Standard designation
| EN: | CW111C |
| UNS: | C 70260 |
Chemical composition
| Cu: | Balance |
| Ni: | 1,60 - 2,50 % |
| Si: | 0,40 - 0,70 % |
| P: | max. 0,01 % |
Physical properties1)
| Density: | 8,82 g/cm³ |
| Electrical conductivity: | 23-29 m/Ω·mm² = 40-50 % IACS2)3) |
| Thermal conductivity: | 156 W/m·K |
| Thermal expansion coefficient: | 17·10-6/K |
| Modulus of elasticity: | 130 GPa4) |
1) Guideline values for room temperature
2) IACS =International Annealed Copper Standard
3) depending on the temper
4) 1 GPa = 1 kN/mm²
Processing information
| Weldability: | good |
| Solderability: | good |
| Stress corrosion cracking: | none |
Mechanical properties
|
Temper |
R580/H120 |
R620/H170 |
R650/H200 |
|
Tensile strength RM |
580-660 MPa5) |
620-700 MPa |
650-730 MPa |
|
Yield strength RP0,2 |
≥ 520 MPa |
≥ 550 MPa |
≥ 570 MPa |
|
Elongation A50 |
≥ 12 % |
≥ 10 % |
≥ 7 % |
|
Hardness HV |
175-205 |
190-215 |
195-225 |
|
Temper |
R720/H220 |
|
|
Tensile strength RM |
≥ 720 MPa |
|
|
Yield strength RP0,2 |
≥ 650 MPa |
|
|
Elongation A50 |
≥ 3 % |
|
|
Hardness HV |
≥ 215 |