Chromium Zirconium copper C18150 is an excellent and unique copper alloy with high electrical conductivity, hardness and ductility, moderate strength and excellent resistance to softening at elevated temperatures.
Rods are supplied from the mill in the fully aged and drawn condition so no further heat treatment is required by the fabricator.
The softening temperature of C18150 rod exceeds 500°C as compared to unalloyed pure copper which softens at 200°C, and silver bearing coppers which soften at 350°C.
| Chemical Composition (%) | ||||
| Cr | Zr | Cu | ||
| 0.50-1.50 | 0.05-0.25 | bal. | ||
| Physical Properties | |
| Specific Gravity | 8.89 |
| Melting Point (Liquidus) | 1080°C (1976°F) |
| (Solidus) | 1070°C (1958°F) |
| Coefficient of Thermal Expansion per °F | 9.5 x 10-6 (77-212°F) |
| Electrical Conductivity at 20°C (volumetric) | 80% IACS (aged and drawn) |
| Thermal Conductivity Btu / ft.2 / ft. / hr. / °F at 68°F |
187 |
Applications:
This is specified mainly for electrode application. Also used for Rod extensions, pencil –type, light soldering guns, tips and rod extensions for resistance seam and spot welding.
International Specification:
- UNS.C18150, SAE J461,463
- RWMA Class 2, ISO5182-1991
- CuCr1Zr, DIN 17666 2.1293, CW106C to EN
Mechanical Properties:
- Temper: TF00
- Tensile Strength: 485 MPa
- Yield Strength: 380 MPa
- Elongation in 2": 21%
- Hardness: 70 HRB
Available as:
- Rods and Welding Tips