CW623N
CW623N, a leaded brass alloy, represents a substantial enhancement over traditional 60/40 brass. This alloy is particularly well-suited for large-scale production of brass components where optimizing output and tool longevity are paramount considerations. Additionally, CW623N is ideal for applications where no additional cold forming is necessary after machining.
CHEMICAL COMPOSITION
| Elements | Min (%) | Max (%) |
| Cu | 61.00 | 57.00 |
| Pb | 1.60 | 3.00 |
| Sn | – | 0.30 |
| Fe | – | 0.30 |
| Al | – | 0.05 |
| Ni | – | 0.30 |
| Total Others | – | 0.20 |
| Zn | Remainder | |
MECHANICAL PROPERTIES ACCORDING TO EN12167
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 | |
| Technique | Suitability |
| Machinability (CuZn39Pb3 = 100 %) | 80% |
| Capacity for being cold worked | Poor |
| Capacity for being hot worked | Excellent |
| Resistance welding (butt weld) | Fair |
| 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 |
