GB/T 20564.9-2016 English PDF (GB/T20564.9-2016)

GB/T 20564.9-2016: Continuously Cold Rolled High Strength Steel Sheet and Strip for Automobile - Part 9: Quenching and Partitioning Steel
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GB/T 20564.9-2016
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 9. Quenching and Partitioning Steel
ISSUED ON. OCTOBER 13, 2016
IMPLEMENTED ON. SEPTEMBER 1, 2017
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of PRC.
3. No action is required - Full-copy of this standard will be automatically and
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 ... 6
5 Ordering Contents ... 7
6 Dimension, Shape and Weight ... 8
7 Technical Requirements ... 8
8 Test Methods ... 10
9 Inspection Rules ... 10
10 Package, Marking and Quality Certificate ... 11
Appendix A (Informative) Reference Value of Chemical Compositions ... 12
Foreword
GB/T 20564 Continuously Cold Rolled High Strength Steel Sheet and Strip can be
divided into the following 11 parts.
--- Part 1. Brake 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.
This Part belongs to Part 9 of GB/T 20564.
This Part was drafted as per the rules specified in GB/T 1.1-2009.
This Part was proposed by China Iron and Steel Association.
This Part shall be under the jurisdiction of National Technical Committee for
Standardization of Steel (SAC/TC 183).
Drafting organizations of this Part. Angang Steel Co., Ltd., China Metallurgical
Information and Standardization Institute, Shougang Corporation, and Hebei Iron and
Steel Co., Ltd. Tangshan Branch.
Chief drafting staffs of this Part. Wang Xu, Su Haolu, Zhang Weixu, Tang Mu, Deng
Cuiqing, Wang Keqiang, Kuang Shuang, Liu Rendong, Huang Qiuju.
Continuously Cold Rolled High Strength
Steel Sheet and Strip for Automobile –
Part 9. Quenching and Partitioning Steel
1 Scope
This Part of GB/T 20564 specifies the terms and definitions, classification and code,
ordering content, dimension, shape, weight, technical requirements, test method,
inspection rules, package, marking and quality certificate of cold rolled quenching and
partitioning high strength steel sheet and strip (hereinafter referred to as steel sheet
and strip).
This Part is applicable to the steel sheet and strip with thickness of 0.8mm ~ 2.5mm
for manufacturing automotive structural parts and reinforcement parts.
2 Normative References
The following documents are essential to the application of 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) are applicable to this document.
GB/T 222 Permissible Tolerances for Chemical Composition of Steel Products
GB/T 223.4 Iron, Steel and Alloy - Determination of Manganese Content -
Potentiometric or Visual Titration Method
GB/T 223.8 Methods for Chemical Analysis of Iron, Steel and Alloy – The Sodium
Fluoride Separation – EDTA Volumetric Method for the Determination of Aluminum
Content
GB/T 223.9 Iron, Steel and Alloy - Determination of Aluminium Content - Chrome
Azurol S Photometric Method
GB/T 223.11 Iron, Steel and Alloy - Determination of Chromium Content - Visual
Titration or Potentiometric Titration Method
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 223.40 Iron, Steel and Alloy - Determination of Niobium Content by the
Sulphochlorophenol S 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 223.59 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 pf Iron, Steel ad 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 223.67 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 228.1-2010 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
Sheet and Strip
GB/T 708 Dimension, Shape, Weight, and Tolerance for Cold-Rolled Steel Plate
GB/T 2523 Measuring Method of Surface Roughness and Peak Count for Cold-
Rolled Metal Sheet (Strip)
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 and 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
3 Terms and Definitions
The following terms and definitions are applicable to this document.
3.1 Quenching and partitioning steel. QP
The microstructure of steel is martensite, retained austenite and ferrite. During the
forming process, the remained austenite can perform phase-transformation into
martensite; and have higher work hardening rate, uniform elongation and tensile
strength. Compared with the dual phase steel with the equivalent tensile strength, it
has higher elongation; compared with the phase-transformation-induced plastic steel
with equivalent tensile strength, it has lower carbon equivalent.
