CC493K CuSn7ZnPb tin bronze
CuSn7ZnPb is tin bronze, also known as red bronze or leaded bronze.
It is the most widely used alloy on the market.
The closest international standards are ASTM B505, C93200 and RG7 DIN 1705.
It has excellent resistance and elongation correlation
It is a semi-rigid material that is resistant to wear, corrosion and seawater. General purpose.
chemical composition%:
Cu: 81.0~85.0b
Ni：≤2.0
P：≤0.10
Pb: 5.0~8.0
Sn: 6.0~8.0
Zn: 2.0~5.0
Al: ≤0.01
Fe: ≤0.2
S：≤0.10
Sb：≤0.3
Si: ≤0.01
Note: 1. Copper content includes nickel
2. For continuous castings and centrifugal castings, the minimum tin content should be 5.2%, and the maximum copper content for ingots should be 86.0%.
Basic mechanical properties:
Tensile strength Rm (MPa): 260
Yield point 0.2%Rp0.2 (MPa): 120
Elongation 5DA (%): 12
Hardness HBW (10-1000): 70
Basic physical properties:
Density kg/dm³: 8.8
Specific heat J/(g*K): 0.356
Thermal expansion 10^-6 K: 18.5
Thermal conductivity W/(m*K): 64
Conductivity MS/m: 7.5
