W-5 Eco
EN 1982 CB491KCuSn5Zn5Pb5-C
- Tin bronze alloy also known as red bronze or leaded gunmetal following the European directive 2002/95/EC ROHS (Rectriction Of Hazardous Substances).
- The W-5 complies with the standard EN 1982 CB491K (CuSn5Zn5Pb5-C ) and is equivalent to the ASTM B505 C83600 standard.
- It offers a material that is resistant to sea water and is solderable with a soft solder, only conditionally with a hard solder.
- It is available in solid and hollow round bars, rectangular and square bars, half moons and profiles based on the design of the client.
Chemical composition
| % min. | % máx | |
|---|---|---|
| Cu1 | resto | |
| Sn | 4 | 6 |
| Pb | 2 | 4 |
| Zn | 6,0 | 8,0 |
| Ni | 1,0 | |
| Σ Others | 1,0 |
1Including nickel
Mechanical properties (Minimum values)
| Proceso de moldeo y designación | C. Continuous and C.Centrifugal |
|---|---|
| Tensile Strength (N/mm2) |
220 |
| Yield Point (N/mm2) |
110 |
| Elongation (A%) |
12 |
| Hardness HB-10-1000 | 65 |
1 For pieces with an exterior diameter of ≤ 300 mm. For larger sizes values to be agreed with the order.
Physical properties
| Density kg/dm3 |
8,8 |
|---|---|
| Specific Heat j/g. k |
0,373 |
| Thermal Expansion 10-6 k |
18,2 |
| Thermal Conductivity W/m. ºk |
71 |
| Electrical Conductivity m / (Ohm.mm2) |
8,5 |
Optional thermal treatments available on clients’ request
| Proceso | Temperature | Time | Cooling | Time |
|---|---|---|---|---|
| Stabilised | 400°C | * | En horno | 4h |