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Specifications
Copper Nickel Silicon Alloys CuNi2Si Sheet1,It has an a-structure with very fine precipitations and recommends
Copper Nickel Silicon Alloys CuNi2Si Sheet
CuNi2Si – UNS.C64700/C70250 Nickel Silicon Bronze Alloys, which is an age-hardening alloy, higher alloyed in comparison with CuNi1.5Si, for current-carrying formed parts. 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. In addition, the CuNi2Si can also be used for current-carrying formed parts and contact springs due to its good fatigue strength, forming and spring properties.
Typical Application for C64700/C70250 Nickel Silicon Bronze Alloys:
Electrical : Resistance Welding Electrodes, Motor Rotor Bar, And Resistance Welding Tips.
Fastener : Fastener parts
Industrial : Brazing Rod, Welding Rod
Available Sizes:
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.
Chemical Composition:
Ni: 1.60-2.20%
Si: 0.40-0.80%
Fe: 0.10% Max.
Zn: 0.50% Max.
Cu: Balance
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): 250
Modulus of Elasticity (10 3 MPA): 130
Note:
1). the units are based upon US Customary.
2). the typical physical properties apply to age hardened products.
International Specification:
Rods/Bars/Plates/Sheets: UNS.C64700, UNS.C70250, RWMA Class 3
European Standards: CuNi2Si, DIN 2.0855, CW111C to EN
Note:
ASTM: American Society for Testing and Materials
RWMA: Resistance Welder Manufacturers' Association
Note: Unless otherwise specified, material will be produced to DIN & RWMA.
Mechanical Properties:
The detailed Mechanical Properties will be available on request from customers.
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