Copper Alloys

Cupro Nickel 30%

Application & Characteristics 
Highly resistant to corrosive fluids, particularly alkalis. Frequently used for fine-wire connectors and electrical contacts.
Chemical Composition (%)
Cu 68.9; Ni 30; Fe 0.5; Mn 0.6
Physical Properties
Melting Range (°F)2140 – 2260
Density (lbs/in³) 68F0.323
Thermal Expansion (in/in °Fx10 to the power of -6)9
Electrical Resistivity (ohms/cir mil/ft.) 68F225
Mechanical Properties – Temper = A
Tensile Strength (psi x 10³)55
Yield Strength (psi x 10³)20
Elongation ( % )40
HardnessB35(Rockwell)
Mechanical Properties – Temper = H/2
Tensile Strength (psi x 10³)75
Yield Strength (psi x 10³)65
Elongation ( % )15
HardnessB65(Rockwell)
Mechanical Properties – Temper = H
Tensile Strength (psi x 10³)90
Yield Strength (psi x 10³)80
Elongation ( % )8
HardnessB85(Rockwell)

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