CuSn5 - UNS.C51000 Phosphor Bronze Strips

C51000 Details & Applications

CuSn5 - UNS.C51000 Phosphor Bronze Alloys, with a nominal composition of 94.80% copper and 5.0% tin, deoxidized with 0.2% phosphorus is the most widely used of the phosphor bronzes, which offering an optimum combinations of such engineering properties as high strength and ductility, superior fatigue and spring characteristics, excellent corrosion resistance, durability for severe service, good bearing qualities with low friction and higher wear resistance, superior forming and spinning, resistance to stress relaxation and good joining properties. In most cases, C51000 alloy has adequate electrical and thermal properties for many current-carrying and heat transfer requirements.

C51000 Alloy typical applications for phosphor bronze include bearings, bushings, gears, pinions, shafts, thrust washers and valve parts.

Chemical Composition for C51000 Phosphor Bronze Alloys

Sn: 4.50-5.50%

P:  0.03-0.35%

Zn: 0.30% Max.

Fe: 0.10% Max.

Pb: 0.05% Max.

Zn: Balance

Note: Copper plus additions equal 99.50% minimum.