Product Description

Phosphor Bronzes between 0.5 and 11 % tin and 0.01 to 0.35 % phosphorous. The addition of tin increases the corrosion resistance and strength of the alloy. The phosphorous increases the wear resistance and stiffness of the alloy. Phosphor Bronzes have superb spring qualities, high fatigue resistance, excellent formability and solderability, and high corrosion resistance. They are primarily used for electrical products, other uses include corrosion resistant bellows, diaphragms, and spring washers. Leaded phosphor bronzes combine good strength and fatigue resistance with good machinability, high wear resistance and corrosion resistance.

Chemistey Typical

COPPER TIN LEAD IRON ZINC PHOSPHORUS

C51000 Balance 4.2-5.8 0.05 max 0.10 max 0.30 max 0.03-0.35

C51100 Balance 3.5-4.9 0.05 max 0.10 max 0.30 max 0.03-0.35

C52100 Balance 7.0-9.0 0.05 max 0.10 max 0.20 max 0.03-0.35

C54400 Balance 3.5-4.5 3.0-4.0 0.10 max 1.5-4.5 0.01-0.35

Physical Properties

Typical Density: 0.318 - 0.321 lb/in3, 8.80 - 8.88 g/cm3

Electrical Conductivity: (% IACS at 68°F 20°C, annealed): 13 - 20%

Thermal Conductivity: BTU-in/hr-ft2-°F

At 68°F: 36 - 50

Mean Coefficient of Thermal Expansion: µin/in-°F

68 - 572 °F: 9.6 - 10.1

Modulus of Elasticity: KSI

16 x 103 in tension

Applications

Electrical switch springs, Fuse clips, Electrical connectors, Lock washers, Bearing plates, Gears, Thrust washers, Springs.

Product Display

Product Packaging