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Phosphor bronze

  • Phosphor bronze

Phosphor bronze is a Cu-Sn-based alloy with added P to improve tensile strength, hardness, and in particular, bearing performance.

Symbol Previous symbol Alloy base Characteristics Application example
CAC502A PBC2 Cu-Sn-P-based Good corrosion resistance and wear resistance Gears, worm wheels, bearings, sleeves, impellers, wear-resistant plates, general and mechanical parts
CAC502B PBC2B
CAC502C PBC2C
CAC503A Cu-Sn-P-based High hardness and good wear resistance Sliding parts, hydraulic cylinders, sleeves, gears, and wear-resistant plates
CAC503B PBC3B
CAC503C PBC3C
PBC+Ni1.5 Cu-Sn-P-Ni-based Higher mechanical strength than JIS-conforming phosphor bronze Worm wheels and bearings
PBC+Ni3.0
PBC+Pb1.0 Cu-Sn-P-Pb-based Machinability is better than JIS phosphor bronze system Wear-resistant plates and bearings

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