Standard designation
| EN: | not standardised |
| UNS: | C 52400 |
Chemical composition
| Cu: | Rest Balance |
| Sn: | 9 - 11 % |
| P: | 0,03 - 0,35 % |
Physical properties1)
| Density: | 8,75 g/cm³ |
| Electrical conductivity: | 6,4 m/Ω·mm² = 11 % IACS2) |
| Thermal conductivity: | 50 W/m·K |
| Thermal expansion coefficient: | 18,4·10-6/K |
| Modulus of elasticity: | 110 GPa3) |
1) Guideline values for room temperature
2) IACS =International Annealed Copper Standard
3) 1 GPa = 1 kN/mm²
Processing information
| Weldability: | good |
| Solderability: | very good |
| Stress corrosion cracking: | none |
Mechanical properties
|
Temper |
R400/H120 |
R480/H140 |
R550/H170 |
|
Tensile strength RM |
400-500 MPa4) |
480-560 MPa |
550-650 MPa |
|
Yield strength RP0,2 |
≤ 200 MPa |
≥ 325 MPa |
≥ 410 MPa |
|
Elongation A50 |
≥ 55 % |
≥ 40 % |
≥ 30 % |
|
Hardness HV |
120-150 |
140-170 |
170-200 |
| Temper | R650/H200 | R740/H200 | R790/H235 | R830/H250 |
|
Tensile strength RM |
650-750 MPa |
740-830 MPa |
790-890 MPa |
≥ 830 MPa |
|
Yield strength RP0,2 |
≤ 550 MPa |
≤ 680 MPa |
≤ 740 MPa |
≥ 780 MPa |
|
Elongation A50 |
≥ 18 % |
≥ 9 % |
≥ 4 % |
≥ 2 % |
|
Hardness HV |
200-230 |
220-250 |
235-270 |
≥ 250 |
4) 1 MPa = 1 N/mm²