PB103 phosphor bronze containing 6% tin, available primarily in sheet and strip. The tin content, which is higher than in PB102, gives the alloy improved wear resistance and higher strength properties. PB103 is also renowned for its excellent tarnish resistance and corrosion resistance to a wide range of waters and chemicals in environments such as paper and textile manufacturing plants.

Related Specifications of PB103

  • C51900
  • CW452K
  • BS2870
  • 2.1020
  • NF A51-108
  • CuSn6
  • CuSn6P (FR)

Nominal Composition of PB103

Cu rem, Sn 7.0%, P 0.2%

Mechanical Properties of PB103

Ultimate Tensile Strength (N/mm²) Proof Stress (N/mm²) Elongation (%) Hardness (HB)
460-525 380-440 12 150-170HV

Key Features of PB103

  • High strength
  • Very good corrosion resistance
  • Good wear resistance
  • Good spring properties

Applications of PB103

Offshore & marine | Marine hardware and instrument components

Power generation | Electrical springs and contacts

Other | Gaskets, instrument components, architectural and decorative purposes, components in paper and textile manufacturing plants, wire, flanges and masonry fixings

Columbia Metals – a leading supplier of PB103

With decades of experience and a huge range of stock, Columbia Metals is an industry leader in the supply of PB103 and other high quality specialist engineering alloys.

To buy or learn more about PB103 contact us now, or fill in the enquiry form on the right hand side and we will be in touch shortly.

  Related Specifications Mechanical Properties
Alloy Name BS UNS BS EN Others Ultimate Tensile Strength N/mm² Minimum Yield Strength N/mm² Elongation % Hardness HB  
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