CC102 / CW106C Copper Chromium Zirconium

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CC102 / CW106C is a high copper alloy containing a small amount of chromium & zirconium that improve its mechanical performance. Copper on its own has outstanding electrical and heat transfer properties but is soft and ductile. However the small additions of these elements followed by a suitable heat treatment significantly increases strength while retaining high conductivity values.

This gives a high performance alloy which has traditionally been used for resistance welding equipment, switchgear components, circuit breakers parts, rotating electrical machinery, current carrying arms and shafts, switch contacts, heat sinks, MIG welding contact tubes, soldering iron tips, and many other electrical and thermal conductors requiring greater strength than copper.

A desirable combination of low wear, long life, and efficient performance are provided to designers as a result of its high electrical and thermal conductivity, high strength levels and a retention of mechanical properties at elevated temperatures (up to 525?C). This ensures maximum retention of mechanical properties under practical working conditions. 

Related Specifications

CC102

CW106C

BS4577 A/2/2

CuCr1Zr

C18150

DIN 17666 – WN 2.1293

Composition

Copper                                               

Rem

Chromium

0.5-1.2%

Zirconium

0.03-0.30%

Total Others

0.2% max

Mechanical Properties (Specification Minima <25mm)

Ultimate Tensile Strength

410 N/mm2

Elongation     

15%

Hardness

140 HV

 Key Features

  • Very High Electrical Conductivity
  • Good mechanical strength and toughness
  • Very Good Thermal Conductivity
  • Resistance to Softening up to 525?C

Typical Physical Properties

Melting Point

1080°C

Density

8.89 g/cm3

Coefficient of thermal Expansion

16.45 x 10-6 per °C

Thermal Conductivity

300 W/m °C

Electrical Conductivity

75 - 85% IACS

Modulus of Elasticity

117200 N/mm2

Fabrication Properties

Hot Formability

Good

Cold Formability

Fair

Machinability Rating

25% (Free cutting brass = 100)

 Joining Methods

Soldering                          

Good

Brazing                            

Fair

Gas Shielded Arc Welding    

Fair

Resistance Welding

Fair

Typical Applications

The main applications for CC102 / CuCrZr are for resistance welding shafts, electrodes, electrode holders, seam welding wheels, flash or butt welding dies, and which must have a high electrical conductivity to conduct the heat away from the weld and be strong enough to withstand the mechanical pressure required for welding. But the copper chromium zirconium is also used for switchgear components, circuit breaker parts, rotating electrical machinery, electrical and thermal conductors requiring greater strength of copper.

This technical information is given by Holme Dodsworth Metals without charge and the user shall employ such information at their own discretion and risk. For more detailed technical advice on temper selection, fabrication, joining, machining, physical and mechanical data please contact us as space does not permit the listing of every feature of the material.

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