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 Steelhttps://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. |
Contents
Terms and Definitions | 7 |
Ordering Content | 8 |
Dimension Shape and Weight | 9 |
Test Methods | 11 |
Inspection Rules | 12 |
Appendix A Informative Chemical Compositions of Steel | 14 |
International Grades | 15 |
Common terms and phrases
4.1.3 The surface bainite batch 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 FB initials of Cold initials of Dual manufacture completion date Marking and Quality martensite mechanical properties method of steel minimum tensile strength minimum yield strength negotiated when ordering oil painting ordering contract Package mode Piece by piece/roll piece/batch GB/T 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 strip can refer strip shall conform supplier shall guarantee surface B 0.9 Surface Quality Classification Surface Quality Levels Surface Structure Code tensile strength value tensile test Test Method uniform elongation Usage and Classification yield strength value