PB102 / CW451K - Phosphor Bronze

PB102 / CW451K is the most widely used grade of wrought phosphor bronze in the UK. It contains additions of ~5% Tin and up to 0.4% phosphorus to enhance its wear resistance, mechanical strength and stiffness and corrosion resistance.

The 5% tin containing alloy offers superb spring qualities, a high fatigue resistance, excellent cold forming properties and a corrosion resistance almost equivalent to Aluminium Bronzes in many atmospheric conditions.

PB102 / CW451K also offers a reasonable machinability (20-25% that of free machining brass = 100%), with an excellent soldering, brazing and butt welding capability. It can also be joined reasonably easily using spot welding and gas shielded arc welding, seam welding and coated metal arc welding.

 Related Specifications

Mechanical Properties (specification minima 18mm to 40mm dia)

Key Features

• Good mechanical properties
• Excellent cold forming properties
• High wear resistance
• Very good corrosion resistance
• Easily joined by brazing and welding
• Low coefficient of friction
• Good spring properties

Typical Physical Properties

 Fabrication Properties

 Joining Methods

 

Typical Applications

Due to its versatility the CW451K / PB102 is utilised in most industrial sectors with some typical applications including marine and chemical hardware, fasteners, pump and valve trim, bushes, bearings, electrical springs, contacts, connectors and switches, worm gears, springs, shafts, flanges, wear guides, architectural and decorative components, lock washers, spring washers and masonry fixings.

This technical information is given by John Hood & Co.without charge and the user shall employ such information at his own discretion and risk. For more detailed technical advice on temper selection, fabrication, joining, machining, physical and mechanical data please contact us as space does not permit the listing of every feature of the material.