><p>High grade (high quality steel)<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">High<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">A<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">Capitalization<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">tail<\/p><\/td><\/tr><tr><td width=\"37%\"><p>Special grade<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Special<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">E<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">Capitalization<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">tail<\/p><\/td><\/tr><tr><td width=\"37%\"><p>riveted screw steel<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">riveted screw<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">ML<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">Capitalization<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Head<\/p><\/td><\/tr><tr><td width=\"37%\"><p>Anchor chain steel<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Anchor<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">M<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">Capitalization<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Head<\/p><\/td><\/tr><tr><td width=\"37%\"><p>Mining Steel<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">mining<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">K<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">Capitalization<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">tail<\/p><\/td><\/tr><tr><td width=\"37%\"><p>Steel for automobile beams<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">beam<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">L<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">Capitalization<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">tail<\/p><\/td><\/tr><tr><td width=\"37%\"><p>Steel for pressure vessel<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">capacity<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">R<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">Capitalization<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">tail<\/p><\/td><\/tr><tr><td width=\"37%\"><p>Steel for multi-layer or high-pressure vessels<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">high level<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">gc<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">lowercase<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">tail<\/p><\/td><\/tr><tr><td width=\"37%\"><p>Cast steel<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Cast steel<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">ZG<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">Capitalization<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Head<\/p><\/td><\/tr><tr><td width=\"37%\"><p>Cast steel for rolls<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Casting rolls<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">ZU<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">Capitalization<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Head<\/p><\/td><\/tr><tr><td width=\"37%\"><p>Steel for Geological Drilling Tubes<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Geological<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">DZ<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">Capitalization<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Head<\/p><\/td><\/tr><tr><td width=\"37%\"><p>Hot rolled silicon steel for electrical engineering<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Electrothermal<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">DR<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">Capitalization<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Head<\/p><\/td><\/tr><tr><td width=\"37%\"><p>Cold-rolled non-oriented silicon steel for electrical engineering<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Electroless<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">DW<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">Capitalization<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Head<\/p><\/td><\/tr><tr><td width=\"37%\"><p>Cold-rolled oriented silicon steel for electrotechnical use<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Electric taking<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">DQ<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">Capitalization<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Head<\/p><\/td><\/tr><tr><td width=\"37%\"><p>Pure iron for electrotechnical use<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Electric iron<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">DT<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">Capitalization<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Head<\/p><\/td><\/tr><tr><td width=\"37%\"><p>Super<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Super<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">C<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">Capitalization<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">tail<\/p><\/td><\/tr><tr><td