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Metal Properties

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) 68F 0.298
Thermal Expansion (in/in °Fx10 to the power of -6) 9.9 (68-572F)
Electrical Resistivity (ohms/cir mil/ft.) 68F 12.2
 
Mechanical Properties – Temper = A
Tensile Strength (psi x 10³) 70
Yield Strength (psi x 10³) 20
Elongation ( % ) 45
Hardness B75(Rockwell)
 
Mechanical Properties – Temper = H/2
Tensile Strength (psi x 10³) 90
Yield Strength (psi x 10³) 65
Elongation ( % ) 20
Hardness B90(Rockwell)
 
Mechanical Properties – Temper = H
Tensile Strength (psi x 10³) 110
Yield Strength (psi x 10³) 90
Elongation ( % ) 5
Hardness C20(Rockwell)