Continuously cold rolled high strength steel sheet and strip for automobile —Part 11: Carbon manganese steel
1 Scope
This standard specifies the terms and definitions, classification and steel grade representation methods, order details, dimension, shape, weight, technical requirements, test methods, inspection rules, packaging, marking, and product quality certificate of cold-rolled carbon manganese high strength steel sheet and strip.
This part is applicable to the manufacture of automotive structural parts with a thickness of 0.50 mm ~ 3.00 mm steel sheet and strip (hereinafter referred to as “steel sheet and strip”).
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 223.9 Iron, steel and alloy — Determination of aluminum content — Chrome azurol S photometric 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 Methods for chemical analysis of iron, steel and alloy — The sodium (potassium) periodate photometric method for the determination of manganese content
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 228.1-2010 Metallic materials — Tensile testing — Part 1: Method of test at room temperature
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 and peak count for cold-rolled metal sheet (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 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 standard, the following terms and definitions apply.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Classification and steel grade representation methods
5 Order contents
6 Dimension, shape and weight
7 Technical requirements
8 Test methods
9 Inspection rules
10 Package, marking and quality certificate
Annex A (Informative) Chemical composition of steel
Annex B (Informative) Approximate comparisons of domestic and foreign steel grades
Continuously cold rolled high strength steel sheet and strip for automobile —Part 11: Carbon manganese steel
1 Scope
This standard specifies the terms and definitions, classification and steel grade representation methods, order details, dimension, shape, weight, technical requirements, test methods, inspection rules, packaging, marking, and product quality certificate of cold-rolled carbon manganese high strength steel sheet and strip.
This part is applicable to the manufacture of automotive structural parts with a thickness of 0.50 mm ~ 3.00 mm steel sheet and strip (hereinafter referred to as “steel sheet and strip”).
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 223.9 Iron, steel and alloy — Determination of aluminum content — Chrome azurol S photometric 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 Methods for chemical analysis of iron, steel and alloy — The sodium (potassium) periodate photometric method for the determination of manganese content
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 228.1-2010 Metallic materials — Tensile testing — Part 1: Method of test at room temperature
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 and peak count for cold-rolled metal sheet (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 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 standard, the following terms and definitions apply.
Contents of GB/T 20564.11-2017
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Classification and steel grade representation methods
5 Order contents
6 Dimension, shape and weight
7 Technical requirements
8 Test methods
9 Inspection rules
10 Package, marking and quality certificate
Annex A (Informative) Chemical composition of steel
Annex B (Informative) Approximate comparisons of domestic and foreign steel grades
