Standard designation
| EN: | CuSn6/CW452K |
| UNS: | C 51900 |
Chemical composition
| Cu: | Balance |
| Sn: | 5,5 - 7,0 % |
| P: | 0,01 - 0,4 % |
Physical properties1)
| Density: | 8,8 g/cm³ |
| Electrical conductivity: | 9 m/Ω·mm² = 15 % IACS2) |
| Thermal conductivity: | 75 W/m·K |
| Thermal expansion coefficient: | 18,5·10-6/K |
| Modulus of elasticity: | 115 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 |
R350/H80 |
R420/H125 |
R500/H160 |
|
Tensile strength RM |
350-420 MPa4) |
420-520 MPa |
500-590 MPa |
|
Yield strength RP0.2 |
≤ 300 MPa |
≥ 260 MPa |
≥ 450 MPa |
|
Elongation A50 |
≥ 45 % |
≥ 17 % |
≥ 8 % |
|
Hardness HV |
80-110 |
125-165 |
160-190 |
|
Temper |
R560/H180 |
R640/H200 |
R720/H220 |
|
Tensile strength RM |
560-650 MPa |
640-730 MPa |
≥720 MPa |
|
Yield strength RP0.2 |
≥ 500 MPa |
≥ 600 MPa |
≥ 690 MPa |
|
Elongation A50 |
≥ 5 % |
≥3 % |
- |
|
Hardness HV |
180-210 |
≥ 200-230 |
≥ 220 |