Phosphor bronze alloy is a alloys of copper with around 3.5 to 10% of tin and a significant phosphorus content of up to 1%. The phosphorus is required as a deoxidizing agent during melting procedure. If the phosphorus content is further increased, then it leads to the formation of a hard compound copper phosphide. Phosphor bronze is majorly used for springs and in various other applications where resistance to fatigue, wear and chemical corrosion is required or necessary. It at times is also used in acoustic instrument strings including acoustic guitars, mandolins and more.