CW710R
CW710R, brass, is a readily extrudable leaded alpha/beta brass with aluminum addition, which gives a bright golden color. The Small addition of lead gives free cutting properties
CHEMICAL COMPOSITION
| Elements | Min (%) | Max (%) |
|---|---|---|
| Cu | 58.00 | 60.00 |
| Pb | 0.20 | 0.80 |
| Al | 0.30 | 1.30 |
| Fe | - | 0.50 |
| Mn | 1.50 | 2.50 |
| Ni | 2.00 | 3.00 |
| Sn | - | 0.50 |
| Si | - | 0.10 |
| Total Others | - | 0.30 |
| Zn | Remainder | |
Mechanical Properties According To EN12165 CW710R (As Per Temper H120)
| Range (mm) | From | To | UTS Min (N/mm²) | UTS Max (N/mm²) | PS Min (N/mm²) | Elongation Min (%) | Hardness Min (HB) | Hardness Max (HB) | |
|---|---|---|---|---|---|---|---|---|---|
| Round (Dia) | 8 | 75 | - | - | - | - | 120 | 200 | |
| Hex (A/F) | 8 | 60 | - | - | - | - | 120 | 200 | |
| Square (A/F) | 8 | 60 | - | - | - | - | 120 | 200 | |
| Rectangle | Thickness | 8 | 50 | - | - | - | - | 120 | 200 |
| PHYSICAL PROPERTIES | |
|---|---|
| Electrical conductivity | 7.8 %IACS |
| Thermal conductivity | 63 W/(m·K) |
| Thermal expansion coefficient (0–300 °C) | 20.6 10⁻⁶/K |
| Density | 8.12 g/cm³ |
| Modulus of elasticity | 93 Gpa |
| FABRICATION PROPERTIES | |
|---|---|
| Technique | Suitability |
| Machinability (CuZn39Pb3 = 100 %) | 50% |
| Capacity for being cold worked | Poor |
| Capacity for Being Hot Worked | Good |
| Resistance welding (butt weld) | Good |
| Inert gas shielded arc welding | Fair |
| Gas welding | Fair |
| Hard soldering | Fair |
| Soft soldering | Fair |
| Melting range | 870 – 900 °C |
| Hot working | 600–700 °C |
| Soft annealing | 500–650 °C (1–3 hr) |
| Thermal stress relieving | 350–450 °C (1-3 hr) |
TYPICAL USES
- Architecture
- Builders Hardware