Standard designation
| EN: | CuSn5/CW451K |
| UNS: | C 51000 |
Chemical composition
| Cu: | Balance |
| Sn: | 4,5 - 5,5 % |
| P: | 0,01 - 0,4 % |
Physical properties1)
| Density: | 8,85 g/cm³ |
| Electrical conductivity: | 10 m/Ω·mm² = 16,5 % IACS2) |
| Thermal conductivity: | 82 W/m·K |
| Thermal expansion coefficient: | 18,2·10-6/K |
| Modulus of elasticity: | 118 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 |
R310/H75 |
R400/H120 |
R490/H160 |
|
Tensile strength RM |
310-390 MPa4) |
400-500 MPa |
490-580 MPa |
|
Yield strength RP0,2 |
≤ 250 MPa |
≥ 240 MPa |
≥ 430 MPa |
|
Elongation A50 |
≥ 45 % |
≥ 14 % |
≥ 8 % |
|
Hardness HV |
75-105 |
120-160 |
160-190 |
|
Temper |
R550/H180 |
R630/H200 |
R690/H220 |
|
Tensile strength RM |
550-640 MPa |
630-720 MPa |
≥690 MPa |
|
Yield strength RP0,2 |
≥ 510 MPa |
≥ 600 MPa |
≥ 670 MPa |
|
Elongation A50 |
≥ 4 % |
≥2 % |
- |
|
Hardness HV |
180-210 |
≥ 200-230 |
≥ 220 |