GB/T 2100-2017 PDF English
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Corrosion-resistant steel castings for general applications
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| GB/T 2100-2002 | English | 439 |
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Corrosion-resistant steel castings for general applications
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| GB/T 2100-1980 | English | 439 |
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Stainless acid-resistant steel castings--Specifications
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GB/T 2100-2017: PDF in English (GBT 2100-2017) GB/T 2100-2017
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.80
J 31
Replacing GB/T 2100-2002
Corrosion-resistant steel
castings for general applications
(ISO 11972.2015, Corrosion-resistant cast
steels for general applications, MOD)
ISSUED ON. NOVEMBER 01, 2017
IMPLEMENTED ON. MAY 01, 2018
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Technical requirements ... 7
4 Test methods ... 12
5 Inspection rules ... 13
6 Markings, storage, packaging and transportation ... 15
Appendix A (Informative) Comparison of clause numbers between this standard
and ISO 11972.2015 ... 17
Appendix B (Informative) Heat treatment process for corrosion-resistant steel
castings for general applications ... 18
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 2100-2002 “Corrosion-resistant steel castings for
general purposes”. As compared with GB/T 2100-2002, the main technical
contents are changed as follows.
- CHANGE the standard name into “Corrosion-resistant steel castings for
general applications”;
- ADD 9 kinds of material grades including ZG06Cr13Ni4Mo, ZG08Cr12Ni1,
ZG05Cr26Ni6Mo2N, ZG03Cr22Ni6Mo3N, ZG03Cr25Ni7Mo4WCuN,
ZG03Cr26Ni7Mo4CuN, ZG025Cr20Ni25Mo7Cu1N,
ZG025Cr20Ni19Mo7CuN and ZG03Cr26Ni6Mo3N;
- MODIFY the specifications of the tensile test specimen;
- MODIFY the technical requirements for major welding repairs;
- MODIFY the mechanical properties and heat treatment specifications of
ZG20Cr13.
This standard uses the redrafting method to modify and adopt ISO 11972.2015
“Corrosion-resistant cast steels for general applications”. As compared with ISO
11972.2015, this standard has made major adjustments to the standard
structure. Appendix A lists the clause number comparison between this
standard and ISO 11972.2015.
The main technical differences between this standard and ISO 11972.2015 and
its causes are as follows.
- With regard to normative references, this standard has made adjustments
with technical differences to adapt to China's technical conditions. The
adjustments are centrally reflected in clause 2 “Normative references”, with
specific adjustments as follows.
• ADD 28 normative references such as steel and alloy chemical analysis
methods.
- From the consideration of standard applicability, ADD clause 4 test methods,
clause 5 inspection rules, and clause 6 marking storage packaging and
transportation.
This standard was proposed by and shall be under the jurisdiction of the
National Foundry Standardization Technical Committee (SAC/TC 54).
Corrosion-resistant steel
castings for general applications
1 Scope
This standard specifies the technical requirements, test methods, inspection
rules and markings, storage, packaging and transportation of corrosion-
resistant steel castings for general applications.
This standard applies to corrosion-resistant steel castings for general
applications for various corrosion conditions.
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 standard.
