CuSn7Zn2Pb3-C - GS
| Standard designation | |
|---|---|
| Classification in accordance with DIN EN 1982 | CuSn7Zn2Pb3-C - GS |
| Material number in accordance with DIN EN 1982 | CC492K |
| Old classification in accordance with DIN 1705 and DIN 1716 | G-CuSn6ZnNi |
| Old material no. | 2.1093.01 |
| Chemical composition in weight % | |
|---|---|
| Copper Cu | 85.0-89.0 (including nickel) |
| Nickel Ni | < 0.2 |
| Phosphorus P | < 0.10 |
| Lead Pb | 2.5-3.5 |
| Tin Sn | 6.0-8.0 |
| Aluminium Al | < 0.01 |
| Iron Fe | < 0.2 |
| Sulphur S | < 0.10 |
| Antimony Sb | < 0.25 |
| Silicon Si | < 0.01 |
| Zinc Zn | 1.5-3.0 |
| Physical properties | |
|---|---|
| Density g/cm³ | 8.7 |
| Melting range °C | 830-1030 |
| Amount of shrinkage °C | 1.3-1.5 |
| Electr. conductivity at 20°C MS/m | 7.9 |
| Thermal conductivity at 20°C W/(m*K) | 69 |
| Linear thermal expansion coefficient 10-6/K | 18.5 |
| Mechanical properties | |
|---|---|
| Tensile strength Rm (MPa) | 230 |
| 0.2% - yield strength RP 0.2 (MPa) | 130 |
| Elongation at break A (%) | 14 |
| Brinell hardness HB10 | 65 |
| Technological properties | |
|---|---|
| Elasticity modulus GPa | 90-96 |
| Flexural strength MPa | 80 |
| Shear strength MPa | 200-215 |
| Chip brazing and weldability | |
|---|---|
| Machinability | 1 |
| Brazing | good |
| Gas welding | medium |
| Inert gas welding | poor |
| Comments |
|---|
| Construction material with good strength and elongation, good for casting, seawater resistant |
| Notes on use |
|---|
| Is already used frequently as a construction material |