Trademark Alloys


CHROMZIRC-328 is a copper chromium zirconium alloy with the outstanding electrical and heat transfer properties of copper but without the drawbacks of being soft and ductile.

The addition of a small amount of chromium ensures its high strength, especially after suitable heat treatment that achieves its good mechanical properties.

CHROMZIRC-328 (copper chromium zirconium) is predominantly used in resistance welding equipment and in the field of electrical engineering.

Related Specifications of CHROMZIRC-328

  • CC102
  • C18150
  • CW106C
  • BS4577 A/2/2
  • BS2874
  • ISO 5182
  • 2.1293
  • CuCr1Zr
  • CuCrZr (DE)

Nominal Composition of CHROMZIRC-328

Cu rem, Cr 1.0%, Zr 0.1%

Mechanical Properties of CHROMZIRC-328

Ultimate Tensile Strength (N/mm²) Proof Stress (N/mm²) Elongation (%) Hardness (HB)
450 400 20 140HV

Key Features of CHROMZIRC-328

  • High electrical conductivity
  • High thermal conductivity
  • High strength
  • Resistance to softening at elevated temperatures

Applications of CHROMZIRC-328

Electrical | Switchgear components, circuit breaker parts, rotating electrical machinery; electrical and thermal conductors

Chemical processing | Turbine generators, current-carrying arms and shafts for process plants

Other | Resistance welding, electrodes, shafts, electrode holders, seam welding wheels and flash or butt welding dies

Columbia Metals – a leading supplier of CHROMZIRC-328

With decades of experience and a huge range of stock, Columbia Metals is an industry leader in the supply of CHROMZIRC-328 and other high quality specialist engineering alloys.

To buy or learn more about CHROMZIRC-328 contact us now, or fill in the enquiry form on the right hand side and we will be in touch shortly.

  Related Specifications Mechanical Properties
Alloy Name BS UNS BS EN Others Ultimate Tensile Strength N/mm² Minimum Yield Strength N/mm² Elongation % Hardness HB  
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