GB/T 31203-2014Aluminum alloy wheel castings for passenger car (English PDF)
乘用车铝合金车轮铸件
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
September 3, 2014
Implementation date
June 1, 2015
Scope
GB/T 31203-2014 is the English-translated version of 乘用车铝合金车轮铸件.
GB/T 31203-2014 is the Chinese standard "Aluminum alloy wheel castings for passenger car". Its scope clause reads: This standard specifies the cast alloy wheels for passenger cars (referred to as "casting") technical requirements, test methods and inspection rules and signs, Packaging, storage and transport.
This standard applies to the use of metal casting aluminum alloy wheels for passenger cars castings. Its clauses include technical requirements.
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Document preview — GB/T 31203-2014
National Standard of the People's Republic of China
- ICS
- 77.120.10
- Classification
- J 31
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 Technical requirements
- 3.1 Chemical composition
- 3.2 Mechanical Properties
1 Scope
This standard specifies the cast alloy wheels for passenger cars (referred to as "casting") technical requirements, test methods and inspection rules and signs,
Packaging, storage and transport.
This standard applies to the use of metal casting aluminum alloy wheels for passenger cars castings.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
RT Test Method. Test Part 1 GB/T 228.1 metallic materials tensile
GB/T 231.1 metallic materials Brinell hardness test - Part 1. Test methods
GB/T 7999 aluminum and aluminum alloys Optical emission spectroscopy method
GB/T 15056 Evaluation Method of casting surface roughness
GB/T 20975 (all parts), chemical analysis of aluminum and aluminum alloys
GB/T 23301 with cast aluminum automobile wheels
HB6578 aluminum, magnesium alloy castings inspection standard reference radiographs
3 Technical requirements
3.1 Chemical composition
Casting The chemical composition shall comply with the general requirements in Table 1.
Table 1 Chemical composition of castings
Chemical composition (mass fraction) /%
The main elements of impurity elements
Si Mg Ti Al Cu Zn Mn Fe
Other impurities
The sum of the individual 6.5 to 7.5 0.25 to 0.45 0.08 to 0.20 margin <=0.10 <=0.10 <=0.10 <=0.20 <=0.05 <=0.15
3.2 Mechanical Properties
T6 heat treatment after casting, the mechanical properties shall conform to Table 2.
Table 2 Mechanical Properties
Tensile strength Rm/MPa yield strength Rp0.2/MPa Elongation A /% Hardness HBW >=220 >=140 >=7 >=70 […]
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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