Phosphor Bronze - Variants

Variants

Further increasing the phosphorus content leads to formation of a very hard compound Cu₃P (copper phosphide), resulting in a brittle form of phosphor bronze, which has a narrow range of applications.

Around 2001, the Olin Corporation developed another phosphor bronze alloy comprising:

• Zinc – 9.9%
• Tin – 2.2%
• Iron – 1.9%
• Phosphorus – 0.03%
• Copper – 85.97%

Olin developed this new alloy for use in electrical and electronic connectors. When assessed in strictly metallurgical terms it is not true phosphor bronze, but a form of iron-modified tin brass.