Product name: CuSn3Zn8Pb
Main alloying elements: Copper (Cu), tin (Sn), zinc (Zn), lead (Pb)
Mechanical properties:
Tensile strength: 290–400 MPa
Yield strength: 150–250 MPa
Elongation at break: 8–20%
Hardness (Rockwell): —
Modulus of elasticity: 90–110 GPa
Physical properties:
Density: 8.8 g/cm³
Melting point: approx. 890–950°C
Thermal conductivity: 40–60 W/(m·K)
Electrical conductivity: 25–35% IACS (International Annealed Copper Standard)
Chemical composition, in weight percent:
Copper (Cu): approx. 84–87%
Tin (Sn): approx. 2.5–3.5%
Zinc (Zn): approx. 8–9.5%
Lead (Pb): approx. 1.5–2.5%
Heat treatment:
CuSn3Zn8Pb is generally not heat-treated, as it offers a good combination of strength and ductility in the cast condition. However, heat treatment can be carried out to adjust the mechanical properties.
Corrosion resistance:
CuSn3Zn8Pb offers good corrosion resistance in atmospheric conditions, freshwater, and seawater. However, it is susceptible to corrosion in acidic or alkaline environments.
Applications:
CuSn3Zn8Pb is used in various applications, including:
Bearings: plain bearings, bearing bushes
Pump and valve components: housings, rotors, wear rings
Electrical engineering: connectors, contacts
General mechanical engineering: transmission components, gears
Please note that the values stated are guideline values and may vary slightly depending on the manufacturing process and specific production batch. It is recommended to always check the exact specifications provided by the manufacturer.
