Copper Alloys

Phosphor Bronze Grade A

Application & Characteristics 
Bourdon tubing and spirals, bellows, fasteners, sleeve bushings and electrical parts. Resists corrosion and fatigue due to flexing.
Chemical Composition (%)
Cu 95; Sn 5; P 0.20
Physical Properties
Melting Range (°F)1750 – 1920
Density (lbs/in³) 68F0.32
Thermal Expansion (in/in °Fx10 to the power of -6)9.9
Electrical Resistivity (ohms/cir mil/ft.) 68F69.1
Mechanical Properties – Temper = A
Tensile Strength (psi x 10³)47
Yield Strength (psi x 10³)19
Elongation ( % )64
Mechanical Properties – Temper = H/2
Tensile Strength (psi x 10³)68
Yield Strength (psi x 10³)55
Elongation ( % )28
Mechanical Properties – Temper = H
Tensile Strength (psi x 10³)81
Yield Strength (psi x 10³)75
Elongation ( % )10

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