Copper Alloys

Oxygen-Free High Conductivity Copper (OFHC)

Application & Characteristics 
Glass-to-metal seals.
Chemical Composition (%)
Cu99.95 Min.
Physical Properties
Melting Range (°F)1981
Density (lbs/in³) 68F0.323
Thermal Expansion (in/in °Fx10 to the power of -6)9.8 (68-572F)
Electrical Resistivity (ohms/cir mil/ft.) 68F10.3
Mechanical Properties – Temper = A
Tensile Strength (psi x 10³)32
Yield Strength (psi x 10³)10
Elongation ( % )45
HardnessF40(Rockwell)
Mechanical Properties – Temper = H/2
Tensile Strength (psi x 10³)45
Yield Strength (psi x 10³)35
Elongation ( % )20
HardnessF80(Rockwell)
Mechanical Properties – Temper = H
Tensile Strength (psi x 10³)50
Yield Strength (psi x 10³)45
Elongation ( % )10
HardnessB50(Rockwell)

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