CW713R
CW713R is a special brass with very high wear resistance due to silicide’s embedded in the structure. This alloy is used for slide bearings and valve guides as well as for construction components in mechanical engineering. This alloy is also highly suitable for hot stamped parts requiring higher mechanical strength and higher wear resistance
CHEMICAL COMPOSITION
| Elements | Min (%) | Max (%) |
|---|---|---|
| Cu | 57.00 | 59.00 |
| Pb | 0.20 | 0.80 |
| Si | 0.30 | 1.30 |
| Mn | 1.50 | 3.00 |
| Sn | - | 0.40 |
| Fe | - | 1.00 |
| Ni | - | 1.00 |
| Al | 1.30 | 2.30 |
| Total Others | - | 0.30 |
| Zn | Remainder | |
Mechanical Properties According To EN12164 CW713R (As Per Temper R540)
| Range (mm) | From | To | UTS Min (N/mm²) | UTS Max (N/mm²) | PS Min (N/mm²) | Elongation Min (%) | Hardness Min | Hardness Max | |
|---|---|---|---|---|---|---|---|---|---|
| Round (Dia) | 5 | 75 | 540 | - | 280 | 15 | - | - | |
| Hex (A/F) | 5 | 60 | 540 | - | 280 | 15 | - | - | |
| Square (A/F) | 5 | 60 | 540 | - | 280 | 15 | - | - | |
| 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 | Excellent |
| Resistance welding (butt weld) | Good |
| Inert gas shielded arc welding | Good |
| Gas welding | Fair |
| Hard soldering | Poor |
| Soft soldering | Poor |
| Melting range | 875 – 910 °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
- Bushings
- Cams
- Shafts
- Wear Plates
- Gears
- Chain Guides
- Food Conveyor
- Connecting Rods