Phosphor Bronze PB 102 (UNS C51000)

Technical Data Sheet

Chemical Composition Limits
Weight % Sn Pb Cu P Zn
PB 102
4.5 / 5.5 0.02 max Remainder 0.02 / 0.4 0.3 max

PB102 is a Phosphor Bronze that is mainly Copper. PB102 is the most widely used of the wrought phosphor bronzes, this is due to PB102's high fatigue strength and ductility. PB102 is particularly good when cold formability combined with good mechanical properties are required. PB102 is used in Gears, Worm Gears, Bushes, Springs and Marine, Aircraft and Chemical applications.

Typical Mechanical Properties


0.2 % Proof Stress (N/mm²)

Tensile Strength (N/mm²) Elongation 50mm (%) Hardness (HV)
Pb102 520 570 4 180
The table shows material as cold rolled, extra hard

PB 102 is available in Sheet, Strip, Plate, Tube, Rod, Bar and Forgings. For all stock availability contact Sales.

Similar Specifications

BS 2870 (1980) and BS 2875 (1969) Superceded by BSEN 1652, BSEN 1653 and BSEN 1654 (1998)
BS 2873 (1969) Superceded by BSEN 12166 (1998)
BS 2874 (1986) and BS 2872 Superceded by BSEN 12167, BS EN 12164 and BS EN 12163 (1998)
BS 2871 Superceded by BSEN 1057 (1996)
UNS C51000 and UNS C54400
CDA 510
NES 838 and DEF STAN 02-838

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Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.