GB/T 711-2017 (GB/T711-2017, GBT 711-2017, GBT711-2017) & related versions
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GB/T 711-2017
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.50
H 46
Replacing GB/T 711-2008, GB/T 710-2008
Hot-Rolled Quality Carbon
Structural Steel Plates Sheets and Strips
ISSUED ON. FEBRUARY 28, 2017
IMPLEMENTED ON. NOVEMBER 01, 2017
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of PRC.
Table of Contents
Foreword . 3
1 Scope .. 4
2 Normative References . 4
3 Ordering Contents . 6
4 Dimension, Appearance, Weight . 6
5 Technical Requirements .. 6
6 Test Methods . 12
7 Inspection Rules . 13
8 Package, Marking and Quality Certificate .. 14
Foreword
This Standard was drafted as per the rules specified in GB/T 1.1-2009.
This Standard combined and modified the following standards like GB/T 710-2008 Hot-
Rolled Quality Carbon Structural Steel Sheets and Strips, GB/T 711-2008 Hot-rolled
Quality Carbon Structural Steel Plates, Sheets and Wide Strips.
This Standard replaced GB/T 710-2008 Hot-Rolled Quality Carbon Structural Steel
Sheets and Strips, GB/T 711-2008 Hot-rolled Quality Carbon Structural Steel Plates,
Sheets and Wide Strips; compared with GB/T 710-2008 and GB/T 711-2008, this
Standard has the major technical changes as follows.
--- Cancel the relevant brand of boiling steel;
--- Cancel the pull-edge level;
--- Increase three brands of 35Mn, 55Mn, 70Mn (see Table 1, Table 2, Table 3);
--- Tighten the control harmful elemental sulfur in steel (see Table 1);
--- Adjust the delivery status of some brands (see Table 2).
This Standard was proposed by China Iron and Steel Industry Association.
This Standard shall be under the jurisdiction of National Technical Committee for
Standardization of Steel (SAC/TC 183).
Drafting organizations of this Standard. Chongqing Iron & Steel Company Limited,
Angang Steel Company Limited, China Metallurgical Information and Standardization
Institute, Shougang Co., Ltd., Xinyu Iron & Steel Co., Ltd., and Hebei Iron and Steel
Co., Ltd. Tangshan Branch.
Chief drafting staffs of this Standard. Du Dasong, Ye Guohua, Pu Zhimin, Zhang Weixu,
Shi Li, Liao Sangsang, Deng Cuiqing, Xie Caozhong, Guan Jichun, Yang Juanyu, Gao
Yan, Wang Xin, Liu Xuyuan, Su Haolu.
The historical editions replaced by this Standard are as follows.
--- GB/T 710-1998, GB/T 710-1991, GB/T 710-2008;
--- GB/T 711-1985, GB/T 711-1988, GB/T 711-2008.
Hot-Rolled Quality Carbon
Structural Steel Plates Sheets and Strips
1 Scope
This Standard specifies the dimension, appearance, weight, technical requirements,
test methods, inspection rules, package, marking and quality certificate of the hot-
rolled quality carbon structural steel plates sheets and strips.
This Standard is only applicable to the hot-rolled quality carbon structural steel plates
sheets and strips with thickness no greater than 100mm, width no less than 600mm
(hereinafter referred to as steel sheets and strips).
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 223.5 Methods for Chemical Analysis of Iron, Steel and Alloy - The Reduced
Molybdosilicate Spectrophotometric Method for The Determination of Acid-Soluble
Silicon Content
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 223.19 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 Methods for Chemical Analysis of Iron, Steel and Alloy - The
Dimethylglyoxime Spectrophotometric Method for The Determination of Nickel
Content
GB/T 223.37 Methods for Chemical Analysis of Iron, Steel and Alloy - The
Indophenol Blue Photometric Method for the Determination of Nitrogen Content
after Distillation Separation
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 223.64 Iron, Steel and Alloy - Determination of Manganese Content - Flame
Atomic Absorption Spectrometric Method
GB/T 223.68 Methods for Chemical Analysis of Iron Steel and Alloy - The
Combustion Potassium Iodate Volumetric Method for the Determination of Sulfur
Content
GB/T 223.86 Steel and Iron - Determination of Total Carbon Content - Infrared
Absorption Method after Combustion in an Induction Furnace
GB/T 224 Determination of Depth of Decarburization of Steels
GB/T 228.1 Metallic Materials - Tensile Testing - Part 1. Method of Test at Room
Temperature
GB/T 229 Metallic Materials – Charpy Notch Impact Test
GB/T 232 Metallic Materials – Bend Test
GB/T 247 General Rule of Package Mark and Certification for Steel Plates (Sheets)
and Strips
GB/T 709 Dimensions, Shape, Weight and Tolerances for Hot Rolled Steel Sheets
and Strips
GB/T 2970 Thicker Steel Plate - Method for Ultrasonic Inspection
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 6394 Metal - Methods for Estimating the Average Grain Size
GB/T 8170 Rules of Rounding off for Numerical Values & Expression and
Judgement of Limiting Values
GB/T 13298 Inspection Methods of Microstructure for Metals
GB/T 13299 Steel – Determination of Microstructure
half thickness tolerance of steel plate and strip; the allowable minimum thickness of
steel plate and strip must be guaranteed.
