GB/T 710-2008Hot-rolled quality carbon structural steel sheets and strips (English PDF)

Foreword

This Standard replaces "Hot-rolled Quality Carbon Structural Steel Sheets and Strips"

(GB/T 710-1991).

Compared with GB/T 710-1991, main changes in this Standard are as follows.

- ADD order content about hot-rolled steel sheet and strip;

- CANCEL designation of rimmed steel series;

- ADJUST tensile performance indexes;

- IMPROVE deepest drawing grade and grain size grade of deep drawing grade;

- ADJUST thickness scope indexes of cupping test;

- ADD thickness requirements of cold bending test;

- MODIFY requirements on re-inspection.

This Standard was proposed by China Iron and Steel Association.

This Standard is under the jurisdiction of the National Technical Committee on Iron and

Steel of Standardization Administration of China.

Drafting organizations of this Standard. Hunan Valin Lianyuan Steel Co., Ltd., Jigang

Group Co., Ltd., Shougang Group and Metallurgical Information and Standardization

Institute.

Main drafters of this Standard. Zhou Jian, Wu Guangliang, Gao Ling, Shi Li, Wang

Xiaohu, Li Xiaoshao and He Shuzhi.

The previous editions of the standard replaced by this Standard are as follows.

- GB/T 710-1988 and GB/T 710-1991.

Hot-rolled Quality Carbon Structural Steel Sheets and Strips

1 Scope

This Standard specifies classification, order content, size, shape, permissible deviation,

technical requirement, test method, inspection rule, packaging, marking and inspection

certificate of hot-rolled quality carbon structural steel sheets and strips.

This Standard is applicable to hot-rolled quality carbon structural steel sheets and

strips (hereinafter referred to as steel sheets and strips) with thickness less than 3mm

and width not less than 600mm.

2 Normative References

The provisions in following documents become the provisions of this Standard through

reference in this Standard. For dated references, the subsequent amendments

(excluding corrigendum) or revisions do not apply to this Standard, however, parties

who reach an agreement based on this Standard are encouraged to study if the latest

versions of these documents are applicable. For undated references, the latest edition

of the referenced document applies.

GB/T 222 Permissible Tolerances for Chemical Composition of Steel Products

GB/T 223.3 Methods for Chemical Analysis of Iron, Steel and Alloy - The

Diantipyrylmethane Phosphomolybdate Gravimetric Method for the Determination

of Phosphorus Content

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 223.11 Iron Steel and Alloy - Determination of Chromium Content - Visual

Titration or Potentiometric Titration Method

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 223.18 Methods for Chemical Analysis of Iron, Steel and Alloy - The Sodium

Thiosulfate Separation Iodimetric Method for the Determination of Copper Content

GB/T 223.19 Methods for Chemical Analysis of Iron, Steel and Alloy - The

Neocuproine-chloroform Extraction Photometric Method for the Determination of

Copper Content

GB/T 223.23 Iron Steel and Alloy - Determination of Nickel Content - The

Dimethylglyoxime Spectrophotometric Method

GB/T 223.36 Methods for Chemical Analysis of Iron, Steel and Alloy - The Neutral

Titration Method for the Determination of Nitrogen Content after Distillation

Separation

GB/T 223.37 Methods for Chemical Analysis of Iron, Steel and Alloy - The

Indophenal Blue Photometric Methods for the Determination of Nitrogen Content

after Distillation Separation

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 Methods for Chemical Analysis of Iron, Steel and Alloy - The Flame

Atomic Absorption Spectrophotometric Method for the Determination of Nickel

Content

GB/T 223.58 Methods for Chemical Analysis of Iron, Steel and Alloy - The Sodium

Arsenite-sodium Nitrite Titrimetric Method for the Determination of Manganese

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 of Iron, Steel and Alloy - The

Perchloric Acid Dehydration Gravimetric Method for the Determination of Silicon

Content

GB/T 223.61 Methods for Chemical Analysis of Iron, Steel and Alloy - The

Ammonium Phosphomolybdate Volumetric Method for the Determination of

Phosphorus Content

GB/T 223.62 Methods for Chemical Analysis of Iron, Steel and Alloy - The Butyl

Acetate Extraction Photometric Method for the Determination of Phosphorus

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 Alloyed - Determination of Manganese Content -

Flame Atomic Absorption Spectrometric Method

GB/T 223.67 Steel and Alloys - Sulfur Content Method for Determination of

Methylene Blue

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 224 Determination of Depth of Decarburization of Steel

GB/T 228 Metallic Materials - Tensile Testing at Ambient Temperature (GB/T 228-

2002, eqv ISO 6892. 1998)

GB/T 232 Metallic Materials - Bend Test (GB/T 232-1999, eqv ISO 7438. 1985)

GB/T 247 General Rule of Package Mark and Certification for Steel Plates (Sheets)

and Strips

GB/T 709 Dimension Shape Weight and Tolerances for Hot-rolled Steel Plates and

Sheets

GB/T 2975 Steel and Steel Products - Location and Preparation of Test Pieces for

Mechanical Testing (GB/T 2975-1998, eqv ISO 377. 1997)

GB/T 4156 Metallic Materials - Sheet and Strip - Erichsen Cupping Test (GB/T

4156-2007, ISO 20482. 2003, IDT)

GB/T 4336 Standard Test Method for Spark Discharge Atomic Emission

Spectrometric Analysis of Carbon and Low-alloy Steel (Routine Method)

GB/T 6394 Metal-methods for Estimating the Average Grain Size

GB/T 13299 Steel - Determination of Microstructure

GB/T 17505 Steel and Steel Products - General Technical Delivery Requirements

(GB/T 17505-1998, eqv ISO 404.1992)

GB/T 20066 Steel and Iron Sampling and Preparation of Samples for the

Determination of Chemical Composition (GB/T 20066-2006, ISO 14284.1996, IDT)

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 20123-2006, ISO 15350.2000, IDT)

YB/T 081 Rule for Rounding Off of Numerical Values and Judgment of Testing

Values for Technical Standards of Metallurgy

3 Classification and Code

According to drawing grade, steel sheet and strip is divided into three grades.

- Deepest drawing grade (Z);

- Deep drawing grade (S);

- Common drawing grade (P).

4 Order Content