GB/T 20564.14-2023 Translated English of Chinese Standard (GB/T 20564.14-2023, GBT20564.14-2023): Continuously cold rolled high strength steel sheet and strip for automobile - Part 14: Low density steel
https://www.chinesestandard.net, 2023 M10 19 - 15 pages
This Document specifies the designation expression and classification, ordering content, size, shape, weight, technical requirements, test methods, inspection rules, packaging, marking and quality certificates of continuously cold-rolled low-density high-strength steel sheets and strips for automobiles. This Document applies to continuously cold-rolled low-density high-strength steel sheets and strips (hereinafter referred to as "steel sheets and strips") with a thickness of 0.6mm~3.0mm, which are mainly used to make structural parts and reinforcement parts of the automobile.
aims to determine Blue Spectrophotometric Method Chemical Composition Smelting coil cold-rolled low-density high-strength Composition Smelting Analysis Continuously Cold continuously cold-rolled low-density defects designation expression determine the technical Document Dual Phase Steel expression and classification high-strength steel sheets induced plasticity high-strength Induced Plasticity Steel Inspection Items inspection rules Low Alloy Steel Low Density Steel low-density high-strength steel mainly marking and quality Martensitic mechanical properties method after combustion methods of steel negotiated when ordering ordering content outer panels Phosphomolybdate Blue Spectrophotometric Pitting surface Shiny provisions of GB/T quality certificates Quenching and Partitioning Reference Value reinforcements requirements for continuously Sampling Methods Sampling Quantities sheets and strips shown in Table special requirements Spectrophotometric Method GB/T Steel and Alloy Steel and iron steel strips Strip for Automobile strips shall comply supplier surface quality level surface structure technical requirements Tensile test test methods Transformation Induced Plasticity Twinning Induced Plasticity unevenness accuracy Value on Chemical yield strength