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GB/T 3280-2015 (GB/T3280-2015)

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GB/T 3280-2015: PDF in English (GBT 3280-2015)

GB/T 3280-2015
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.50
H 46
Replacing GB/T 3280-2007
Cold rolled stainless steel plate, sheet and strip
ISSUED ON. SEPTEMBER 11, 2015
IMPLEMENTED ON. JUNE 01, 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, code . 8
4 Order content . 9
5 Dimension, shape, weight and tolerances . 9
6 Technical requirements . 19
7 Test methods . 44
8 Inspection rules .. 46
9 Packaging, marking and quality certificate . 47
Annex A (informative) Comparison table of stainless steel designations of
various countries . 48
Annex B (informative) Characteristics and uses of stainless steel .. 54
Annex C (informative) Heat treatment system for stainless steel . 65
Foreword
This Standard was drafted according to the rules given in GB/T 1.1-2009.
This Standard replaces GB/T 3280-2007 “Cold rolled stainless steel plate,
sheet and strip”. Compared with GB/T 3280-2007, the main technical changes
are as follows.
- ADD “3/4 cold hardened state” in the classification;
- ADD “edge state” in the order contents;
- ADJUST the dimensional accuracy of steel plates, sheets and strips;
- MODIFY the unevenness of roll-cut steel strips II;
- ADD 23 steel designations and related technical requirements;
- ADJUST the chemical composition of 5 steel designations;
- ADJUST the mechanical properties of 13 steel designations, and
SUPPLEMENT some HV hardness;
- MODIFY the original steel designation 022Cr18NbTi to 022Cr18Nb;
- MODIFY the specimens for elongation at break of steel plates, sheets and
strips with a thickness of not more than 3 mm to A50 mm;
- ADD 2E surface processing type;
- MODIFY reinspection and determination rules;
- ADD specifications for rounding off of the test results of mechanical
properties and chemical composition;
- ADD Annex A “Comparison table of stainless steel designations of various
countries” (informative).
This Standard was proposed by China Iron and Steel Industry Association.
This Standard is under the jurisdiction of National Technical Committee on Steel
of Standardization Administration of China (SAC/C 183).
Main drafting organizations of this Standard. Shanxi Taigang Stainless Steel
Co., Ltd., Baosteel Stainless Steel Co., Ltd., China Metallurgical Information
and Standardization Institute, Sichuan Southwest Stainless Steel Co., Ltd.,
Ningbo Baoxin Stainless Steel Co., Ltd., Shandong Taishan Steel Group Co.,
Cold rolled stainless steel plate, sheet and strip
1 Scope
This Standard specifies the classification, code, order contents, dimension,
shape, weight and allowable deviation, technical requirements, test methods,
inspection rules, packaging, marking and quality certificate of cold rolled
stainless steel plates, sheets and strips.
This Standard applies to corrosion-resistant cold rolled stainless steel wide
steel strip (hereinafter referred to as wide steel strip) and its roll-cut cut-to-size
steel plate/sheet (hereinafter referred to as roll-cut steel plate/sheet), slitting
cold rolled wide steel strip (hereinafter referred to as slitting wide steel strip)
and its roll-cut cut-to-size steel strip (hereinafter referred to as roll-cut steel strip
I), cold rolled narrow steel strip (hereinafter referred to as narrow steel strip)
and its roll-cut cut-to-size steel strip (hereinafter referred to as roll-cut steel strip
II), as well as single-sheet steel plate/sheet.
2 Normative references
The following referenced documents are indispensable for the application 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 222 Permissible tolerances for chemical composition of steel products
GB/T 223.3 Methods for chemical analysis of iron, steel and alloy - The
diantipyryl methane 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-
benzoinoxime gravimetric method for the determination of molybdenum
content
GB/T 223.33 Methods for chemical analysis of iron, steel and alloy - The
chlorophosphonago 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 - The
sulphochlorophenol S spectrophotometric method
GB/T 223.53 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
extraction-absorption catalytic polarographic 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 materials - Tensile testing - Part 1. Method of test at
room temperature
GB/T 230.1 Metallic materials - Rockwell hardness test - Part 1. Test method
(scales A, B, C, D, E, F, G, H, K, N, T)
GB/T 231.1 Metallic materials - Brinell hardness test - Part 1. Test method
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 708-2006 Dimension, shape, weight and tolerance for cold-rolled steel
plates and sheets
GB/T 2975 Steel and steel products - Location and preparation of test pieces
for mechanical testing
GB/T 4334 Corrosion of metals and alloys - Test methods for intergranular
corrosion of stainless steels
GB/T 4340.1 Metallic materials - Vickers hardness test - Part 1. Test method
GB/T 8170 Rules of rounding off for numerical values & expression and
judgement of limiting values
GB/T 11170 Stainless steel - Determination of multi-element contents - Spark
discharge atomic emission spectrometric method (routine method)
GB/T 17505 Steel and steel products - General technical delivery
requirements
g) general designation of unevenness, PF.A;
h) higher designation of unevenness, PF.B;
i) general precision of camber, PC.A;
j) higher precision of camber, PC.B.
4 Order content
Contracts or orders placed under this Standard shall include the following.
a) standard number;
b) product name;
c) steel designation or unified digital code;
d) dimension and precision;
e) weight (amount) of delivery;
f) surface processing type;
g) edge state;
h) delivery state;
i) items or indicators, in the standard, that shall be agreed upon between the
supply and demand parties and specified in the contract. If not specified,
they shall be selected by the supply party;
j) other special requirements, proposed by the demand party, that shall be
agreed upon between the supply and demand parties and specified in the
contract.
5 Dimension, shape, weight and tolerances
5.1 Dimension and tolerances
5.1.1 Dimension range of steel plates, sheets and strips
The nominal dimension range of steel plates, sheets and strips is shown in
Table 1. The recommended nominal dimension shall comply with the
specifications of 5.2 in GB/T 708-2006. According to the requirements of the
demand party, and agreed upon between both parties, it may supply products
of lubricant on the steel plate (sheet) surface
during deep drawing. This surfac...
......
 
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