GB/T 20887.4-2022
Continuously hot rolled high strength steel sheet and strip for automobile—Part 4: Transformation induced plasticity steel (English Version)

Standard No.

GB/T 20887.4-2022

Language

Chinese, Available in English version

Release Date

2022

Published By

国家市场监督管理总局、中国国家标准化管理委员会

Latest

GB/T 20887.4-2022

Replace

GB/T 20887.4-2010

Scope

This document specifies the terms and definitions, classification and designation method, order content, size, shape, weight, technical requirements, test methods, inspection rules, packaging, Logo and quality certificate. This document is applicable to continuously rolled hot-rolled phase-transformation-induced plasticity steel strips with a thickness not greater than 6.0 mm, as well as cross-cut steel plates and slit-cut steel strips (hereinafter referred to as "steel plates and steel strips").

GB/T 20887.4-2022 Referenced Document

• GB/T 10561 Standard grading chart microscopic examination method for determination of non-metallic inclusion content in steel*， 2023-05-23 Update
• GB/T 13298 Inspection methods of microstructure for metals
• GB/T 17505 Steel and steel products.General technical delivery requirements
• GB/T 20066 Steel and iron.Sampling and preparation of samples for the determination of chemical composition
• GB/T 20123 Steel and iron - Determination of total carbon and sulfur content Infrared absorption method after combustion in an induction furnace (routine method)
• GB/T 20125 Low-alloy steel.Determination of multi-element contents.Inductively coupled plasma atomic emission spectrometric method
• GB/T 222 Permissible tolerances for chemical composition of steel products
• GB/T 223.12 Methods for chemical analysis of iron,steel and alloy--The sodium carbonate separation-diphenyl carbazide photometric method for the determination of chromium content
• GB/T 223.23 Iron,,steel and alloy.Determination of nickel content.The dimethylglyoxime spectrophotometric method
• GB/T 223.26 Iron,steel and alloy.Determination of molybdenum content.The thiocyanate spectrophotometric method
• GB/T 223.5 Steel and iron.Determination of acid-soluble silicon and total silicon content.Reduced molybdosilicate spectrophotometric method
• GB/T 223.53 Methods for chemical analysis of iron,steel and alloy--The flame atomic absorption spectrophotometric method for the determination of copper content
• GB/T 223.54 Iron, steel and alloy—Determination of nickel content—Flame atomic absorption spectrometric method*， 2022-07-11 Update
• GB/T 223.59 Iron,steel and alloy.Determination of phosphorus content.Bismuth phosphomolybdate blue spectrophotometic method and antimony phosphomolybdate blue spectruophotometric method
• GB/T 223.60 Methods for chemical analysis of iron, steel and alloy--The perchloric acid dehydration gravimetric method for the determination of silicon content
• GB/T 223.64 Iron,steel and alloy.Determination of manganese content.Flame atomic absorption spectrometric method
• GB/T 223.85 Steel and iron.Determination of sulfur content.Infrared absorption method after combustion in an induction furnace
• GB/T 223.86 Steel and iron.Determination of total carbon content.Infrared absorption method after combustion in an induction furnace
• GB/T 223.9 Iron,steel and alloy.Determination of aluminium content.Chrome azurol S photometric method
• GB/T 228.1 Metallic materials—Tensile testing—Part 1: Method of test at room temperature
• GB/T 24174 Steel—Determination of Bake-Hardening-Index (BH)
• GB/T 247 General rule of package,mark and certification for steel plates(sheets)and strips
• GB/T 2975 Steel and steel products.Location and preparation of samples and test pieces for mechanical testing
• GB/T 38813 General requirements for hot-rolled pickled steel sheet and strip
• GB/T 4336 Determination of multi-element content in carbon steel and medium and low alloy steel Spark discharge atomic emission spectrometry (conventional method) Amendment No. 1
• GB/T 5028 Metallic materials.Sheet and strip.Determination of tensile strain hardening exponent
• GB/T 6394 Determination of estimating the average grain size of metal
• GB/T 709 "Dimension,shape,weight and tolerance for hot rolled steel strip,plate and sheet"
• GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values

GB/T 20887.4-2022 history

• 2022 GB/T 20887.4-2022 Continuously hot rolled high strength steel sheet and strip for automobile—Part 4: Transformation induced plasticity steel
• 2010 GB/T 20887.4-2010 Continuously hot rolled high strength steel sheet and strip for automobile.Part 4:Transformation induced plasticity steel

GB/T 20887.4-2022 -All Parts