GB/T 222 Permissible tolerances for chemical composition of steel products
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 223.12 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 223.13 Methods for chemical analysis of iron, steel and alloy - The
ammonium ferrous sulfate titration method for the determination of vanadium
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 223.24 Methods for chemical analysis of iron, steel and alloy - The
extraction separation -The dimethylglyoxime spectrophotometric 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 223.37 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 223.40 Iron, Steel and Alloy - Determination of niobium content by the
sulphochlorophenol S spectrophotometric method
GB/T 223.43 Iron steel and alloy - Determination of tungsten content -
Gravimetric method and spectrophotometric method
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 223.69 Iron, steel and alloy - Determination of carbon contents - Gas-
volumetric method after combustion in the pipe furnace
GB/T 223.85 Steel and iron - Determination of sulfur content - Infrared
absorption method after combustion in an induction furnace (GB/T 223.85-
2009, ISO 4935.1989, IDT)
GB/T 228.1 Metallic materials - Tensile testing - Part 1. Method of test at
room temperature (GB/T 228.1-2010, ISO 6892-1.2009, MOD)
GB/T 229 Metallic materials - Charpy pendulum impact test method (GB/T
229-2007, ISO 148-1.2006, MOD)
GB/T 5677 Radiographic testing for steel castings (GB/T 5677-2077, ISO
4993.1987, IDT)
GB/T 6060.1 Roughness comparison specimens - Cast surfaces
GB/T 6414 Castings - System of dimensional tolerances and machining
allowances
GB/T 7233.1 Steel castings - Ultrasonic examination - Part 1. Steel castings
for general purposes (GB/T 7233.1-2009, ISO 4992-1.2006, MOD)
GB/T 8170 Rules of rounding off for numerical values & expression and
judgement of limiting values
GB/T 9443 Penetrant testing for steel castings (GB/T 9443-2007, ISO
4987.1992, IDT)
GB/T 9444 Magnetic particle testing for steel castings (GB/T 9444-2007, ISO
3.5.2 Castings riser, burrs, sticky sand, etc. shall be cleaned, and the remaining
amount of the pouring riser shall meet the standards recognized by both the
supplier and the purchaser.
3.5.3 Casting surface roughness is selected in accordance with GB/T 6060.1,
and specified in the drawing or ordering contract.
3.6 Geometric tolerances, dimensional tolerances and weight tolerances
3.6.1 Geometric tolerances and dimensional tolerances of castings are to be in
accordance with drawings or ordering contracts.
3.6.2 If there is no requirement in the drawings and the ordering contract, the
geometric tolerance and dimensional tolerance of castings are selected in
accordance with GB/T 6414.
3.6.3 The casting weight tolerance is selected in accordance with GB/T 11351.
3.7 Welding repair
3.7.1 The supplier may carry out welding repairs unless otherwise no welding
repairs or major welding repairs are permitted in the order contract.
3.7.2 The definition of major welding repairs for a casting is. except where
otherwise agreed between the supplier and the purchaser, the depth of the
welding bevel (pit) is more than 22% or 25 mm of the wall thickness (whichever
is smaller); or its area exceeds 65 cm2; or when the hydraulic pressure test of
pressure-bearing castings leaks, it is considered as a significant welding repair.
3.7.3 If the casting needs a major welding repair, welding repairs shall be
carried out only after the consent of the purchaser, and a welding repair record
shall be made. The record shall include the welding position map, welding repair
process parameters, welding repair personnel, equipment and batch number of
welding consumables.
3.7.4 For major welding repairs, it is also required to provide the welding repair
procedure assessment report of the material and the casting defect welding
conditions, the welding repair location, and welding repair scope record, and
they will be described in the quality certificate.
3.7.5 After the welding repair of castings, stress relief treatment shall be done
in time in accordance with the material number and welding repair status.
3.8 Internal quality
The internal quality of the casting shall meet the drawing and technical
requirements of the purchaser.
shall not exceed twice (except for tempering).
5.2.9 The mechanical property test results that fail to meet the requirements for
the following reasons are considered invalid.
a) Improper specimen installation or abnormal function of the tester;
b) The tensile specimen is broken beyond the gauge;
c) Improper specimen preparation;
d) There is an abnormality in the specimen.
When one of the above conditions occurs, the specimen shall be prepared from
the same test block (casting) or another test block (casting) of the same batch,
and the test result can replace the test result of the bad specimen.
5.3 Appearance quality inspection
The quality of the appearance of the castings shall be checked visually by 100%.
5.4 Inspection of dimensional tolerance
The dimensional tolerances of the castings are spot checked by the amount
agreed by both parties.
5.5 Rounding off of inspection results
Casting size inspection results are rounded off in accordance with the
provisions of GB/T 8170.
6 Markings, storage, packaging and transportation
6.1 Markings and certificates
6.1.1 Markings
On the non-machined surface of the casting, the factory mark or other marks
required by the purchaser shall be cast; when the mark cannot be made on the
casting, it may be marked on the label of the casting.
6.1.2 Quality certificate
The castings exited from the factory shall be accompanied by a certificate of
conformity issued by the quality inspection department or a quality certificate.
The certificate of quality conformance shall include.
a) Supplier name and address;
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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