CW510L is a lead free material which is however quite suitable for machining due to its structural constitution. CW510 can be used as a cost-effective replacement for conventional lead-containing machining brass provided that it must not meet high requirements as regards mechanical properties and corrosion resistance.
CHEMICAL COMPOSITION
| Elements | Min (%) | Max (%) |
| Cu | 57.00 | 59.00 |
| Pb | – | 0.20 |
| Fe | – | 0.30 |
| Sn | – | 0.30 |
| Ni | – | 0.30 |
| Al | – | 0.05 |
| Total Others | – | 0.20 |
| Zn | Remainder |
MECHANICAL PROPERTIES ACCORDING TO EN12164 CW510L (AS PER TEMPER 430)
| Range (mm) | From | To | UTS Min (N/mm²) | PS Min (N/mm²) | Elongation Min (%) | Hardness Min | Hardness Max |
| Round (Dia) | 2 | 40 | 430 | 220 | 10 | – | – |
| Hex (A/F) | 2 | 35 | 430 | 220 | 10 | – | – |
| Square (A/F) | 2 | 35 | 430 | 220 | 10 | – | – |
| PHYSICAL PROPERTIES |
| Electrical conductivity %IACS | 31 |
| Thermal conductivity W/(m·K) | 139 |
| Thermal expansion coefficient (0–300 °C) | 10-6 /K 21.70 |
| Density | 8.41 g/cm3 |
| Modulus of elasticity | 107 Gpa |
| FABRICATION PROPERTIES |
| Machinability (CuZn39Pb3 = 100 %) | 60% |
| Capacity for being cold worked | poor |
| Capacity for being hot worked | Excellent |
| Resistance welding (butt weld) | Fair |
| Inert gas shielded arc welding | Fair |
| Gas welding | Fair |
| Hard soldering | Excellent |
| Soft soldering | Excellent |
| Melting range | 870–900 °C |
| 650–750 °C | 650–750 °C |
| 450–550 °C | 450–550 °C |
| Thermal stress relieving (1–3 h) | 250–350 °C |
