C18150 Copper Chromium Zirconium
RWMA Class II
Used extensively for cap style resistance welding electrodes. Evidence suggests that it can provide less sticking and resist deformation longer than its copper-chrome counterpart in some specific situations.

Typical Uses for C18150 Copper Chromium Zirconium
- Consumer: Pencil-type & Light Soldering Guns: Tips, Rod Extensions
- Electrical: Resistance Welding Electrodes
- Industrial: Welding Electrodes, Welding Wheels, Tips and Rod Extensions
Product Specifications
End Product | Specification |
Information not available on website |
Chemical Composition
Cr | Cu | Zr | |
Min/Max | 0.5 - 1.5 | Rem | 0.05 - 0.25 |
Nominals | 1.0000 | 98.9000 | 0.1000 |
Temper
Product Type | Temper Type |
Information not available on website |
Mechanical Properties
RWMA CLASS (Alloy Number) |
Chemical Composition | Hardness | Conductivity(%) | Tensile Strength |
Class 2 (18200) | CR.60-1.2 | B70-83 | 80-85 | 50-70 ksi |
Class 2 (18150) | Cr.50-1.5 / ZR.05-.25 | B70-83 | 80-85 | 50-70 ksi |
Physical Properties
Product Property | US Customary | Metric |
Coefficient of Thermal Expansion | 9.5 · 10-6 per oF (68-572 F) | 16.45 · 10-6 per oC (20-200 C) |
Density | 0.321 lb/in3 @ 68 F | 8.89 gm/cm3 @ 20 C |
Electrical Conductivity | 80 %IACS @ 68 F | 0.464 MegaSiemens/cm @ 20 C |
Melting Point Liquid US | 1976 F | 1080 C |
Melting Point Solid US | 1958 F | 1070 C |
Modulas of Elasticity in Tension | 17000 ksi | 117200 MPa |
Specific Gravity | 8.89 | 8.89 |
Thermal Conductivity | 187.0 Btu · ft/(hr · ft2 · oF) @ 68 F | 323.9 W/m · oK at 20 C |
Fabrication
Joining Technique | Suitability |
Machinability Rating | 20 |
Our Services

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