GB/T 20887.5-2022 Translated English of Chinese Standard (GB/T20887.5-2022, GBT 20887.5-2022): Continuously hot rolled high strength steel sheet and strip for automobile -- Part 5: Martensitic steelhttps://www.chinesestandard.net, 21. 8. 2022 - Počet stran: 16 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 hot rolled high strength martensitic steel sheet and strip for automobile. This document applies to continuously hot rolled martensitic steel strips with a thickness of not more than 6.0 mm, steel sheets cross-cut from them, and longitudinally-cut steel strips. |
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according analysis of iron applies carbon Change chemical analysis chemical composition China coil content GB/T continuously hot rolled contract defective Designation and chemical designation representation method determine the technical dimension Dual phase steel edition flame atomic absorption high strength steel hot rolled high hot rolled pickled indicated induction furnace Infrared absorption method initials inspection document Inspection items inspection rules issued longitudinally-cut steel strips manufacture mark and certification Martensitic steel Metallic method after combustion Methods for chemical Note oiled package provisions of GB/T purchaser requirements for continuously rolled high strength rolled martensitic steel rolled pickled surface rounding rules shape sheet and strip similar designations slight Smelting specified minimum spectrophotometric method GB/T standards steel and alloy Steel and iron Steel Products steel sheets cross-cut strength steel sheet strip for automobile strips shall comply structure supplier Surface quality level Table technical requirements term and definition test methods thickness weight