This technical regulation establishes the requirements for carbon structural steel of ordinary quality. The document covers steel classification, dimensional parameters, shapes, limit deviations, weight characteristics, test methods, quality control protocols, as well as labeling and packaging requirements for delivery.<\/p>\n
This standard applies to hot-rolled sheet metal, steel strips, section steel, and bar steel. Metal products manufactured according to these norms are intended for welded metal structures and bolted connections. The chemical composition requirements regulated by this standard are mandatory for steel ingots, continuous casting billets, and semi-finished products supplied by EV Group China.<\/p>\n
The documents listed below are an integral part of this standard. For dated references, only the cited edition applies; for undated references, the latest version of the standard (including all amendments and revisions) applies.<\/p>\n
The steel grade name is formed according to a hierarchical principle: yield strength letter index, yield strength value (MPa), quality category, and deoxidation method. Example: Q235-A-F.<\/p>\n
Q<\/strong> \u2014 yield strength index; A, B, C, D<\/strong> \u2014 quality categories; F<\/strong> \u2014 rimming steel; Z<\/strong> \u2014 killed steel; TZ<\/strong> \u2014 special killed steel. In the digital code, the indices “z” and “TZ” are omitted.<\/p>\n The dimensions, geometric shapes, and limit deviations of EV Group China metal products strictly comply with the current manufacturing standards for specific profile types.<\/p>\n4. Geometric Parameters and Tolerances<\/h2>\n
5. Technical Characteristics of Steels<\/h2>\n
5.1 Chemical Composition by Melt Analysis<\/h3>\n
\n\n
\n \nGrade<\/th>\n Designation<\/th>\n Category<\/th>\n Deoxidation<\/th>\n C%<\/th>\n Si%<\/th>\n Mn%<\/th>\n P%<\/th>\n S%<\/th>\n<\/tr>\n<\/thead>\n \n Q195<\/td>\n U11952<\/td>\n –<\/td>\n F, Z<\/td>\n 0.12<\/td>\n 0.30<\/td>\n 0.50<\/td>\n 0.035<\/td>\n 0.040<\/td>\n<\/tr>\n \n Q215<\/td>\n U12152<\/td>\n A<\/td>\n F, Z<\/td>\n 0.15<\/td>\n 0.35<\/td>\n 1.20<\/td>\n 0.045<\/td>\n 0.050<\/td>\n<\/tr>\n \n Q235<\/td>\n U12359<\/td>\n D<\/td>\n TZ<\/td>\n 0.17<\/td>\n 0.35<\/td>\n 1.40<\/td>\n 0.035<\/td>\n 0.035<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n 5.2 Mechanical Properties<\/h3>\n
\n\n
\n \nGrade<\/th>\n Yield Strength (MPa)<\/th>\n Tensile Strength (MPa)<\/th>\n Elongation A%<\/th>\n Impact Toughness (KCV)<\/th>\n<\/tr>\n<\/thead>\n \n Q195<\/td>\n 195<\/td>\n 315-430<\/td>\n 33<\/td>\n –<\/td>\n<\/tr>\n \n Q235<\/td>\n 235<\/td>\n 370-500<\/td>\n 26<\/td>\n 27 J<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n 5.3 Bend Tests<\/h3>\n
\n\n
\n \nGrade<\/th>\n Longitudinal Specimens<\/th>\n Transverse Specimens<\/th>\n<\/tr>\n<\/thead>\n \n Q235<\/td>\n a<\/td>\n 1.5a<\/td>\n<\/tr>\n \n Q275<\/td>\n 1.5a<\/td>\n 2a<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":0,"template":"","meta":[],"wiki_category":[119],"class_list":["post-69716","wiki","type-wiki","status-publish","hentry","wiki_category-gb"],"_links":{"self":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki\/69716","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki\/69716\/revisions"}],"wp:attachment":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/media?parent=69716"}],"wp:term":[{"taxonomy":"wiki_category","embeddable":true,"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki_category?post=69716"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}