GB/T 20564.2-2017: Translated English of Chinese Standard. (GBT 20564.2-2017, GB/T20564.2-2017, GBT20564.2-2017): Continuously Cold Rolled High Strength Steel Sheet and Strip for Automobile - Part 2: Dual Phase Steel
https://www.chinesestandard.net, 2017 M11 17 - 15 pages
This Part of GB/T 20564 specifies the terms and definitions, classification and grade expression method, ordering content, dimension, shape, weight, technical requirements, test methods, inspection rules, package, marking and quality certificate of cold rolled high strength dual phase steel sheet and strip.
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Terms and Definitions
Dimension Shape and Weight
Appendix A Informative Chemical Compositions of Steel
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8.2 The inspection bainite chemical compositions melting classification of steel Cold Rolled compositions melting analysis dimension and roughness Dual Phase Steel Edition elongation after break elongation is less Grade Expression Method greater than 30t High-level surface FC initials of Cold initials of Dual manufacture completion date Marking and Quality martensite method of steel minimum tensile strength minimum yield strength negotiated when ordering oil painting ordering contract Piece by piece/roll piece/roll by roll provisions of GB/T provisions of Table purchaser has special refer to Table Relative high-level surface roughness accuracy sheet and strip specified minimum tensile specified minimum yield standard grades steel can refer steel sheet Strain hardening index strain range strip can refer strip shall conform supplier shall guarantee surface B 0.9 surface of steel Surface Quality Classification Surface Quality Levels Surface Structure Code Table A.1 tensile strength value tensile test Test Method uniform elongation Usage and Classification yield strength value