bedra electronic wire Bl4 out of a tin-bronze alloy for various applications (ribbon, heating conductors / resistance wire, special cables, bobbins, connectors, etc.).
| Norm | CuSn 4 |
|---|---|
| DIN | 17662 |
| EN DIN 12166 | CW 450 K |
| CDA UNS | not standardized |
| Alloy composition | Average values according to standard (%) |
| Cu | balance |
| Sn | 4.0 |
| P | 0.10 |
| Others | max. 0.5 |
| Density (kg/dm³) | 8.9 |
|---|---|
| Melting range (°C) | 960 - 1060 |
| E-Modulus (kN/mm²) | 125 |
| Thermal conductivity (W / m x K) | 90 |
| Coefficient of linear mean expansion (10-6/K) | 18.2 |
| Electric conductivity (m / Ω x mm²) | 12 |
| Electric conductivity (IACS %) | ~ 20 |
| Resistiviy (Ω x mm² /m) | 0.0833 |