GB/T 20564.4-2022_English: PDF (GB/T20564.4-2022)
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Continuously cold rolled high strength steel sheet and strip for automobile - Part 4：High strength low alloy steel
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GB/T 20564.4-2022
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| GB/T 20564.4-2010 | English | 85 |
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Continuously cold rolled high strength steel sheet and strip for automobile -- Part 4: High strength low alloy steel
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GB/T 20564.4-2010
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| Standard ID | GB/T 20564.4-2022 (GB/T20564.4-2022) | | Description (Translated English) | Continuously cold rolled high strength steel sheet and strip for automobile - Part 4��High strength low alloy steel | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H46 | | Classification of International Standard | 77.140.50 | | Date of Issue | 2022-07-11 | | Date of Implementation | 2023-02-01 | | Older Standard (superseded by this standard) | GB/T 20564.4-2010 | | Standard ID | GB/T 20564.4-2010 (GB/T20564.4-2010) | | Description (Translated English) | Continuously cold rolled high strength steel sheet and strip for automobile. Part 4: High strength low alloy steel | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H46 | | Classification of International Standard | 77.140.50 | | Word Count Estimation | 10,174 | | Date of Issue | 2010-09-02 | | Date of Implementation | 2011-06-01 | | Quoted Standard | GB/T 223.5; GB/T 223.9; GB/T 223.13; GB/T 223.16; GB/T 223.17; GB/T 223.40; GB/T 223.59; GB/T 223.60; GB/T 223.63; GB/T 223.64; GB/T 223.67; GB/T 223.68; GB/T 223.69; GB/T 223.71; GB/T 223.72; GB/T 223.75; GB/T 223.76; GB/T 223.78; GB/T 228; GB/T 247; GB/T 708; GB/T 2523; GB/T 2975; GB/T 4336; GB/T 8170; GB/T 17505; GB/T 20066; GB/T 20123; GB/T 20125; GB/T 20126 | | Drafting Organization | Baoshan Iron & Steel Co., Ltd. | | Administrative Organization | National Steel Standardization Technical Committee | | Regulation (derived from) | National Standard Approval Announcement 2010 No.4 (Total No.159) | | Proposing organization | China Iron and Steel Association | | Issuing agency(ies) | Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China; Standardization Administration of China | | Summary | This standard specifies the cold rolled high strength low alloy steel sheet and strip (hereinafter referred to as ugly steel strip) dimensions, shape, Weight, technical requirements, test methods, inspection rules, packaging, marking and quality certification, etc. This section applies to a thickness of not more than 3. 0mm, mainly used in the production of automotive parts and reinforcement of structural steel sheet and strip. |
GB/T 20564.4-2022
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.50
CCS H 46
Replacing GB/T 20564.4-2010
Continuously Cold Rolled High Strength Steel Sheet and
Strip for Automobile - Part 4.High Strength Low Alloy Steel
ISSUED ON. JULY 11, 2022
IMPLEMENTED ON. FEBRUARY 1, 2023
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... 9
4 Designation Expression Method and Classification... 9
5 Order Content... 10
6 Dimensions, Shapes and Weights... 11
7 Technical Requirements... 11
8 Test Methods... 13
9 Inspection Rules... 14
10 Packaging, Marking and Quality Certificate... 15
11 Comparison of Similar Designations in China and Foreign Countries... 15
Appendix A (informative) Reference Values of Chemical Composition (melting
analysis) of Steel... 16
Appendix B (normative) Mechanical Properties of Steel Sheet and Strip (specimen
direction is longitudinal)... 17
Appendix C (informative) Comparison of Similar Designations in China and Foreign
Countries... 18
Bibliography... 19
Continuously Cold Rolled High Strength Steel Sheet and
Strip for Automobile - Part 4.High Strength Low Alloy Steel
1 Scope
This document specifies the classification and designation expression method, order contents,
dimensions, shapes, weights, technical requirements, test methods, inspection rules, packaging,
marking and quality certificate of continuously cold rolled high strength low alloy steel sheet
and strip for automobile.
This document is applicable to continuously cold rolled high strength low alloy steel sheet and
strip (with a thickness not greater than 3.0 mm) mainly used to fabricate structural parts and
reinforcements of automobile (hereinafter referred to as “the steel sheet and strip”).
2 Normative References
The contents of the following documents constitute indispensable clauses of this document
through the normative references in this text. In terms of references with a specified date, only
versions with a specified date are applicable to this document. In terms of references without a
specified date, the latest version (including all the modifications) is applicable to this document.
