JB/T 7923-1995 Aluminum-based alloys for sliding bearings and single-layer bearings

JB/T 7923-1995 Sliding bearings Aluminium-based alloys for single-layer bearings JB/T7923-1995 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Aluminum alloys for single-layer bearingsbzxZ.net
Sliding bearings
Plain bearings--Aluminum alloys for solid bearings
This standard refers to ISO6279-1979 "Sliding bearings--Aluminum alloys for single-layer bearings". 1 Subject content
GB10450-89
JB/T7923-95
This standard specifies the chemical composition, mechanical and physical properties, marking and test methods of aluminum alloys used to manufacture single-layer bearings. 2 Reference standards
Metal tensile test method
GB10452 Sliding bearings Single-layer bearing anti-friction alloy hardness test method 3 Chemical composition and mechanical and physical properties
3,1 Chemical composition
The chemical composition of aluminum alloys for single-layer bearings is shown in the table below. The individual values ​​in the table represent the maximum allowable content. The analysis method of chemical composition shall be negotiated by the supply and demand parties. 3.2 Mechanical and physical properties
The mechanical and physical properties of aluminum-based alloys for single-layer bearings are shown in the table below. The strength αo2, elastic modulus E, thermal expansion coefficient ai, thermal conductivity λ, and density p in the table are recommended values ​​for designers to choose.
4 Mechanical property test method
The tensile test of alloy materials shall be carried out in accordance with the provisions of GB228. The hardness test of alloy materials shall be carried out in accordance with the provisions of GB10452. 5 Marking
Marking example of aluminum alloy AISn6CuNi:
Aluminum alloy GB10450—A1Sn6CuNi
Approved by the Ministry of Machinery and Electronics Industry of the People's Republic of China on 1989-02-1024
Implementation on 1990-01-01
Chemical elements and properties
Mechanical and physical properties
Brinell hardness min
HB10/1000/10
Tensile strength min
Elongation 8
Suitable strength 602
Elastic modulus E
kN/mm2
Thermal expansion coefficient α
10/Kα
Thermal conductivity IN
W / (m·K)α
Density p
kg/dm3
GB1643C-83
Chemical composition of aluminum-based alloy for single-layer bearings
Gravity casting
Chemical composition
4% cold work hardening
Continuous casting
4% cold work hardening
Additional instructions:
This standard is proposed by the Ministry of Machinery and Electronics Industry. GB10450—89
This standard is under the jurisdiction of the Mechanical Standardization Research Institute of the Ministry of Machinery and Electronics Industry. This standard is drafted by the Mechanical Standardization Research Institute of the Ministry of Machinery and Electronics Industry and Changchun Automobile Research Institute. The main drafters of this standard are Wan Ma and Zhang Baoyi. 26
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