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GB/T 20564.13-2023 (GBT20564.13-2023)

GB/T 20564.13-2023_English: PDF (GBT 20564.13-2023, GBT20564.13-2023)
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GB/T 20564.13-2023English170 Add to Cart 0--9 seconds. Auto-delivery Continuously cold rolled high strength steel sheet and strip for automobile - Part 13: Medium manganese steel Valid GB/T 20564.13-2023

Standard ID GB/T 20564.13-2023 (GB/T20564.13-2023)
Description (Translated English) Continuously cold rolled high strength steel sheet and strip for automobile - Part 13: Medium manganese steel
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard H46
Classification of International Standard 77.140.50
Word Count Estimation 10,124
Date of Issue 2023-08-06
Date of Implementation 2024-03-01
Drafting Organization Anshan Iron and Steel Co., Ltd., Metallurgical Industry Information Standards Research Institute, Hunan Valin Lianyuan Iron and Steel Co., Ltd., Shougang Group Co., Ltd.
Administrative Organization National Steel Standardization Technical Committee (SAC/TC 183)
Proposing organization China Iron and Steel Industry Association
Issuing agency(ies) State Administration for Market Regulation, National Standardization Administration

Standards related to: GB/T 20564.13-2023

GB/T 20564.13-2023
ICS 77.140.50
CCS H 46
Continuously Cold Rolled High Strength Steel Sheet and
Strip for Automobile – Part 13: Medium Manganese Steel
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword ... 3
Introduction ... 5
1 Scope ... 7
2 Normative References ... 7
3 Terms and Definitions ... 8
4 Designation Expression and Classification ... 9
5 Order Contents ... 10
6 Size, Shape and Weight ... 10
7 Technical Requirements ... 10
8 Test Method ... 12
9 Inspection Rules ... 13
10 Packaging, Marking and Quality Certificate ... 13
Appendix A (Informative) Reference Value on Chemical Composition (Smelting
Analysis) of Steel ... 14
Bibliography ... 15
This Document was drafted as per the rules specified in GB/T 1.1-2020 Directives for
Standardization – Part 1: Rules for the Structure and Drafting of Standardizing Documents.
This Document is Part 13 of GB/T 20564 Continuously Cold Rolled High Strength Steel Sheet
and Strip for Automobile. GB/T 20564 consists of the following parts:
--- Part 1: Bake Hardening Steel;
--- Part 2: Dual Phase Steel;
--- Part 3: High Strength Interstitial Free Steel;
--- Part 4: High Strength Low Alloy Steel;
--- Part 5: Isotropic Steel;
--- Part 6: Transformation Induced Plasticity Steel;
--- Part 7: Martensitic Steel;
--- Part 8: Complex Phase Steel;
--- Part 9: Quenching and Partitioning Steel;
--- Part 10: Twinning Induced Plasticity Steel;
--- Part 11: Carbon Manganese Steel;
--- Part 12: Dual Phase Steel with high Formability;
--- Part 13: Medium Manganese Steel;
--- Part 14: Low Density Steel.
Please note some contents of this Document may involve patents. The issuing agency of this
Document shall not assume the responsibility to identify these patents.
This Document was proposed by China Iron & Steel Association.
This Document shall be under the jurisdiction of National Technical Committee on Steel of
Standardization Administration of China (SAC/TC 183).
Drafting organizations of this Document: Angang Steel Company Limited; China Metallurgical
Information and Standardization Institute; Hunan Valin Lianyuan Iron and Steel Co., Ltd.; and
Shougang Group Co., Ltd.
Continuously Cold Rolled High Strength Steel Sheet and
Strip for Automobile – Part 13: Medium Manganese Steel
1 Scope
This Document specifies the designation expression method and classification, ordering content,
size, shape, weight, technical requirements, test methods, inspection rules, packaging, marking
and quality certificate of continuously cold-rolled medium-manganese high-strength steel
sheets and strips for automobile.
This Document applies to continuously cold-rolled medium-manganese high-strength steel
sheets and strips (hereinafter referred to as "steel sheets and strips") with a thickness of
1.0mm~2.5mm, which are mainly used to make structural parts and reinforcement parts of the
2 Normative References
The provisions in following documents become the essential provisions of this Document
through reference in this Document. For the dated documents, only the versions with the dates
indicated are applicable to this Document; for the undated documents, only the latest version
(including all the amendments) is applicable to this Document.
GB/T 223.4 Alloyed steel - Determination of manganese content - Potentiometric or visual
titration method
GB/T 223.5 Steel and iron - Determination of acid-soluble silicon and total silicon content
- Reduced molybdosilicate spectrophotometric method
GB/T 223.9 Iron steel and alloy - Determination of aluminum content - Chrom azurol S
photometric method
GB/T 223.40 Iron, Steel and Alloy - Determination of Niobium Content by the
Sulphochlorophenol S Spectrophotometric Method
GB/T 223.59 Iron, Steel and Alloy - Determination of Phosphorus Content - Bismuth
Phosphomolybdate Blue Spectrophotometric Method and Antimony Phosphomolybdate
Blue Spectrophotometric Method
GB/T 223.76 Methods for chemical analysis of iron, steel and alloy The flame atomic
absorption spectrometric method for the determination of vanadium content
GB/T 223.84 Steel and iron - Determination of titanium content - Diantipyrylmethane
spectrophotometric 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 228.1-2021 Metallic materials - Tensile testing - Part 1: Method of test at room
GB/T 247 General rule of package mark and certification for steel plates (sheets) and strips
GB/T 708 Dimension, shape, weight and tolerance for cold-rolled steel strip and sheet
GB/T 2523 Measuring method of surface roughness, peak count and waviness for cold-
rolled metal sheet and strip
GB/T 2975 Steel and Steel Products - Location and Preparation of Test Pieces for
Mechanical Testing
GB/T 8170 Rules of rounding off for numerical values & expression and judgement of
limiting values
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
3 Terms and Definitions
For the purposes of this Document, the following terms and definitions apply.
3.1 Medium manganese steel
The steel with manganese content of 3% ~ 10%; it forms a complex phase structure containing
metastable austenite through reverse transformation of austenite; its strength and plasticity are
improved through phase change induced plasticity or twin induced plasticity; and its strong
plastic product is generally no less than 30 GPa%.
5 Order Contents
5.1 A contract or order based on this Document includes the following contents:
a) Product name (steel sheet or strip);
b) This Document number;
c) Designation;
d) Specification, dimension, and unevenness accuracy;
e) Surface quality level;
f) Surface structure;
g) Edge state;
h) Packaging method;
i) Weight;
j) Purpose;
k) Other special requirements.
5.2 If the size and unevenness accuracy, surface quality level, surface structure type, edge
condition, packaging and other information are not specified in the order contract, the products
in this Document shall be supplied as per the cutting-edge steel sheets and strips based on
ordinary size and unevenness accuracy, higher surface, and pitting surface structure. They are
packaged according to the packaging method provided by the supplier.
6 Size, Shape and Weight
The size, shape, weight and tolerance of steel sheets and strips shall comply with the provisions
of GB/T 708.
7 Technical Requirements
7.1 Chemical composition
See Appendix A for reference values of chemical composition (smelting analysis) of steel. If
there are other special requirements for chemical composition, they shall be negotiated when