5.10.3 The local defects on the surface of the steel plate and strip are allowed to be
cleaned; while the clean-up area shall be smooth and edge-free; the allowable
minimum thickness of steel plate and strip must be guaranteed.
5.10.4 During the continuous production of steel strips, local surface defects are not
easily found and removed; so, delivery with defects is allowed; however, the defective
part shall not exceed 6% total length of each roll of steel strip.
5.10.5 Steel plate with thickness greater than 30mm is allowed for flame trimming;
however, the steel plate requires the heat treatment shall take flame trimming before
heat treatment.
5.10.6 The surface quality characteristics of each level of steel strip and shear steel
plates shall conform to the provisions of Table 6.
Table 6 -- Surface Quality Characteristics of Each Level of Steel Plate and Strip
Levels and
codes
Applicable surface
treatment modes Characteristics
Ordinary
surface (FA)
Rolled surface
Pickled surface
The surface is allowed to have pits, concaves, scratches,
and other slight and local defects of which the thickness (or
height) shall not exceed half thickness tolerance of the steel
strip; however, the allowable minimum thickness of steel
plate and strip must be guaranteed; the following local
defects are also allowed to have such as serrated edges,
partially uncut edges, lack of pickling, parking spots, etc.
Higher surface
(FB) Pickled surface
The surface is not allowed to have the local defects that may
influence the formability, such as slight scratches, slight
indentations, slight pits, slight roll marks, chromatic
aberration, etc.; the surface is allowed to have slight parking
spots after oiling; however, the surface is not allowed to have
the lack of or over pickling defects.
6 Test Methods
6.1 The analysis method for chemical compositions of steel shall be performed as
per the provisions of GB/T 223.5, GB/T 223.12, GB/T 223.19, GB/T 223.23, GB/T
223.37, GB/T 223.59, GB/T 223.64, GB/T 223.68, GB/T 223.86, GB/T 4336, GB/T
20123, GB/T 20125, and general method; however, the arbitration shall be performed
as per the provisions of GB/T 223.5, GB/T 223.12, GB/T 223.19, GB/T 223.23, GB/T
223.37, GB/T 223.59, GB/T 223.64, GB/T 223.68, GB/T 223.86.
......
GB/T 711-2008
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.50
H 46
Replacing GB/T 711-1988
Hot-rolled Quality Carbon Structural Steel
Plates, Sheets and Wide Strips
ISSUED ON. OCTOBER 10, 2008
IMPLEMENTED ON. MAY 1, 2009
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People’s Republic of China;
Standardization Administration of the People's Republic of China
(SAC).
Table of Contents
Foreword ... 3
1. Scope ... 4
2. Normative references ... 4
3. Order content ... 7
4. Dimension, shape, weight and allowable deviation ... 7
5. Technical requirements ... 7
6. Test method ... 12
7. Inspection rules ... 13
8. packaging, marking and quality certificate ... 13
9. Rounding-off of numerical value ... 13
Foreword
This Standard replaces GB/T 711-1988 "Hot-rolled Quality Carbon Structural Steel
Plates, Sheets and Wide Strips".
Compared with GB/T 711-1988, the main changes in this standard are as follows.
- Change the provisions on delivery state;
- The sulfur content is reduced by 0.005%;
- The impact test is changed from transverse direction to longitudinal direction;
and the impact absorbed energy value is increased;
- The inspection batch weight is increased to 60t.
This Standard was proposed by China Iron & Steel Association.
This Standard shall be under jurisdiction of China Steel Standardization Technical
Committee.
Chief drafting organizations of this Standard. Chongqing Iron & Steel Company
Limited, Tianjin Iron & Steel Co., Ltd., Shougang Corporation, Angang Steel Company
Limited, and China Metallurgical Information And Standardization Research Institute.
Chief drafting staffs of this Standard. Zhu Bin, Zeng Xiaoping, Yuan Jianhua, Li
Shuqing, Du Dasong, Shi Li, Guan Jichun, Su Yan, and Wang Xiaohu.
The previous versions replace by this Standard are as follows.
- GB/T 711-1985, and GB/T 711-1988.
Hot-rolled Quality Carbon Structural Steel Plates,
Sheets and Wide Strips
1. Scope
This Standard specifies the dimension, shape, weight, allowable deviation, technical
requirements, test method, test rules, packing, mark, and quality certificate of
hot-rolled quality carbon structural steel plates, sheets and wide strips.
This Standard is applicable to the hot-rolled quality carbon structural steel plates,
sheets and wide strips of which the thickness is 3mm~60mm and the width is not less
than 600mm.
2. Normative references
The following standards contain provisions which, through reference in this text,
constitute provisions of this Standard. For dated reference, the subsequent
amendments (excluding corrigendum) or revisions of these publications do not apply.
However, the parties who enter into agreement based on this Standard are
encouraged to study whether the latest editions of these references are applicable.
For undated references, the latest edition of the normative document is applicable to
this Standard.
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 Aluminum 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 223.59 "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 Me 223.64thod"
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 222 "Permissible Tolerances for Chemical Composition of Steel Products"
GB/T 224 "Determination of Depth of Decarburization of Steels"
GB/T 226 "Etch Test for Macrostructure and Defect of Steels"
GB/T 228 "Metallic Materials - Tensile Testing at Ambient Temperature" (GB/T
228-2002.eqv ISO 6892. 1998)
GB/T 229 "Metallic Materials - Charpy Pendulum Impact Test Method" (GB/T
229-2007, ISO 148.2006, MOD)
GB/T 232 "Metallic Materials - Bend Test" (GB/T 232-1999, eqv ISO 7438.1985)
GB/T 247 “General Rule of Acceptance, Package, Mark and Certification for Steel
Plates, Sheets and Strips”
GB/T 709 “Dimension, Shape, Weight and Tolerances for Hot Rolled Sheets and
Plates”
GB/T 2970 “Thicker Steel Plates - Method for Ultrasonic Inspection”
GB/T 2975 "Steel and Steel Products - Location and Preparation of Test Pieces for
Mechanical Testing" (GB/T 2975-1998, eqv 377. 1997)
GB/T 4336 "Standard Test Method for Spark Discharge Atomic Emission
Spectrometric Analysis of Carbon and Low-alloy Steel (routine Method)"
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)
GB/T 20125 "Low-alloy Steel - Determination of Multi-element Contents -
Inductively Coupled Plasma Atomic Emission Spectrometric Method"
YB/T 081 "Rule for Rounding off of Numerical Values and Judgment of Testing
Values for Technical Standards of Metallurgy"
5.4 Mechanical property
5.4.1 Mechanical property of steel plates (sheets) and steel strips shall comply with
requirements in Table 2. Each property of 08Al steel shall comply with requirements of
08 steel plates (sheets) and steel strips; cold bending experiment of No. 08~35 steel
shall comply with requirements in Table 3, if the quality can be guaranteed by the
supplier, test may be exempted.
5.4.1.1 For steel plate delivered in the heat treatment condition, if the elongation rate
is increased more than 2% (absolute value) of Table 2, tensile strength is allowed to
be lowered by 40N/mm2 than the provisions in Table 2.
5.4.1.2 When the thickness of steel plates (sheets) and steel strips is greater than
20mm, if the thickness incremented by 1mm, then the elongation rate can be reduced
by 0.25% (absolute value); if the thickness ≤32mm, total reduced value shall not be
greater than 2% (absolute value); if the thickness >32mm, total reduced value shall
not be greater than 3% (absolute value).