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 - Chrome 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 223.63 Iron, Steel and Alloy - Determination of Manganese Content - Sodium (potassium)
Periodate Spectrophotometric Method
GB/T 223.64 Iron, Steel and Alloy - Determination of Manganese Content - Flame Atomic
Absorption Spectrometric 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 223.78 Methods for Chemical Analysis of Iron, Steel and Alloy - Curcumin
Spectrophotometric Method for the Determination of Boron 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
Temperature
GB/T 247 General Rule of Acceptance, 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 Samples and Test Pieces for
Mechanical Testing
GB/T 4336 Carbon and Low-alloy Steel - Determination of Multi-element Contents - Spark
Discharge Atomic Emission Spectrometric Method (routine method)
GB/T 5028 Metallic Materials - Sheet and Strip - Determination of Tensile Strain Hardening
Exponent
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 18253-2018 Steel and Steel Products - Types of Inspection Documents
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 20126 Unalloyed Steel - Determination of Low Carbon Content - Part 2.Infrared
Absorption Method after Combustion in an Induction Furnace (with preheating)
j) Purposes;
k) Other special requirements.
5.2 If the dimensions, unevenness accuracy, surface quality level, surface structure type, edge
state and packaging are not specified in the order contract, then, the products in this document
shall be delivered with ordinary dimensions and unevenness accuracy, and a relatively advanced
surface as trimmed steel sheet or strip with a pitted surface structure, and be packed in
accordance with the packaging mode provided by the supply-side.
6 Dimensions, Shapes and Weights
The dimensions, shapes, weights and allowable deviations of the steel sheet and strip shall
comply with the stipulations of GB/T 708.
7 Technical Requirements
7.1 Chemical Composition
The reference values of the chemical composition (melting analysis) of steel are shown in
Appendix A. If the demand-side has requirements for the chemical composition, they shall be
negotiated during ordering.
7.2 Smelting Method
The steel used for the steel sheet and strip shall be smelted by oxygen converter or electric
furnace. Unless it is otherwise specified, the smelting method shall be selected by the supply-
side.
7.3 Delivery State
7.3.1 The steel sheet and strip shall be delivered in a flat state after annealing.
7.3.2 Usually, the steel sheet and strip are delivered with oil. The applied oil film shall be able
to be removed through an alkaline aqueous solution or a common solvent. Under the usual
packaging, transportation, loading and unloading, and storage conditions, the supply-side shall
guarantee that the surface of the steel sheet and strip will not rust within 6 months from the date
of completion of manufacture. If the demand-side requires the products to be delivered without
oil, it shall be negotiated during ordering.
NOTE. for the non-oiled products required by the demand-side, rust may be generated, and
meanwhile, during transportation, loading and unloading, storage and application, the
surface is prone to slight scratches.
7.4 Mechanical Properties
......
GB/T 20564.4-2010
GB
NATIONAL STANDARD OF
THE PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.50
H 46
Continuously cold rolled high strength
steel sheet and strip for automobile –
Part 4. High strength low alloy steel
ISSUED ON. SEPTEMBER 2, 2010
IMPLEMENTED ON. JUNE 1, 2011
Issued by. General Administration of Quality Supervision, Inspection
and Quarantine;
Standardization Administration Committee.
3. No action is required - Full-copy of this standard will be automatically &
immediately delivered to your EMAIL address in 0~60 minutes.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and definitions ... 6
4 Classification and code ... 7
5 Information required by order ... 8
6 Size, shape, weight and tolerance ... 8
7 Technical requirements ... 8
8 Inspection and test ... 10
9 Numerical rounding-off ... 11
10 Packaging, marks and quality certificate ... 11
11 Similar control of designations home and abroad ... 11
Annex A (Informative) Chemical composition reference value ... 12
Annex B (Informative) Similar control of designations home and abroad ... 13
Foreword
GB/T 20564 Continuously cold rolled high strength steel sheet and strip for
automobile consists of 7 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 steels.
This Part is the 4th part of GB/T 20564.
Annex A and Annex B of this Part are informative.
This Part was proposed by China Iron and Steel Industry Association.
This Part shall be under the jurisdiction of National Technical Committee on
Steels of Standardization Administration of China.
The drafting organizations of this Part. Baoshan Iron & Steel Co., Ltd.,
Metallurgical Industry Information Standards Institute, CAPITAL IRON &
STEEL CORP.
Main drafters of this Part. Li Yuguang, Shi Hongyan, Sun Zhongming, Xu
Hongwei, Tu Shulin, Wang Xiaohu, Huang Jinhua, Yu Chengfeng, Qiao
Jianjun, Wang Li, Zhu Xiaodong, Xu Qing.
