CC102 / CW106C Copper Chromium Zirconium
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.