width=\"37%\"><p>Marine Steel<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Ship<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">C<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">Capitalization<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">tail<\/p><\/td><\/tr><tr><td width=\"37%\"><p>Bridge steel<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Bridge<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">q<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">lowercase<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">tail<\/p><\/td><\/tr><tr><td width=\"37%\"><p>Boiler steel<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">pot<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">g<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">lowercase<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">tail<\/p><\/td><\/tr><tr><td width=\"37%\"><p>Steel rail steel<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">rail<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">U<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">lowercase<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Head<\/p><\/td><\/tr><tr><td width=\"37%\"><p>Precision Alloy<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Precision<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">J<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">Capitalization<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">\u4e2d<\/p><\/td><\/tr><tr><td width=\"37%\"><p>Corrosion resistant alloys<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Corrosion resistant<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">NS<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">Capitalization<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Head<\/p><\/td><\/tr><tr><td width=\"37%\"><p>Deformation high temperature alloys<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">High Hop<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">GH<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">Capitalization<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Head<\/p><\/td><\/tr><tr><td width=\"37%\"><p>Casting high temperature alloys<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"left\">\u00a0<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">K<\/p><\/td><td valign=\"top\" width=\"15%\"><p align=\"center\">Capitalization<\/p><\/td><td valign=\"top\" width=\"16%\"><p align=\"center\">Head<\/p><\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-91337b3 elementor-widget elementor-widget-heading\" data-id=\"91337b3\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">B. The classification of our steel number representation description<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7f3bcb2 elementor-widget elementor-widget-heading\" data-id=\"7f3bcb2\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">1 \uff0e Carbon structural steel<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8f39c09 elementor-widget elementor-widget-text-editor\" data-id=\"8f39c09\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>\u2460 is composed of Q + number + quality grade symbol + deoxidation method symbol. Its steel number is crowned with &#8220;Q&#8221;, representing the yield point of the steel, followed by a number indicating the value of the yield point, the unit is MPa For example, Q235 means the yield point (\u03c3 s) for 235 MPa of carbon structural steel.<\/p><p>\u2461 If necessary, the steel number can be marked after the symbol indicating the quality grade and deoxidation method. Quality grade symbols are A, B, C, D. Deoxidation method symbols: F boiling steel; b indicates semi-sedated steel: Z indicates sedated steel; TZ indicates special sedated steel, sedated steel may not be marked symbols, that is<\/p><p>Both Z and TZ may be left unmarked. For example, Q235-AF indicates A grade boiling steel.<\/p><p>\u2462 special purpose carbon steel, such as bridge steel, marine steel, etc., basically using the carbon structural steel, but in the steel number at the end of the additional letters to indicate the purpose.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c6ec16c elementor-widget elementor-widget-heading\" data-id=\"c6ec16c\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">2 \uff0e High-quality carbon structural steel<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4c0fa5d elementor-widget elementor-widget-text-editor\" data-id=\"4c0fa5d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>\u2460 two numbers at the beginning of the steel number indicates the carbon content of the steel, to the average carbon content of a few ten thousandths, for example, the average carbon content of 0.45% of the steel, steel number &#8221; 45 &#8220;, it is not a sequential number, so can not be read as 45 steel.<\/p><p>\u2461 high quality carbon structural steel with high manganese content, the manganese element should be marked out, such as 50Mn.