Bronzes are Copper-based alloys with the major alloying elementbeing Tin. They offer a combination of properties such as high strength, hardness, corrosion resistance and wear resistance.
Bronze alloy CW451K/PB102 is a Phosphor Bronze. Phosphor Bronzes are alloys of Copper and Tin. PB102 has good corrosion resistance and is known for its high fatigue strength. It also shows a good combination of strength and ductility.
Applications
CW451K/PB102 is typically used in:
~ Gears
~ Worm Gears
~ Bushes
~ Marine applications
~ Aircraft applications
~ Chemical applications
~ Springs
CW451K/PB102 is the most widely used of the wrought phosphor bronzes.
Alloy Designations
CW451K/PB102 Bronze corresponds to the following designations but may not be a direct equivalent:
UNS C51000
ISO CuSn5
Corrosion Resistance
Alloy CW451K/PB102 has good corrosion resistance, almost equivalent to that displayed by the Aluminium Bronzes.
Cold Working
Cold working response of CW451K/PB102 is excellent.
Hot Working
Hot formability of CW451K/PB102 is poor.
Heat Treatment
Solution treatment or annealing of CW451K/PB102 can be done by rapid cooling after heating to 500-700°C.
Machinability
The machinability rating of CW451K/PB102 is rated as poor at 20 compared to Brass CZ121/CW614N which is rated as 100.
Weldability
Soldering, brazing and butt welding of CW451KPB102 are rated as excellent.
Oxyacetylene welding, seam welding and coated metal arc welding are rated as fair.
Spot welding and gas shielded arc welding are rated as good.