GB/T 4237-2015 English PDF (GBT4237-2015)

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GB/T 4237-2015: Hot rolled stainless steel plate, sheet and strip
GB/T 4237-2015
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.50
H 46
Replacing GB/T 4237-2007
Hot rolled stainless steel plate, sheet and strip
ISSUED ON. SEPTEMBER 11, 2015
IMPLEMENTED ON. JUNE 1, 2016
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.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Classification and code ... 8
4 Order content ... 8
5 Dimension, shape, weight and allowable deviation ... 9
6 Technical requirements ... 15
7 Test methods ... 33
8 Inspection rules ... 36
9 Packing, marking and quality certificate ... 37
Annex A (informative) Comparing table of stainless steel grades in different countries
... 38
Annex B (informative) Characteristics and uses of stainless steels ... 43
Annex C (informative) Heat treatment system of stainless steels ... 57
Foreword
This Standard is drafted according to the rules given in GB/T 1.1-2009.
This Standard replaces GB/T 4237-2007 “Hot rolled stainless steel plate, sheet and
strip”. Compared with the GB/T 4237-2007, the main technical changes are as follows.
- ADD “edge state” in the order content;
- ADD the width range and its corresponding dimension precision of steel plates;
- ADD the thickness range and its corresponding dimension precision of wide steel
coils;
- MODIFY the allowable deviation of thick steel plates and wide steel strips’ width;
- ADD 23 steel grades and related technical requirements;
- ADJUST the chemical composition of 5 steel grades;
- REVISE the mechanical properties of 13 steel grades;
- CHANGE the original steel grade, 022Cr18NbTi, TO 022Cr18Nb;
- ADD the grain size requirement for 4 steel grades of in the special requirements;
- MODIFY the reinspection and determination rules;
- ADD the mechanical properties and rules of rounding off for chemical composition
test results;
- ADD the informative Annex A “Comparing table of stainless steel and heat-
resistant steel grades in different countries”.
This Standard is proposed by the China Iron and Steel Association.
The Standard shall be under the jurisdiction of the National Technical Committee on
Steel of the Standardization Administration of China (SAC/TC 183).
Main drafting organizations of this Standard. Shanxi Taigang Stainless Steel Co., Ltd.,
Baosteel Stainless Steel Co., Ltd., Metallurgical Industry Information Standards
Research Institute, Sichuan Southwest Stainless Steel Co., Ltd., Shandong Taishan
Iron and Steel Group Co., Ltd.
Main drafters of this Standard. Liu Hongtao, Wu Qiang, Xu Zhongjie, Dong Li, Wang
Jun, Chen Peidun, Zhang Jiansheng, Wang Xiaohu, Zhang Li, Li Liuyi, Li Xiongfei,
Luan Yan, Zhang Weixu.
Hot rolled stainless steel plate, sheet and strip
1 Scope
This Standard specifies the classification, code, order content, dimension, shape,
weight and allowable deviation, technical requirements, test methods, inspection rules,
packaging, marking and product quality certificates of hot rolled stainless steel plates,
sheets and strips.
This Standard applies to corrosion-resistant hot-rolled thick stainless steel plates
(hereinafter referred to as thick steel plates), corrosion-resistant hot-rolled wide
stainless steel strips (hereinafter referred to as wide steel strips) and their roll-cutting
specified-length steel plates (hereinafter referred to as roll-cutting steel plates) and
slitting wide steel strips, also applies to corrosion-resistant hot-rolled narrow stainless
steel strips (hereinafter referred to as narrow steel strips) and their roll-cutting
specified-length steel strips (hereinafter referred to as roll-cutting steel strips).
2 Normative references
The following documents are indispensable for the application of this document. For
dated references, only the dated edition applies to this document. For undated
references, the latest edition (including all amendments) applies to this document.
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 223.4 Alloyed steel - Determination of manganese content - Potentiometric or
visual titration method
GB/T 223.5 Steel and iron - Determination of acid-soluble silicon and total silicon
content - Reduced molybdosilicate spectrophotometric method
GB/T 223.8 Methods for chemical analysis of iron, steel and alloy - The sodium
fluoride separation-EDTA titration method for the determination of aluminium
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 223.16 Methods for chemical analysis of iron, steel and alloy - The
chromotropic acid 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 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 223.25 Methods for chemical analysis of iron, steel and alloy - The
dimethylglyoxime gravimetric method for the determination of nickel content
GB/T 223.26 Iron steel and alloy - Determination of molybdenum content - The
thiocyanate spectrophotometric method
GB/T 223.28 Methods for chemical analysis of iron steel and alloy - The α-
denzoinoxime gravimetric method for the determination of molybdenum content
GB/T 223.33 Methods for chemical analysis of iron, steel and alloy - The
chlorophosphonazo mA photometric method for the determination of cerium content
after extraction separation
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 223.40 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 223.58 Methods for chemical analysis of iron, steel and alloy - The sodium
arsenite-sodium nitrite titrimetric method for the determination of manganese
content
GB/T 223.60 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 223.68 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 Metallic material...