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Typical Application for UNS.C18200 Chromium Copper Alloys:

Electrical Industry: Cable, Connector, Thermal Conductors, Switch Gears, Electrical Connector, Circuit Breaker Parts, Switch Contacts, Electric Motor and Generator Components, Parts for electronic Devices
Consumer: Rod Extensions, Pencil-type, Light Soldering Guns, Tips
Industrial: Resistance Welding Machine Electrodes, Resistance Welding Equipment, Plastic Mold Components, Flash Welding Electrodes, Electrode Holder Jaws, Seam Welding Wheels, Wear Plates on Heavy Equipment, Heat Sinks, Spot Welding Tips, Molds

Available Sizes:
Custom Diameter & Sizes, Random Mill lengths

Available Products (forms):
Round bars, Flat bars, Square bars, Rectangular bars, Hexagon bars, Plates
Custom shapes are available upon request.

Chemical Composition:

Cr: 0.60-1.20%
Cu: Balance
Note: Copper plus additions equal 99.50% minimum.

Typical Physical Properties:

Density at 68°F: 0.321 Lbs./In.3
Specific Gravity: 8.89
Melting Point (Liquidus): 1075°C (1967°F)
               (Solidus): 1070°C (1958°F)
Coefficient of Thermal Expansion per °F: 9.8 x 10-6 (77-212°F)
Electrical Conductivity at 68°F (volumetric): 80% IACS (solution heat treated, cold worked 50% minimum and aged)
Thermal Conductivity Btu/ft.2/ft./hr./°F at 68°F: 187 (solution heat treated, cold worked 50% minimum and aged)
Modulus of Elasticity - Tension: 17,000 ksi

Note:
1). the units are based upon US Customary.
2). the typical physical properties apply to age hardened products.

International Specification:

Rods/Bars/Plates/Sheets: UNS.C18200, RWMA Class 2, CDA18200, ISO5182-1991

European Standards: CuCr, DIN 2.1291, CW105C to EN

Note: Unless otherwise specified, material will be produced to RWMA Grade.

Mechanical Properties:

The detailed Mechanical Properties will be available on request from customers.

Most Commonly Temper Used: