CW624N
DESCRIPTION
CW624N Leaded brass, is a significantly improved form of 60/40 brass, It is used in the mass production of brass components where maximum output and longest tool life are required, and where no further cold forming after machining is required.
CHEMICAL COMPOSITION
| Elements |
Min (%) |
Max (%) |
| Cu |
55.00 |
57.00 |
| Pb |
1.60 |
3.00 |
| Sn |
- |
0.30 |
| Fe |
- |
0.30 |
| Al |
0.50 |
0.50 |
| Ni |
- |
0.30 |
| Total Others |
- |
0.20 |
| Zn |
Remainder |
MECHANICAL PROPERTIES ACCORDING TO BS2874 (AS PER TEMPER M)
No Mechanical properties for this alloy. Mechanical properties as agreed between punchers and supplier.
| PHYSICAL PROPERTIES |
| Electrical conductivity %IACS |
25 |
| Thermal conductivity W/(m·K) |
113 |
| Thermal expansion coefficient (0–300 °C) |
10-6 /K 21.40 |
| Density |
8.46 g/cm3 |
| Modulus of elasticity |
96 Gpa |
| FABRICATION PROPERTIES |
| Machinability (CuZn39Pb3 = 100 %) |
80% |
| Capacity for being cold worked |
Poor |
| Capacity for being hot worked |
Excellent |
| Resistance welding (butt weld) |
Fair |
| Inert gas shielded arc welding |
Poor |
| Gas welding |
Poor |
| Hard soldering |
Fair |
| Soft soldering |
Excellent |
| Melting range |
880–895 °C |
| Hot working |
650–800 °C |
| Soft annealing (1–3 h) |
450–600 °C |
| Thermal stress relieving (1–3 h) |
200–300 °C |
TYPICAL USES
- Builders Hardware
- Consumer
