GB/T 713.2-2023 PDF English
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GB/T 713.2-2023: Steel plate, sheet and strip for pressure equipment - Part 2: Non-alloy and alloy steel with specified temperature properties
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GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.50
CCS H 46
Replacing GB/T 713-2014 and GB/T 35012-2018
Steel plate, sheet and strip for pressure equipments - Part 2.
Non-alloy and alloy steel with specified temperature
properties
Issued on. AUGUST 06, 2023
Implemented on. MARCH 01, 2024
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... 10
4 Designation representation... 10
5 Order content... 10
6 Size, shape, weight... 10
7 Technical requirements... 11
8 Test methods... 17
9 Inspection rules... 18
10 Packaging, marking and quality certificate... 19
Appendix A (Informative) Comparison table of similar designations between this
document and relevant foreign standards... 20
Appendix B (Normative) Chromium-molybdenum alloy steel plate for hydrogen
service... 21
Appendix C (Normative) Hydrogen-induced cracking (HIC) resistance test and
evaluation methods... 23
Foreword
This document was drafted in accordance with the rules provided in GB/T 1.1-2020
Directives for standardization - Part 1.Rules for the structure and drafting of
standardizing documents.
This document is Part 2 of GB/T 713, Steel plate, sheet and strip for pressure
equipments. The following parts have been issued for GB/T 713.
-- Part 1.General requirements;
-- Part 2.Non-alloy and alloy steel with specified temperature properties;
-- Part 3.Low alloy steel with specified low temperature properties;
-- Part 4.Nickel-alloy steels with specified low temperature properties;
-- Part 5.High manganese steel with specified low temperature properties;
-- Part 6.Quenched and tempered high strength steel;
-- Part 7.Stainless steel and heat resisting steel.
This document replaces GB/T 713-2014, Steel plates for boilers and pressure vessels
and GB/T 35012-2018, Chromium molybdenum alloy steel plate for hydrogen service
equipment. This document is based on GB/T 713-2014 and integrates the contents of
GB/T 35012-2018.Compared with GB/T 713-2014, in addition to structural
adjustments and editorial changes, the main technical changes of this document are as
follows.
a) Add Q460R and related technical requirements (see Table 1, Table 2, and Table
3);
b) Add technical requirements for high temperature mechanical properties of Q420R
(see Table 3);
c) Add technical requirements for yield strength at test temperatures of 100 °C and
150 °C in high-temperature mechanical properties (see Table 3);
d) Add restrictions on the total amount of residual elements and microalloy elements
in steel (see 7.1.6);
e) Change the impact absorption energy of each designation (see Table 2; Table 2 of
GB/T 713-2014);
f) Add hydrogen-induced cracking (HIC) resistance test and evaluation (see
Appendix C);
g) Change the relevant content of GB/T 35012-2018 and include it in the appendix
(see Appendix B).
Please note that some of the contents of this document may involve patents. The issuing
organization of this document is not responsible for identifying patents.
This document was proposed by China Iron and Steel Industry Association.
This document shall be under the jurisdiction of National Technical Committee on Iron
and Steel of Standardization Administration of China (SAC/TC 183).
Drafting organizations of this document. Baoshan Iron and Steel Co., Ltd., China
Metallurgical Information and Standardization Institute, Wuyang Iron and Steel Co.,
Ltd., Xinyu Iron & Steel Co., Ltd., Xiangtan Iron & Steel Co., Ltd of Hunan Valin,
Angang Steel Company Limited, Hebei Puyang Iron and Steel Co., Ltd., Shougang
Group Co., Ltd., Hefei General Machinery Research Institute Co., Ltd., Sinopec
Guangzhou Engineering Co., Ltd., Sinopec Engineering Incorporation, Hubei
University of Automotive Technology.
Main drafters of this document. Wang Xianjun, Li Shurui, Zhang Weixu, Li Jianchao,
Liu Xiaolin, Luo Deng, Pu Zhimin, Wang Zhicong, Qin Liye, Zhang Xiaohu, Zhang
Guoxin, Wang Jinguang, Ding Qingfeng, Liu Wenbin, Huang Jinhua, Sun Menghan,
Wu Yanyang, Yang Fan, Zhang Jimou, Guan Jichun, Chen Kexiao, Zou Yang, Wei Haili.
The previous versions of the documents which are replaced by this document are as
follows.
-- GB/T 713, released in 1963, revised for the first time in 1972, revised for the
second time in 1986, revised for the third time in 1997, merged into GB 6654-
1996 Steel plates for pressure vessels in the fourth revision in 2008, and revised
for the fifth time in 2014;
-- GB/T 35012, first released in 2018.
1 Scope
This document specifies the designation representation, order content, size, shape,
weight, technical requirements, test methods, inspection rules, packaging, marking and
quality certificates of non-alloy steel and alloy steel plates and strips with specified
temperature properties for pressure equipment.
