Standard designation
| EN: | CuSn3Zn9/CW454K |
| UNS: | C 42500 |
Chemical composition
| Cu: | Balance |
| Sn: | 1,5 - 3,5 % |
| Zn: | 7,5 - 10 % |
Physical properties1)
| Density: | 8,75 g/cm³ |
| Electrical conductivity: | 14 m/Ω·mm² = 24 % IACS2) |
| Thermal conductivity: | 62 W/m·K |
| Thermal expansion coefficient: | 18,4·10-6/K |
| Modulus of elasticity: | 120 GPa3) |
1) Guideline values for room temperature
2) IACS =International Annealed Copper Standard
3) 1 GPa = 1 kN/mm²
Processing information
| Weldability: | good |
| Solderability: | good |
| Stress corrosion cracking: | negligible |
Mechanical properties
|
Temper |
R320/H80 |
R380/H110 |
R430/H140 |
|
Tensile strength RM |
320-380 MPa4) |
380-430 MPa |
430-520 MPa |
|
Yield strength RP0.2 |
≤ 230 MPa |
≥ 200 MPa |
≥ 330 MPa |
|
Elongation A50 |
≥ 25 % |
≥ 16 % |
≥ 6 % |
|
Hardness HV |
80-110 |
110-140 |
140-170 |
|
Temper |
R510/H160 |
R580/H180 |
R660/H200 |
|
Tensile strength RM |
510-600 MPa |
580-690 MPa |
≥660 MPa |
|
Yield strength RP0.2 |
≥ 430 MPa |
≥ 520 MPa |
≥ 610 MPa |
|
Elongation A50 |
≥ 3 % |
- |
- |
|
Hardness HV |
160-190 |
≥ 180-210 |
≥ 200 |