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
| PHYSICAL PROPERTIES |
| Electrical conductivity |
7.8 %IACS |
| Thermal conductivity |
63 W/(m·K) |
| Thermal expansion coefficient (0–300 °C) |
20.6 10??/K |
| Density |
8.12 g/cm³ |
| Modulus of elasticity |
93 Gpa |
Fabrication Properties
| 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) |
