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See Chinese contents: GB/T 20887.5-2022 GB/T 20887.5-2022: Continuously hot rolled high strength steel sheet and strip for automobile -- Part 5: Martensitic steel
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.
