• Dali Electronics

Copper Chromium Zirconium

CuCr1Zr – UNS.C18150 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. The addition of 0.1% zirconium (Zr) and 1.0% chromium (Cr) to copper results in a heat treatable alloy which may be solution treated and subsequently aged to produce these desirable properties. The Rod is usually supplied from the mill in the fully aged and drawn condition so no extra heat treatment is required by the fabricator.

The softening temperature of properly heat treated 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. C18150 is a precipitation hardening copper-base-alloy. In the heat-treated condition, this alloy retains the mechanical properties together with a good ductility in the range of 300-500°C. High electrical conductivity and high mechanical properties are attributes of this versatile alloy.  Therefore, many evidences shows that C18150 can provide less sticking and resisting deformation longer than its C18200 counterpart in some specific situations.

Typical Application for C18150 Chromium Zirconium Copper Alloys:
  • Electrical Industry: Resistance Welding Electrodes, Circuit Breaker Switches
  • Consumer: Rod Extensions, Pencil-type, Light Soldering Guns, Tips
  • Industrial: Welding Wheels, Tips and Rod extensions for resistance seam and spot welding
Other Applications:-

Resistance welding tips, Electrode caps for the automotive industry, Tong arms for welding robots, Electrode holders, Parts for energy engineering, Press parts, Widely used for automobile and spaceship stencil plate and contact welding stainless steel. Ideal electrode material for seal welder, high-voltage switch welding material and circuit breaker material, best high-strength, high conductivity and high melting-point material used for Continuous crystallization device in metallurgical trade and widely used for IC frame wire material.

Physical Properties

DensityMetricEnglishComments
8.90 g/cc0.322 lb/in³

Mechanical Properties

DensityMetricEnglishComments
Hardness, Rockwell B8282
Hardness, Brinell152152HB 10
Tensile Strength, Ultimate520 MPa75400 psi
Tensile Strength, Yield466 MPa67600 psi0.5%
Elongation at Break20.0 %20.0 %
Modulus of Elasticity120 GPa17400 ksi

Electrical Properties

DensityMetricEnglishComments
Electrical Resistivity0.00000196 ohm-cm0.00000196 ohm-cm86% I.A.C.S.

Thermal Properties

DensityMetricEnglishComments
CTE, linear17.0 µm/m-°C @Temperature 20.0 °C9.44 µin/in-°F @Temperature 68.0 °F
Specific Heat Capacity0.380 J/g-°C0.0908 BTU/lb-°F
Thermal Conductivity320 W/m-K2220 BTU-in/hr-ft²-°F

Component Elements Properties

DensityMetricEnglishComments
Chromium, Cr1.0 %1.0 %
Copper, Cu98.7 – 98.9 %98.7 – 98.9 %
Other, total<= 0.20 %<= 0.20 %
Zirconium, Zr0.10 %0.10 %

Grade of Copper Chromium Zirconium (Balance Copper)

ASTM/UNSAlloyChromiumZirconiumBerylliumCobalt
C17500CuZr0.4-0.72.4-2.7
C18200CuCr10.6-1.2
C18150CuCr1Zr / CuCrZr0.5-1.50.05-0.25

For Any Inquiries Contact:-

Mr. Rohan Kamble (Sales Engineer)

Call 8928403617/18 or Email : becu@domadia.com

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