5.4.2 If both parties agree, 20°C or -20°C low-temperature impact test can be
proceeded on steel products whose thickness is not less than 6mm; the impact force
of 10, 15 and 20 steel plate shall comply with requirements in Table 4; test
temperature shall be indicated in the contract. Test temperature and impact
absorpti...
......
| Standard ID | GB/T 711-2017 (GB/T711-2017) | | Description (Translated English) | Hot-rolled quality carbon structural steel plates sheets and strips | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H46 | | Classification of International Standard | 77.140.50 | | Word Count Estimation | 9,936 | | Date of Issue | 2017-02-28 | | Date of Implementation | 2017-11-01 | | Older Standard (superseded by this standard) | GB/T 710-2008; GB/T 711-2008 | | Quoted Standard | GB/T 222; GB/T 223.5; GB/T 223.12; GB/T 223.19; GB/T 223.23; GB/T 223.37; GB/T 223.59; GB/T 223.64; GB/T 223.68; GB/T 223.86; GB/T 224; GB/T 228.1; GB/T 229; GB/T 232; GB/T 247; GB/T 709; GB/T 2970; GB/T 2975; GB/T 4336; GB/T 6394; GB/T 8170; GB/T 13298 | | Drafting Organization | Chongqing Iron and Steel Co., Ltd., Anshan Iron and Steel Co., Ltd., Metallurgical Industry Information Standards Institute, Shougang Corporation, Xinyu Iron and Steel Co., Ltd., Hebei Iron and Steel Co., Ltd. Tangshan Branch | | Administrative Organization | National Steel Standardization Technical Committee (SAC/TC 183) | | Regulation (derived from) | National Standard Announcement No. 4 of 2017 | | Proposing organization | China Iron and Steel Industry Association | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China, China National Standardization Administration Committee | | Summary | This standard specifies the quality, shape, weight, technical requirements, test methods, inspection rules, packaging, marking and quality certificates of hot rolled steel sheets and stripes for high quality carbon structural steels. This standard applies to the thickness of not more than 100 mm, the width of not less than 600 mm high-quality carbon structural steel hot-rolled steel and steel (hereinafter referred to as steel and steel). | | Standard ID | GB/T 711-2008 (GB/T711-2008) | | Description (Translated English) | Hot-rolled quality carbon structural steel plates, sheets and wide strips | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H46 | | Classification of International Standard | 77.140.50 | | Word Count Estimation | 9,956 | | Date of Issue | 2008-10-10 | | Date of Implementation | 2009-05-01 | | Older Standard (superseded by this standard) | GB/T 711-1988 | | Quoted Standard | GB/T 222; GB/T 223.3; GB/T 223.5; GB/T 223.9; GB/T 223.11; GB/T 223.12; GB/T 223.18; GB/T 223.19; GB/T 223.23; GB/T 223.36; GB/T 223.37; GB/T 223.59; GB/T 223.60; GB/T 223.61; GB/T 223.62; GB/T 223.63; GB/T 223.64; GB/T 223.67; GB/T 223.68; GB/T 223.69; GB/T 224; GB/T 226; GB/T 228; GB/T 229; GB/T 232; GB/T 247; GB/T 709; GB/T 2970; GB/T 2975; GB/T 4336; GB/T 17505; GB/T 20066; GB/T 20123; GB/T 20125; YB/T 081 | | Drafting Organization | Chongqing Iron & Steel Co., Ltd. | | Administrative Organization | National Steel Standardization Technical Committee | | Regulation (derived from) | National Standard Approval Announcement 2008 No.17 (Total No.130) | | 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 size of high-quality carbon structural steel plates and sheets, shape, weight and tolerance, technical requirements, test methods, inspection rules, packaging, marking and quality certificate. This standard applies to a thickness of 3mm ~ 60mm, width of not less than 600mm of high-quality carbon structural steel sheets and strips. | | Standard ID | GB/T 711-1988 (GB/T711-1988) | | Description (Translated English) | Hot-rolled quality carbon structural steel plates and wide strips | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H46 | | Classification of International Standard | 77.140 | | Word Count Estimation | 5,584 | | Date of Issue | 1988/2/29 | | Date of Implementation | 1989/7/1 | | Older Standard (superseded by this standard) | GB 711-1985 | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 17 of 2008 (No. 130 overall) | | Issuing agency(ies) | National Bureau of Standards |
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