4 Classification and Code
4.1 The grade of steel sheet and strip consists of three parts, namely, initials “CR” of
“Cold Rolled”, specified minimum yield strength value/specified minimum tensile
strength value, and initials “QP” of “Quenching and Partitioning”.
Example. CR550/980QP
CR – initials of “Cold Rolled”;
550/980 – 550. specified minimum yield strength value, in MPa; 980. specified minimum tensile
strength value, in MPa;
QP – Initials of “Quenching and Partitioning”.
GB/T 20564.9-2016
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 9. Quenching and Partitioning Steel
ISSUED ON. OCTOBER 13, 2016
IMPLEMENTED ON. SEPTEMBER 1, 2017
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of PRC.
3. No action is required - Full-copy of this standard will be automatically and
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 ... 6
5 Ordering Contents ... 7
6 Dimension, Shape and Weight ... 8
7 Technical Requirements ... 8
8 Test Methods ... 10
9 Inspection Rules ... 10
10 Package, Marking and Quality Certificate ... 11
Appendix A (Informative) Reference Value of Chemical Compositions ... 12
Foreword
GB/T 20564 Continuously Cold Rolled High Strength Steel Sheet and Strip can be
divided into the following 11 parts.
--- Part 1. Brake 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.
This Part belongs to Part 9 of GB/T 20564.
This Part was drafted as per the rules specified in GB/T 1.1-2009.
This Part was proposed by China Iron and Steel Association.
This Part shall be under the jurisdiction of National Technical Committee for
Standardization of Steel (SAC/TC 183).
Drafting organizations of this Part. Angang Steel Co., Ltd., China Metallurgical
Information and Standardization Institute, Shougang Corporation, and Hebei Iron and
Steel Co., Ltd. Tangshan Branch.
Chief drafting staffs of this Part. Wang Xu, Su Haolu, Zhang Weixu, Tang Mu, Deng
Cuiqing, Wang Keqiang, Kuang Shuang, Liu Rendong, Huang Qiuju.
Continuously Cold Rolled High Strength
Steel Sheet and Strip for Automobile –
Part 9. Quenching and Partitioning Steel
1 Scope
This Part of GB/T 20564 specifies the terms and definitions, classification and code,
ordering content, dimension, shape, weight, technical requirements, test method,
inspection rules, package, marking and quality certificate of cold rolled quenching and
partitioning high strength steel sheet and strip (hereinafter referred to as steel sheet
and strip).
This Part is applicable to the steel sheet and strip with thickness of 0.8mm ~ 2.5mm
for manufacturing automotive structural parts and reinforcement parts.
2 Normative References
The following documents are essential to the application of 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) are applicable to this document.
GB/T 222 Permissible Tolerances for Chemical Composition of Steel Products
GB/T 223.4 Iron, Steel and Alloy - Determination of Manganese Content -
Potentiometric or Visual Titration Method
GB/T 223.8 Methods for Chemical Analysis of Iron, Steel and Alloy – The Sodium
Fluoride Separation – EDTA Volumetric Method for the Determination of Aluminum
Content
GB/T 223.9 Iron, Steel and Alloy - Determination of Aluminium Content - Chrome
Azurol S Photometric Method
GB/T 223.11 Iron, Steel and Alloy - Determination of Chromium Content - Visual
Titration or Potentiometric Titration Method
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 223.40 Iron, Steel and Alloy - Determination of Niobium Content by the
Sulphochlorophenol S 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 223.59 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 pf Iron, Steel ad 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 223.67 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 228.1-2010 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
Sheet and Strip
GB/T 708 Dimension, Shape, Weight, and Tolerance for Cold-Rolled Steel Plate
GB/T 2523 Measuring Method of Surface Roughness and Peak Count for Cold-
Rolled Metal Sheet (Strip)
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 and 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...