GB/T 20887.3-2022 Translated English of Chinese Standard (GB/T20887.3-2022, GBT 20887.3-2022): Continuously hot rolled high strength steel sheet and strip for automobile -- Part 3: Dual phase steel
https://www.chinesestandard.net, 21 aug. 2022 - 17 sidor
This document specifies the terms and definitions, classification and designation representation method, dimension, shape, weight, technical requirements, test methods, inspection rules, package, mark and certification of continuously hot rolled high strength dual phase steel sheet and strip for automobile. This document applies to continuously hot rolled dual phase steel strips with a thickness of not more than 6.0 mm, steel sheets cross-cut from them, and longitudinally-cut steel strips.
according Add the provisions analysis of iron applies carbon Change chemical analysis chemical composition China content GB/T continuously hot rolled contract defective designation representation method determine the technical dimension Dual phase steel edition English flame atomic absorption force plastic elongation high strength steel hot rolled high hot rolled pickled indicated induction furnace Infrared absorption method initials inspection document Inspection items longitudinally-cut steel strips mark and certification maximum force plastic mechanical properties method after combustion Methods for chemical oiled package provisions of GB/T purchaser requirements for continuously rolled high strength rolled pickled surface rounding rules shape sheet and strip similar designations slight specified minimum Spectrometric Method Spectrophotometric Method GB/T standards steel and alloy Steel and iron Steel Products steel sheets cross-cut strain hardening exponent strength steel sheet strip for automobile strips shall comply supplier Table technical requirements tensile strain hardening term and definition test methods thickness weight