CW608N
CW608N represents a machining brass that effectively integrates the divergent material attributes of machining and cold working. This alloy has thus gained substantial prominence across diverse industries as the prevailing standard for both machining and cold working applications.
CHEMICAL COMPOSITION
| Elements | Min (%) | Max (%) |
| Cu | 60.00 | 61.00 |
| Pb | 1.60 | 2.50 |
| Sn | – | 0.20 |
| Fe | – | 0.20 |
| Al | – | 0.05 |
| Ni | – | 0.30 |
| Total Others | – | 0.20 |
| Zn | Remainder | |
MECHANICAL PROPERTIES ACCORDING TO EN12164 (AS PER TEMPER R410)
| Range (mm) | From | To | UTS Min (N/mm²) | PS Min (N/mm²) | Elongation Min (%) | Hardness Min | Hardness Max | |
| Round (Dia) | 2 | 40 | 410 | 230 | 12 | – | – | |
| Hex (A/F) | 2 | 35 | 410 | 230 | 12 | – | – | |
| Square (A/F) | 2 | 35 | 410 | 230 | 12 | – | – | |
| Rectangle (Thickness) | 3 | 50 | – | – | – | – | – | |
| PHYSICAL PROPERTIES | |
| Density | 8.44 g/cm³ |
| Electrical Conductivity % IACS at 68°F | 24 |
| Thermal Conductivity Btu/ sq ft/ ft hr/ °F at 68°F | 109 W/m.K |
| Thermal expansion coefficient | 20.4 10-6/K |
| Modulus of Elasticity | 102 Gpa |
| FABRICATION PROPERTIES | |
| Machinability (CuZn39Pb3 = 100 %) | 90% |
| Capacity for being cold worked | fair |
| Capacity for being hot worked | excellent |
| Resistance welding (butt weld) | good |
| Inert gas shielded arc welding | poor |
| Gas welding | Poor |
| Hard soldering | fair |
| Soft soldering | excellent |
| Melting range | 895-900 °C |
| Hot working | 650-750 °C |
| Soft annealing | 450-650 °C (1–3 hr) |
| Thermal stress relieving | 200-300 °C (1-3 hr) |