Continuously cold rolled high strength
steel sheet and strip for automobile -
Part 4. High strength low alloy steel
1 Scope
This Part specifies the dimensions, shape, weight, technical requirements,
test methods, inspection rules, packaging, marks and quality certificate of
cold rolled high strength steel sheet and strip (hereinafter referred to as steel
sheet and strip).
This Part is applicable to steel sheet and strip of thickness not greater than
3.0 mm mainly used for automotive structural parts and reinforcements.
2 Normative references
The following standards contain the provisions which, through reference in
this Part, constitute the provisions of this Part. For dated references,
subsequent amendments (excluding corrections) or revisions do not apply to
this Part. However, the parties who enter into agreement based on this Part
are encouraged to investigate whether the latest versions of these documents
are applicable. For undated reference documents, the latest versions apply to
this Part.
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 aluminium content -
Chrom azurol S photometric method
GB/T 223.13, Methods for chemical analysis of iron, steel and alloy - The
ammonium ferrous sulfate titration method for the determination of
vanadium content
GB/T 223.16, Methods for Chemical Analysis of Iron, Steel and Alloy - The
Chromotropic Acid Photometric Method for the Determination of Titanium
Content
GB/T 223.17, Methods for chemical analysis of iron, steel and alloy - The
diantipyrylmethane photometric method for the determination of titanium
content
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 223.60, Methods for chemical analysis of iron, steel and alloy - The
perchloric acid dehydration gravimetric method for the determination of
silicon content
GB/T 223.63, Methods for chemical analysis of iron, steel and alloy - The
sodium (potassium) periodate photometric method for the determination of
manganese content
GB/T 223.64, Iron, Steel and Alloy - Determination of Manganese Content
- Flame Atomic Absorption Spectrometric Method
GB/T 223.67, Iron, Steel and Alloy - Determination of Sulfur Content -
Methylene Blue Spectrophotometric Method
GB/T 223.68, Methods for Chemical Analysis of Iron, Steel and Alloy - The
Potassium Iodate Titration Method after Combustion in the Pipe Furnace
for the Determination of Sulfur Content
GB/T 223.69, Iron, Steel and Alloy - Determination of Carbon Contents -
Gas-volumetric Method after Combustion in the Pipe Furnace
GB/T 223.71, Methods for Chemical Analysis of Iron, Steel and Alloy the
Gravimetric Method after Combustion in the Pipe Furnace for the
Determination of Carbon Content
GB/T 223.72, Iron, Steel and Alloy - Determination of Sulfur Content -
Gravimetric Method
GB/T 223.75, Iron steel and alloy - Determination of boron content -
Methanol distillation-curcumin photometric 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 223.78, Methods for Chemical Analysis of Iron, Steel and Alloy -
Curcumin Spectrophotometric Method for the Determination of Boron
Content
GB/T 228, Metallic materials - Tensile testing
GB/T 247, General rule of acceptance, package, mark and certification for
steel plates (sheets) and strips
GB/T 708, Dimension, shape, weight, and tolerance for cold-rolled steel
plate
GB/T 2523, Cold rolled sheet (strip) - Measuring method for surface
roughness
GB/T 2975, Steel and Steel Products - Location and Preparation of Test
Pieces for Mechanical Testing
GB/T 4336, Carbon and low-alloy steel - Determination of multi-element
contents - Spark discharge atomic emission spectrometric method (routine
method)
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
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 20126, Unalloyed steel - Determination of low carbon content - Part 2.
Infrared absorption method after combustion in an induction furnace (with
preheating)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1 high strength low alloy steels (LA)
In the low carbon steel, the microalloying elements such as niobium, titanium
and vanadium are added by single or compound, and the carbonitride
particles are precipitated to strengthen, and the grain strength of the
5 Information required by order
5.1 The user shall provide the following information when ordering.
a) product name (steel sheet or strip);
b) reference to this Part;
c) designation;
d) specifications and size, roughness accuracy;
e) surface quality level;
f) surface structure;
g) edge status;
h) packaging method;
i) weight;
j) use;
k) other special requirements.
5.2 If the order contract does not indicate the size and roughness accuracy,
surface quality level, surface structure type, edge status and packaging and
other information, the products of this Standard shall be delivered according
to the trimmed steel sheet and strip of ordinary size and unevenness
accuracy, more advanced finishing surface, pitting surface. The products
shall be packed in the method provided by the supplier.
6 Size, shape, weight and tolerance
The size, shape, weight and tolerance of steel sheet and strip shall comply
with the provisions of GB/T 708.
7 Technical requirements
7.1 Chemical composition
Refer to Annex A for the chemical composition of the steel (smelting analysis).
If the purchaser has chemical composition requirements, it shall be
negotiated when ordering.
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