<\/p><p>\u2462 boiling steel, semi-sedimentation steel and special-purpose high-quality carbon structural steel should be specially marked at the end of the steel number, for example, the average carbon content of 0.1% of the semi-sedimentation steel, the steel number 10b.<\/p><p>Translated with www.DeepL.com\/Translator (free version)<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f4a263f elementor-widget elementor-widget-heading\" data-id=\"f4a263f\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">3 \uff0e Carbon tool steel<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fbddf69 elementor-widget elementor-widget-text-editor\" data-id=\"fbddf69\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>\u2460 steel number crowned with &#8221; T &#8220;, so as not to mix with other steel types.<\/p><p>\u2461 steel number in the number indicates the carbon content, to the average carbon content of a few thousandths. For example, &#8220;T 8&#8221; means the average carbon content of 0.8%.<\/p><p>\u2462 manganese content is higher, in the steel number at the end of the label &#8221; Mn &#8220;, such as &#8221; T8Mn &#8220;.<\/p><p>\u2463 senior quality carbon tool steel phosphorus, sulfur content, than the general quality carbon tool steel low, in the steel number at the end of the letter &#8221; A &#8220;, to show the difference, such as &#8221; T8MnA &#8220;.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cf0b36d elementor-widget elementor-widget-heading\" data-id=\"cf0b36d\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">4 \uff0e Free-cutting steel<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-eb63ab3 elementor-widget elementor-widget-text-editor\" data-id=\"eb63ab3\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>\u2460 steel number crowned with &#8221; Y &#8220;, to distinguish from high-quality carbon structural steel.<\/p><p>\u2461 the letter &#8220;Y&#8221; after the number indicates the carbon content, to the average carbon content of a few ten thousandths, such as the average carbon content of 0.3% of the free-cutting steel, the steel number for &#8220;Y 30&#8221;.<\/p><p>\u2462 manganese content is higher, also marked in the steel number after the &#8220;Mn&#8221;, such as &#8220;Y40Mn&#8221;.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e1f2c1d elementor-widget elementor-widget-heading\" data-id=\"e1f2c1d\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">5 \uff0e Alloy structural steel<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ff4196d elementor-widget elementor-widget-text-editor\" data-id=\"ff4196d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>\u2460 two numbers at the beginning of the steel number indicates the carbon content of the steel, to the average carbon content of a few ten thousandths, such as 40Cr.<\/p><p>\u2461 steel in the main alloying elements, in addition to individual micro-alloy elements, generally expressed as a few percent. When the average alloy content &lt; 1.5%, the steel number is generally marked only the element symbols, and not marked content, but in special cases easily confused, in the element symbols can also be marked with the number &#8221; 1 &#8220;, such as steel number &#8221; 12CrMoV &#8221; and &#8220;12Cr1MoV&#8221;, the former chromium content of 0.4-0.6%, the latter is 0.9-1.2%, the rest of the composition of all the same. When the average content of alloying elements \u2265 1.5%, \u2265 2.5%, \u2265 3.5% &#8230;&#8230;, the content should be marked after the element symbol, can be expressed accordingly as 2, 3, 4 &#8230;&#8230; and so on. For example, 18Cr2Ni4WA.<\/p><p>\u2462 steel in the vanadium V, titanium Ti, aluminum AL, boron B, rare earth RE and other alloying elements, are micro-alloying elements, although the content is very low, but still should be marked in the steel number. For example, in 20MnVB steel. Vanadium is 0.07-0.12%, boron is 0.001-0.005%.<\/p><p>\u2463 Advanced quality steel should be added at the end of the steel number &#8221; A &#8220;, to distinguish it from the general quality steel.<\/p><p>\u2464 special purpose of the alloy structural steel, steel number crowned (or suffix) on behalf of the use of the steel symbol. For example, 30CrMnSi steel for riveting screw, the steel number is expressed as ML30CrMnSi.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e848f86 elementor-widget elementor-widget-heading\" data-id=\"e848f86\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">6 \uff0e Low-alloy high-strength steel<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-62c9c19 elementor-widget elementor-widget-text-editor\" data-id=\"62c9c19\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>\u2460 steel number of the method of expression, basically the same as the alloy structural steel.<\/p><p>\u2461 low alloy high-strength steel for professional use, should be marked at the end of the steel number. For example, 16Mn steel, special steel for bridges for &#8220;16Mnq&#8221;, special steel for automobile girders for &#8220;16MnL&#8221;, special steel for pressure vessels for &#8220;16MnR &#8220;.