GB/T 39033-2020 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Name of Chinese Standard | Status |
| GB/T 39033-2020 | English | 170 |
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Austenitic-ferritic duplex stainless steel wire rods
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GB/T 39033-2020: PDF in English (GBT 39033-2020) GB/T 39033-2020
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.60
H 44
Austenitic-ferritic duplex stainless steel wire rods
ISSUED ON: JULY 21, 2020
IMPLEMENTED ON: FEBRUARY 01, 2021
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Order content ... 6
4 Size, shape, weight and allowable deviation ... 7
5 Technical requirements ... 7
6 Test method ... 10
7 Inspection rules ... 11
8 Packaging, marking and quality certificate ... 12
Appendix A (Informative) Comparison between the designations of this
Standard and the designations of similar standards at home and abroad ... 13
Appendix B (Informative) Recommended heat treatment system of this
standard designation ... 14
Austenitic-ferritic duplex stainless steel wire rods
1 Scope
This Standard specifies the order content, size, shape, weight and allowable
deviation, technical requirements, test methods, inspection rules, packaging,
marking and quality certificate of austenitic-ferritic duplex stainless steel wire
rods.
This Standard applies to austenitic-ferritic duplex stainless steel round wire rods
whose nominal diameter is 5.0 mm ~ 40.0 mm.
This Standard does not apply to welding wire rods.
2 Normative references
The following documents are indispensable for the application of this document.
For dated references, only the dated version 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 223.5, Steel and iron - Determination of acid-soluble silicon and total
silicon content - Reduced molybdosilicate spectrophotometric method
GB/T 223.11, Iron, steel and alloy - Determination of chromium content -
Visual titration or potentiometric titration method
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 223.25, 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 13305, Micrographic method for determining area content of the α-
phases in stainless steels
GB/T 14981-2009, Dimension shape mass and tolerance for hot-rolled round
wire rod
GB/T 17505, Steel and steel products - General technical delivery
requirements
GB/T 20066, Steel and iron - Sampling and preparation of samples for the
determination of chemical composition
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 20124, Steel and iron - Determination of nitrogen content - Thermal
conductimetric method after fusion in a current of inert gas
GB/T 36164, High alloy steel - Determination of multi-element contents - X-
ray fluorescence spectrometry (routine method)
YB/T 081, Rule for rounding off of numerical values and judgment of testing
values for technical standards of metallurgy
3 Order content
Contracts which order in accordance with this Standard shall at least contain
the following contents:
a) reference to this Standard;
b) product name:
c) designation or unified digital code;
d) delivery weight (or quantity);
e) size and shape;
f) delivery status;
g) other special requirements.
a When electroslag steels are batched according to the sub-heat number, except that
the surface and size are sampled one by one, the sampling quantity for other
inspection items is 1. When it is batched according to the electroslag electrode's
smelting master heat number, except that, for chemical composition, 1 is taken for
each electroslag furnace number, the sampling quantity for other inspection items is
the same as that specified in the table.
6.2 The chemical analysis method is carried out in accordance with GB/T 223.5,
GB/T 223.11, GB/T 223.18, GB/T 223.25, GB/T 223.26, GB/T 223.28, GB/T
223.43, GB/T 223 .53, GB/T 223.62, GB/T 223.63, GB/T 223.79, GB/T 223.85,
GB/T 223.86 or GB/T 11170, GB/T 20123, GB/T 20124, GB/T 36164. The
arbitration is carried out according to GB/T 223.5, GB/T 223.11, GB/T 223.18,
GB/T 223.25, GB/T 223.26, GB/T 223.28, GB/T 223.43, GB/T 223.53, GB/T
223.62, GB/T 223.63, GB/T 223.79, GB/T 223.85, GB/T 223.86, GB/T 20124.
7 Inspection rules
7.1 Inspection and acceptance
The quality of the wire rod is inspected by the quality supervision department of
the supplier; the buyer has the right to inspect and accept in accordance with
the provisions of this Standard.
7.2 Batch rules
Wire rods shall be inspected and accepted in batches; each batch shall be
composed of wire rods of the same designation, the same heat number, the
same specification, the same rolling system and the same heat treatment
furnace. Electroslag steels, under the stable process conditions, are allowed to
be batched according to the electroslag electrode smelting master furnace
number.
7.3 Re-inspection and determination rules
The re-inspection and determination rules of the wire rods are performed
according to the provisions of GB/T 17505.
7.4 Numerical rounding
The numerical rounding of the test results shall be performed according to the
rounding-off value comparison method to a value that is consistent with the digit
that is identified by the standard number of the specified value; the rounding
rules shall comply with the provisions of YB/T 081.
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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