Copper Alloys

Beryllium Copper Alloy 25

Application & Characteristics 
Used for high strength and electrical conductivity and its stability as a spring material.
Chemical Composition (%)
Cu96.8 Min; Be 1.80-1.90; Co 0.18-0.30; Ni & Co 0.20 Min; Ni, Co & Fe 0.60 Max
Physical Properties
Melting Range (°F)1600 – 1800
Density (lbs/in³) 68F0.298
Thermal Expansion (in/in °Fx10 to the power of -6)9.9 (68-572F)
Electrical Resistivity (ohms/cir mil/ft.) 68F12.2
Mechanical Properties – Temper = A
Tensile Strength (psi x 10³)70
Yield Strength (psi x 10³)20
Elongation ( % )45
Mechanical Properties – Temper = H/2
Tensile Strength (psi x 10³)90
Yield Strength (psi x 10³)65
Elongation ( % )20
Mechanical Properties – Temper = H
Tensile Strength (psi x 10³)110
Yield Strength (psi x 10³)90
Elongation ( % )5

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