CuZr – UNS.C15000 Zirconium Copper is an excellent and unique copper alloy with high electrical conductivity, hardness, and ductility, moderate strength, and excellent resistance to softening at elevated temperatures.  The addition of 0.15% zirconium (Zr) to copper results in a heat treatable copper alloy which may be solution treated and subsequently aged to produce these desirable properties.  Rod is 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 properly heat treated C15000 rod exceeds 500°C as compared to unalloyed, pure copper which softens at 200°C and silver bearing coppers which soften at 350°C.

Electrical Industry: Resistance Welding Electrodes, Circuit Breaker Switches, Stud Bases for Power Transmitters, Rectifiers, Diodes, Switches, Commutators
Consumer: Rod Extensions, Pencil-type, Light Soldering Guns, Tips
Industrial: Connectors, Solderless Wrapped, Welding Wheels, Resistance Welding Tips

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.

Zr: 0.15-0.20%
Cu: Balance
Note: Copper plus additions equal 99.90% minimum.

Typical Physical Properties:

Density at 68°F: 0.321 Lbs./In.3
Specific Gravity: 8.89
Melting Point (Liquidus): 1080°C (1976°F)
               (Solidus): 980°C (1796°F)
Coefficient of Thermal Expansion per °F: 9.4 x 10-6 (68-212°F)
9.8 x 10-6 (68-572°F)
11.2 x 10-6 (68-1200°F)
Electrical Conductivity at 68°F (volumetric): 85-95% IACS (aged and drawn)
                                               55-72% IACS (solution annealed)
Thermal Conductivity Btu/ft.2/ft./hr./°F at 68°F: 212
Modulus of Elasticity - Tension: 18,700 ksi

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

Rods/Bars/Plates/Sheets: UNS.C15000, RWMA Class 1, SAE J461,463; ISO5182-1991

European Standards: CuZr, DIN 2.1580, CW120C to EN

Note:
ASTM: American Society for Testing and Materials
SAE: Society of Automotive Engineers
RWMA: Resistance Welder Manufacturers' Association
Note: Unless otherwise specified, material will be produced to ISO & RWMA.

Mechanical Properties:

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