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-70ffd62 elementor-widget elementor-widget-heading\" data-id=\"70ffd62\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">7 \uff0e Spring steel<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5be7b3c elementor-widget elementor-widget-text-editor\" data-id=\"5be7b3c\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Spring steel according to the chemical composition can be divided into two categories of carbon spring steel and alloy spring steel, the steel number representation, the former is basically the same as high-quality carbon structural steel, the latter is basically the same as alloy structural steel.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6b2a338 elementor-widget elementor-widget-heading\" data-id=\"6b2a338\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">8 \uff0e Rolling bearing steel<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8e465f6 elementor-widget elementor-widget-text-editor\" data-id=\"8e465f6\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>\u2460 steel number crowned with the letter &#8221; G &#8220;, said rolling bearing steel class.<\/p><p>\u2461 high carbon chromium bearing steel steel number of the carbon content is not marked, chromium content to a few thousandths said. For example, GCr15. Carburized bearing steel steel number, basically the same as the alloy structural steel.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-29ed9ba elementor-widget elementor-widget-heading\" data-id=\"29ed9ba\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">9 \uff0e Alloy tool steel and high-speed tool steel<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-aeb678f elementor-widget elementor-widget-text-editor\" data-id=\"aeb678f\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>\u2460 alloy tool steel steel grade average carbon content \u2265 1.0%, not marked carbon content; when the average carbon content &lt; 1.0%, expressed in parts per thousand. For example, Cr12, CrWMn, 9SiCr, 3Cr2W8V.<\/p><p>\u2461 steel alloying elements in the content of the method of expression, basically the same as the alloy structural steel. But the chromium content of the lower alloy tool steel grades, the<br \/>chromium content to a few thousandths, and in the content of the number before adding &#8221; 0 &#8220;, in order to distinguish it from the general elemental content by a few percent of the method. For example, Cr06.<\/p><p>\u2462 high-speed tool steel steel number is generally not marked out of carbon content, only marked out of the average content of various alloying elements a few percent. For example, the steel number of tungsten high-speed steel is expressed as &#8221; W18Cr4V &#8220;. Steel number crowned with the letter &#8220;C&#8221;, that its carbon content is higher than the general steel number not crowned with &#8220;C&#8221;.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9b23751 elementor-widget elementor-widget-heading\" data-id=\"9b23751\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">10 \uff0e Stainless steel and heat-resistant steel<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6d838ff elementor-widget elementor-widget-text-editor\" data-id=\"6d838ff\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>\u2460 steel number in the carbon content in parts per thousand. For example, the average carbon content of &#8220;2Cr 13&#8221; steel is 0.2%; if the carbon content of steel \u2264 0.03% or \u2264 0.08%, the steel number before the title of &#8220;00&#8221; and &#8220;0&#8221;, respectively. expressed, such as 00Cr17Ni14Mo2, 0Cr18 Ni9, etc..<\/p><p>\u2461 the main alloying elements in steel to a few percent, while titanium, niobium, zirconium, nitrogen &#8230;&#8230;, etc. are marked according to the above-mentioned alloy structural steel on the micro-alloy elements.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0d3c90e elementor-widget elementor-widget-heading\" data-id=\"0d3c90e\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">11 \uff0e Welding rod steel<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d40b023 elementor-widget elementor-widget-text-editor\" data-id=\"d40b023\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>It is crowned with the letter &#8221; H &#8221; before the steel number, to distinguish it from other steel types. For example, stainless steel welding wire for &#8221; H2Cr 13 &#8220;, can be distinguished from stainless steel &#8221; 2Cr 13 &#8220;.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-be60a43 elementor-widget elementor-widget-heading\" data-id=\"be60a43\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">12 \uff0e Electrical silicon steel<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7da1b2f elementor-widget elementor-widget-text-editor\" data-id=\"7da1b2f\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>\u2460 Steel number consists of letters and numbers. Steel number head letters DR means hot-rolled silicon steel for electricians, DW means cold-rolled non-oriented silicon steel for electricians, DQ means cold-rolled oriented silicon steel for electricians.<\/p><p>\u2461The number after the letter indicates the iron loss value (W\/kg) of 100 times.<\/p><p>\u2462 steel number with the letter &#8220;G&#8221; at the end, said in the high frequency test; not add &#8220;G&#8221;, said in the frequency of 50 waves under the test.<\/p><p>For example, the steel number DW470 indicates that the maximum value of iron loss per unit weight of electrical cold-rolled non-oriented silicon steel products at a frequency of 50 Hz is 4.7W\/kg.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dc663c2 elementor-widget elementor-widget-heading\" data-id=\"dc663c2\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">13 \uff0e Pure iron for electrical use<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a9e8c51 elementor-widget elementor-widget-text-editor\" data-id=\"a9e8c51\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>\u2460 Its grade consists of the letters &#8220;DT&#8221; and numbers, &#8220;DT&#8221; indicates pure iron for electrician, and the numbers indicate the sequential numbers of different grades, such as DT3.<\/p><p>\u2461 The letters added after the numbers indicate electromagnetic properties: A &#8211; senior, E &#8211; special, C &#8211; super, e.g. DT 8A.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-32a4771 elementor-widget elementor-widget-heading\" data-id=\"32a4771\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">C. Part of the old and new steel grade comparison<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3e48357 elementor-widget elementor-widget-heading\" data-id=\"3e48357\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">1, carbon steel new and old standard steel number comparison.<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c8bee32 elementor-widget elementor-widget-text-editor\" data-id=\"c8bee32\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>GB700-88 new standard with reference to the adoption of international standards ISO630 &#8220;structural steel&#8221;, while GB700-79 old standards mainly refer to the former Soviet Union IOCT380, so that the two steel number of the method of expression and the technical requirements specified for each steel number are not the same, now the old and new standard steel number control as follows.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-114a857 elementor-widget elementor-widget-text-editor\" data-id=\"114a857\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<table border=\"1\" cellspacing=\"0\" cellpadding=\"0\"><tbody><tr><td colspan=\"2\" valign=\"top\" width=\"47%\"><p align=\"center\">GB700-88 Standard<\/p><\/td><td colspan=\"2\" valign=\"top\" width=\"53%\"><p align=\"center\">GB700-79 Standard<\/p><\/td><\/tr><tr><td valign=\"top\" width=\"7%\"><p align=\"left\">Steel number<\/p><\/td><td valign=\"top\" width=\"39%\"><p align=\"center\">Technical conditions<\/p><\/td><td valign=\"top\" width=\"7%\"><p align=\"left\">Steel number<\/p><\/td><td valign=\"top\" width=\"45%\"><p align=\"center\">Technical conditions<\/p><\/td><\/tr><tr><td width=\"7%\"><p align=\"left\">Q195<\/p><\/td><td valign=\"top\" width=\"39%\"><p align=\"left\">The chemical composition and mechanical properties (\u03c3s,\u03c3b,\u03b4 and cold bending) must be guaranteed regardless of the grade.<\/p><p align=\"left\">For products such as rolled sheets and coils, the guaranteed mechanical properties can be separately specified in the relevant standards according to the product characteristics and usage requirements.<\/p><\/td><td width=\"7%\"><p align=\"left\">A1<\/p><p align=\"left\">B1<\/p><\/td><td width=\"45%\"><p align=\"left\">The guaranteed mechanical properties (\u03c3s,\u03c3b,\u03b4 and cold bending) of A1 steel and the guaranteed chemical composition of B1 steel are the same as Q195.<\/p><p align=\"left\">Cold-forming test for A1 steel is an additional guarantee condition<\/p><p align=\"left\">No. 1 steel without special class<\/p><\/td><\/tr><tr><td width=\"7%\"><p align=\"left\">Q215<\/p><\/td><td valign=\"top\" width=\"39%\"><p align=\"left\">A and B grades, the specified chemical composition and mechanical properties must be guaranteed<\/p><p align=\"left\">Q 215A No impact test<\/p><p align=\"left\">Q215B must be room temperature impact test, with V-notch specimens<\/p><\/td><td width=\"7%\"><p align=\"left\">A2<\/p><p align=\"left\">C2<\/p><\/td><td width=\"45%\"><p align=\"left\">A2 steel to ensure the mechanical properties, C2 steel to ensure the chemical composition and mechanical properties, and Q215 steel is basically the same<\/p><\/td><\/tr><tr><td width=\"7%\"><p align=\"left\">Q235<\/p><\/td><td valign=\"top\" width=\"39%\"><p align=\"left\">A, B, C, D grades, the specified chemical composition and mechanical