Project Description
W-12Ni
EN 1982 CC484KCuSn12Ni2
- W-12Ni is a tin bronze which has 12% tin and between 1,5% and 2,5% nickel, chemical component which delivers greater hardness and corrosion resistance.
- This tin bronze is recommended for gearboxes and toothed gearings, bearings for heavy loads and relatively slow speeds.
Chemical composition
| % min. | % máx | |
|---|---|---|
| Cu | 84,5 | 87,5 |
| Sn | 11,0 | 13,0 |
| Pb | 0,3 | |
| Zn | 0,4 | |
| P | 0,05 | 0,40 |
| Fe | 0,2 | |
| Ni | 1,5 | 2,5 |
| Sb | 0,1 | |
| S | 0,05 | |
| Al | 0,01 | |
| Mn | 0,2 | |
| Si | 0,01 |
Mechanical properties (Minimum values)
| Moulding process and nomination | Continuous (GC)1 | Centrifugal (GZ) |
|---|---|---|
| Tensile Strength Rm (MPa) |
300 | 300 |
| Yield Point 0,2% Rp0,2 (MPa) |
180 | 180 |
| Elongation 5D A (%) |
10 | 8 |
| HBW (10-1000) | 95 | 95 |
Physical properties
| Density kg/dm3 |
8,6 |
|---|---|
| Specific Heat J/(g*K) |
0,376 |
| Thermal Expansion 10-6 K |
18,5 |
| Thermal Conductivity W/(m*K) |
54 |
| Electrical Conductivity MS/m |
6,2 |
Optional thermal treatments available on clients’ request
| Process | Temperature | Time | Cooling | tmp. |
|---|---|---|---|---|
| Stabilised | 400°C | 1.5h | Slow | 50ºC/h |
| Step change | 630°C | 1.5h | Slow | 50ºC/h |