Phosphor bronze is a copper tin alloy with a trace of phosphorus

The level of tin varies from 5 - 8% depending on the alloy.  Phosphor Bronze wire is manufactured in flat, round and square section in a full range of sizes and tempers to meet customer requirements.  Phosphor Bronze wire is also offered in tinned condition.


Phosphor Bronze Wire
Alloy code
CuSn5 CuSn6 CuSn8
European specification EN12166 CW451K CW452K CW453K
Equivalent to BS2873 PB102 PB103 PB104
Equivalent to UNS C51000 C51900 C52100


Click an alloy code to display technical information for that wire.


Go to size range and shapes in Profile Options for Phosphor Bronze Wire


Read about Packaging Options for Phosphor Bronze Wire