Eco-alloys
Chemical Composition
| Wisco’s commercial reference | Elements | Alloys as per most current up to date specifications (% percentage values) | Closest International Standards | |||||
|---|---|---|---|---|---|---|---|---|
| Cu | Sn | Pb | Zn | Ni | Σ Otros | |||
| W-5 E | % min. % máx. |
81 87 |
Resto | 4,0 6,0 |
2,0 4,0 |
6,0 8,0 |
1,0 |  |
| W-7 E | % min. % máx. |
Resto | Resto | 5,6 8 |
2,0 4,0 |
6,0 8,0 |
1,0 | |
- Correlation of International Norms
- * As per European directive 2002/95/EC ROHS (Restriction Of Hazardous Substances)
- (2) Ni content considered as Cu.
- (5) Forgeable material and feasible for other additional processes after casting in order to improve mechanical characteristics; these final mechanical values will depend of the chosen process.
- (6) Excellent deformation in cold.
Mechanical Properties
| Wisco’s commercial reference | Approximate Mechanical Characteristics at 20ºC. Minimum values | ||||
|---|---|---|---|---|---|
| Yield Point Rp 0.2N/mm² | Tensile Strength Rm N/mm² | Elongation A5 (%) | Hardness HB 10/100 | Yielding Module KN/mm² | |
| W-5 E | 110 | 220 | 12 | 65 | 65 a 105 |
| W-7 E | 120 | 240 | 12 | 70 | 98 a 115 |
- * As per European directive 2002/95/EC ROHS (Restriction Of Hazardous Substances)
Physical Properties
| Wisco’s commercial reference | Physical Properties | ||||
|---|---|---|---|---|---|
| Density Kg/dm² | Specific Heat j/g. k | Thermal Expansion 10-6 k | Thermal Conductivity W/m. º k | Electrical Conductivity m / (Ohm.mm²) | |
| W-5 E | 8,8 | 0,373 | 18,2 | 71 | 8,5 |
| W-7 E | 8,8 | 0,356 | 18,5 | 64 | 8,5 |
- * As per European directive 2002/95/EC ROHS (Restriction Of Hazardous Substances)