Technical Specifications
Specifications & Mechanical Properties
- Copper (Cu): ~85% – base matrix.
- Tin (Sn): ~5% – improves corrosion resistance and strength.
- Lead (Pb): ~5% – enhances machinability.
- Zinc (Zn): ~5% – contributes to strength and wear resistance.
- Density: ~8.83 g/cm³ – heavy and robust material.
- Ultimate Tensile Strength (UTS): ~270 N/mm² – high load capability.
- Proof Strength (0.2%): ~100 N/mm² – moderate strength for applications.
- Elongation: ~13% – good ductility.
- Hardness: ~75 HB – moderate hardness.
- Processing / Treatment: Supplied cast; machining enhanced by lead content.
Thermal, Electrical & Miscellaneous Properties
- Melting Point (Approx): ~1010 °C – high temperature resistance.
- Thermal Conductivity: ~71.9 W/m·K – efficient heat transfer.
- Coefficient of Thermal Expansion: ~18 ×10⁻⁶ /K (20‑200 °C) – moderate thermal growth.
- Electrical Conductivity: ~15% IACS – moderate conductivity.
- Wear & Abrasion Resistance: Good under light to moderate loads.
- Corrosion Resistance: Reasonable in sea water and brine.
- Machinability: Excellent – ideal for pump, valve, and bearing components.