This document is applicable to the manufacture of steel strips and coil-cut steel plates
with a temperature of no less than -20 °C and a thickness of no more than 25.4 mm for
pressure equipment and single-rolled steel plates (hereinafter referred to as steel plates)
with a thickness of 3 mm ~ 250 mm.
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
version corresponding to that date is applicable to this document; for undated references,
the latest version (including all amendments) is applicable to this document.
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 223.9, 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 223.14, Methods for chemical analysis of iron, steel and alloy - The N-benzoy-
N-phenylhydroxylamine extraction photometric method for the determination of
vanadium 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 223.18, Methods for chemical analysis of iron steel and alloy - The sodium
thiosulfate separation iodimetric method for the determination of cupper 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
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 713.1 apply.
4 Designation representation
The designation of carbon steel and low-alloy high-strength steel is represented by the
yield strength value, the first letter of the Chinese Pinyin of the word “Qu” (yield) and
the first letter of the Chinese Pinyin of the word “Rong” (vessel) of the pressure vessel,
for example. Q345R.
5 Order content
The order content of steel plates shall comply with the regulations of GB/T 713.1.
6 Size, shape, weight
The size, shape, and weight of steel plates shall comply with the regulations of GB/T
713.1.
7 Technical requirements
7.1 Designation and chemical composition
7.1.1 The designation and chemical composition (melting analysis) of steels shall
comply with the requirements in Table 1.
7.1.2 For Q345R and Q370R steel plates with a thickness greater than 60 mm, the upper
limit of carbon content can be increased to 0.22% and 0.20% respectively; for Q245R
steel plates with a thickness greater than 60 mm, the upper limit of manganese content
can be increased to 1.20%.
7.1.3 Trace amounts of niobium, vanadium and titanium can be added to Q245R,
Q345R and Q370R steels, and their contents shall be stated in the quality certificate.
The total content of the above three elements shall not exceed 0.050%, 0.120% and
0.150% respectively.
7.1.4 According to the requirements of the buyer, the nitrogen content of Q420R and
Q460R steel plates shall not exceed 0.020% and 0.025% respectively.
7.1.5 According to the requirements of the buyer, an appropriate amount of rare earth
elements can be added to 07Cr2AlMoR steel.
7.1.9 See Appendix A for a comparison of similar designations between this document
and relevant foreign standards.
7.2 Manufacturing method
The manufacturing method of steel shall comply with the regulations of GB/T 713.1.
7.3 Delivery state
7.3.1 The delivery state of steel plates and steel strips shall be as specified in Table 2.
7.4 Mechanical and technological properties
7.4.1 The general requirements for various mechanical and technological properties of
steel plates shall comply with the provisions of GB/T 713.1.
7.4.2 The results of the tensile test, Charpy (V-notch) impact test and bending test of
steel plates shall comply with the requirements in Table 2.
7.4.3 For steel plates with a thickness greater than 60 mm, the bending test may not be
required upon agreement between the supplier and the buyer and as stated in the
contract.
7.4.7 According to the requirements of the buyer, the thickness direction tensile test can
be carried out, and the technical requirements shall be noted in the contract.
7.4.8 According to the requirements of the buyer, a drop weight test can be carried out,
and the technical requirements shall be noted in the contract.
7.5 Hydrogen-induced cracking resistance test
According to the requirements of the buyer, additional technical requirements for non-
alloy steel and alloy steel used for hydrogen-induced cracking (HIC) resistance may be
specified. The specific requirements shall comply with the provisions of Appendix C,
and the qualification level shall be indicated in the contract.
7.7 Surface quality
The surface quality of steel plates and steel strips shall comply with the regulations of
GB/T 713.1.
7.8 Other additional requirements
According to the requirements of the buyer, additional technical requirements for
chromium-molybdenum steel plates for hydrogen service may be specified upon
agreement between the supplier and the buyer and being noted in the contract.
8 Test methods
8.1 The chemical composition test of steel is generally carried out in accordance with
GB/T 4336, GB/T 20123, GB/T 20124, GB/T 20125 or other general methods.
8.2 The test methods for the inspection items of each batch of steel plates shall comply
with the provisions of Table 4.
9 Inspection rules
9.1 Inspection and acceptance
The inspection of steel plates shall be carried out by the supplier’s quality inspection
department.
9.2 Batch rules
9.2.1 Steel plates shall be accepted in batches. Each batch of steel plates is composed
of steel plates of the same designation, the same heat number, the same thickness, the
same rolling, and the same heat treatment system.
9.3 Sampling rules
9.3.1 The sampling location for mechanical property testing shall be in accordance with
the provisions of GB/T 2975.For steel plates with a thickness greater than 40 mm, the
axis of the impact sample shall be located at 1/4 of the thickness.
9.3.2 The sampling quantity, sampling direction and sampling method of each batch of
steel plates shall comply with the provisions of Table 4.
10 Packaging, marking and quality certificate
The packaging, marking and quality certificate of steel plates shall comply with the
regulations of GB/T 713.1.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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