properties are required to ensure<\/p><p align=\"left\">Q 235A is not impact tested<\/p><p align=\"left\">Q235B must be room temperature impact test, with V-notch specimens<\/p><p align=\"left\">Q 235C, Q235D for important welded structures, the former in 0 O C impact test, the latter in -20 O C impact test, specimens, specimens as above<\/p><\/td><td width=\"7%\"><p align=\"left\">A3<\/p><p align=\"left\">C3<\/p><\/td><td width=\"45%\"><p align=\"left\">A3 steel guaranteed mechanical properties, C3 steel guaranteed chemical composition and mechanical properties, and Q235 steel is basically the same<\/p><p align=\"left\">Additional guaranteed impact test at room temperature for A3 steel, with U-notch specimens<\/p><p align=\"left\">C3 steel with additional guaranteed impact test at room temperature or -20 O C, specimen as above<\/p><\/td><\/tr><tr><td width=\"7%\"><p align=\"left\">Q255<\/p><\/td><td valign=\"top\" width=\"39%\"><p align=\"left\">A and B grades, the specified chemical composition and mechanical properties must be guaranteed<\/p><p align=\"left\">Q 255A without impact test<\/p><p align=\"left\">Q255B shall be subjected to room temperature impact test with V-notch specimens<\/p><\/td><td width=\"7%\"><p align=\"left\">A4<\/p><p align=\"left\">C4<\/p><\/td><td width=\"45%\"><p align=\"left\">A4 steel guaranteed mechanical properties, C4 steel guaranteed chemical composition and mechanical properties, and Q255 steel is basically the same<\/p><p align=\"left\">C4 steel additional guaranteed impact test, with U-notch specimens<\/p><\/td><\/tr><tr><td width=\"7%\"><p align=\"left\">Q275<\/p><\/td><td valign=\"top\" width=\"39%\"><p align=\"left\">Regardless of grade, the specified chemical composition and mechanical properties shall be guaranteed<\/p><\/td><td width=\"7%\"><p align=\"left\">C5<\/p><\/td><td valign=\"top\" width=\"45%\"><p align=\"left\">The guaranteed chemical composition and mechanical properties of C5 steel are essentially the same as those of Q275 steel<\/p><\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ad70e78 elementor-widget elementor-widget-heading\" data-id=\"ad70e78\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">2, low-alloy steel is currently using GB\/T1591-94 instead of 1591-88, now some of the old and new steel grades against the following.<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-471cee9 elementor-widget elementor-widget-text-editor\" data-id=\"471cee9\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<table border=\"1\" cellspacing=\"0\" cellpadding=\"0\"><tbody><tr><td valign=\"top\" width=\"49%\"><p align=\"left\">GB\/T1591-94<\/p><\/td><td valign=\"top\" width=\"51%\"><p align=\"left\">GB1591-88<\/p><\/td><\/tr><tr><td valign=\"top\" width=\"49%\"><p align=\"left\">Q295<\/p><\/td><td valign=\"top\" width=\"51%\"><p align=\"left\">09MnV 09MnNb 12Mn<\/p><\/td><\/tr><tr><td valign=\"top\" width=\"49%\"><p align=\"left\">Q345<\/p><\/td><td valign=\"top\" width=\"51%\"><p align=\"left\">12MnV 16Mn 16MnRE<\/p><\/td><\/tr><tr><td valign=\"top\" width=\"49%\"><p align=\"left\">Q390<\/p><\/td><td valign=\"top\" width=\"51%\"><p align=\"left\">15MnV 15MnTi 16MnNb<\/p><\/td><\/tr><tr><td valign=\"top\" width=\"49%\"><p align=\"left\">Q420<\/p><\/td><td valign=\"top\" width=\"51%\"><p align=\"left\">15MnVN 14MnVTiRE<\/p><\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Our Steel Number Expression Method A. Overview of China&#8217;s steel number expression method Steel number for short, is the name taken for each specific steel product,<span class=\"excerpt-hellip\"> [\u2026]<\/span><\/p>\n","protected":false},"author":1,"featured_media":3470,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"rank_math_lock_modified_date":false,"footnotes":""},"categories":[17],"tags":[],"class_list":["post-3469","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-products-knowledge"],"_links":{"self":[{"href":"https:\/\/baowusteelcompany.com\/wp-json\/wp\/v2\/posts\/3469"}],"collection":[{"href":"https:\/\/baowusteelcompany.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/baowusteelcompany.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/baowusteelcompany.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/baowusteelcompany.com\/wp-json\/wp\/v2\/comments?post=3469"}],"version-history":[{"count":8,"href":"https:\/\/baowusteelcompany.com\/wp-json\/wp\/v2\/posts\/3469\/revisions"}],"predecessor-version":[{"id":4800,"href":"https:\/\/baowusteelcompany.com\/wp-json\/wp\/v2\/posts\/3469\/revisions\/4800"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/baowusteelcompany.com\/wp-json\/wp\/v2\/media\/3470"}],"wp:attachment":[{"href":"https:\/\/baowusteelcompany.com\/wp-json\/wp\/v2\/media?parent=3469"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/baowusteelcompany.com\/wp-json\/wp\/v2\/categories?post=3469"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/baowusteelcompany.com\/wp-json\/wp\/v2\/tags?post=3469"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}