GB/T 20887.2-2022 Translated English of Chinese Standard (GB/T20887.2-2022, GBT 20887.2-2022): Continuously hot rolled high strength steel sheet and strip for automobile -- Part 2: High hole expansion steel
https://www.chinesestandard.net, 21 août 2022 - 17 pages
This document specifies the terms and definitions, classification and designation representation method, order content, dimension, shape, weight, technical requirements, test methods, inspection rules, package, mark and certification of continuously hot rolled high-strength high hole expansion steel sheet and strip for automobile. This document applies to continuously hot rolled steel strips with high hole expansion property 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 coil content GB/T continuously hot rolled contract defective designation representation method determine the technical dimension edition elongation after fracture English flange force plastic elongation formability High hole expansion high strength steel hole expansion steel hot rolled high hot rolled pickled indicated initials inspection document less limit longitudinally-cut steel strips manufacture mark and certification mechanical properties Methods for chemical microstructure oiled package provisions of GB/T purchaser references requirements for continuously rolled high strength rolled pickled surface rounding 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 structures supplier Table technical requirements tensile strain hardening tensile strength term and definition test methods thickness weight