Phosphor Bronze PB102

Known for their high corrosion resistance and strength, Phosphor bronzes are a part of the main group of engineering alloys and are chosen for their superior plating and spring properties. These alloys contain 0.4% phosphorus which is added as a deoxidising agent during the melting process and has a 3.5%-10% tin content. PB102 is the standard grade of wrought phosphor bronze.

Phosphor Bronze Applications

With an extensive range of applications in the electrical industry, phosphor bronze alloys are extensively used where the low magnetic permeability properties and wear, oxidation and corrosion resistance are an advantage.  PB102 Phosphor bronze alloys are used for electronic and electrical components, valve spindles, pump and drive shafts as well as:

  • Marine hardware
  • Connectors and Fasteners
  • Masonry fittings
  • Gears
  • Bearing bushes
  • Instrumentation components

Where cold formability, good weldability and excellent soldering properties are required, PB102 is a very suitable option. In addition to its reasonable machinability, PB102 also boasts excellent butt welding and brazing capabilities.

Phosphor Bronze Rods

We stock phosphor bronze rods in diameters ranging from ½ inch up to 2 ½ inches and we also stock PB102 phosphor bronze sheets in thicknesses ranging from 1.2mm up to 64mm.


Key Features of  Phosphor Bronze PB102

Predominantly used in electrical applications, Phosphor Bronze is also a suitable material for industrial uses.  Some of the key features include:

  • Excellent soldering qualities
  • High fatigue resistance
  • Superb spring properties
  • Low magnetic permeability
  • High standard mechanical properties
  • Superior resistance to corrosion

Mechanical Properties

Tensile Strength: 280-500N/mm²

Proof Strength: 80-410N/mm²

Elongation (%):12-25%

Physical Properties

Density: 8.85 gm/cm3

Melting Point: 1050℃ 

Specific Heat:377 J/Kg?K

Thermal Conductivity: 69 W/m?C

Coefficient of Thermal Expansion 20-300?C: 17.8 x 10-6

Electrical Conductivity 20?C: 15% IACS

 Weight%   Cu   Sn  P
Max rem 5.0%    0.2%

Phosphor Bronze PB102  is frequently used for industrial and electrical applications due to its high conductivity and excellent resistance to corrosion. Below are just some of the uses for Phosphor Bronze PB102:

  • Electrical Connectors and Switches
  • Masonry Fixings
  • Electrical Springs
  • Shafts and Gears
  • Spring Washers
  • Valve Parts
  • Marine and Chemical Hardware

Prestige Metals supplies Phosphor Bronze PB102 in a variety of formats to suit your needs. We can provide phosphor bronze sheet, round bar flat bar and square bar, all cut to length to fit your project.

Related Material Specifications

  • C51000
  • CW451K
  • NES838
  • DGS376
  • BS2874
  • EN 12163
  • CuSn5