Standard designation
| Marking according to DIN EN 1982: | CuSn12-C - GS |
| Material number according to DIN EN 1982: | CC483K |
| Old mark based on DIN 1705 and DIN 1716: | G-CuSn12 |
| Old material no.: | 2.1052.01 |
Chemical composition in wt. %
| Copper Cu | 85,0-88,5 |
| Nickel Ni | < 0,2 |
| Phosphorus P | < 0,6 |
| Lead Pb | < 0,7 |
| Tin Sn | 11,0-13,0 |
| Aluminium Al | < 0,01 |
| Iron Fe | < 0,2 |
| Manganese Mn | < 0,2 |
| Sulphur S | < 0,05 |
| Antimony Sb | < 0,15 |
| Silicon Si | < 0,01 |
| Zinc Zn | < 0,5 |
Physical properties
| Density g/cm³ | 8,6 |
| Melting range °C | 830-1000 |
| Shrinkage value °C | 1,5 |
| Electr. conductivity at 20 °C MS/m | 6,2 |
| Thermal conductivity at 20 °C W/(m*K) | 54 |
| Linear expansion coefficient 10-6/K | 18,5 |
Mechanical characteristics
| Tensile strength Rm (MPa) | 260 |
| 0,2 % - yield strength RP0,2 (MPa) | 140 |
| Ultimate tensile strength A (%) | 7 |
| Brinell hardness HB10 | 80 |
Technological properties
| Elastic modulus GPa | 90-110 |
| Flexural fatique strength MPa | 90 |
| Shear strength MPa | 195-210 |
Machining brazing-soldering and weldability
| Machinability | 3 |
| Brazing | good |
| Gas welding | medium |
| Inter gas welding | medium |
Comments
Material with good wear resistance, corrosion and salt water resistant. The materials CuSn12Ni2-C - GS and CuSn11Pb2 - GS were developed from this alloy. They are distinguished by increased stability and wear resistance along with improved antifriction properties.
Notes on usage
Dome bricks and coupling pieces, spindle nuts moved under load, worm gears and screw gears.