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CuNi3Si – UNS.C70320 Nickel Silicon Bronze Alloys
C70320 Details & Applications:
C70320 Nickel Silicon Bronze
CuNi3Si – UNS.C70320 Nickel Silicon Bronze Alloys, which is an age-hardening alloy, higher alloyed in comparison with CuNi2Si, has higher contents of nickel and silicon in order to be able to adjust a particularly higher strength. It has an a-structure with very fine precipitations and recommends itself both for lead frames which require a high rigidity of the pins and for connector with high demands on the electrical conductivity, strength and relaxation behavior.
Typical Application for C70320 Nickel Silicon Bronze Alloys
Electrical : Resistance Welding Electrodes, Motor Rotor Bar, And Resistance Welding Tips.
Fastener : Fastener parts
Industrial : Brazing Rod, Welding Rod
Custom Diameter & Sizes, Random Mill lengths
Available Products (forms):
Round bars, Flat bars, Square bars, Rectangular bars, Hexagon bars
Custom shapes are available upon request.
Fe: 0.10% Max.
Zn: 0.50% Max.
Note: Copper plus additions equal 99.50% minimum.
Typical Physical Properties:
Specific Gravity: 8.80-8.90 g/cm3
Coefficient of Thermal Expansion per °C: 17 x 10-6 /K (20-300°C)
Electrical Conductivity (% IACS): 38 (22 Ms/m)
Thermal Conductivity (W/mk): 190
Modulus of Elasticity (10 3 MPA): 135
1). the units are based upon US Customary.
2). the typical physical properties apply to age hardened products.
Rods/Bars/Plates/Sheets: UNS.C70320, RWMA Class 3
European Standards: CuNi3Si, DIN 2.0855, CW112C to EN
ASTM: American Society for Testing and Materials
RWMA: Resistance Welder Manufacturers' Association
Note: Unless otherwise specified, material will be produced to DIN & RWMA.
CHECK the ALB Copper Alloys feature on specialty copper alloys for Automotive industry.
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