Phosphor Bronze

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C51000 (CuSn5) Phosphor Bronze with a nominalcomposition of 94.80% copper and 5.0% tin, deoxidized with 0.2% phosphorus isthe most widely used of the phosphor bronzes, which offering an optimumcombinations 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 andhigher wear resistance, superior forming and spinning, resistance to stressrelaxation and good joining properties. In most cases, C51000 alloy hasadequate electrical and thermal properties for many current-carrying and heattransfer requirements.These are used forBourdon Tubes, Bellows,Perforated Sheets, Chemical Hardware, Truss Wire, Springs, Sleeve Bushings,Diaphragms, Clutch Disks, Pressure Responsive Elements, Beater Bar, TextileMachinery,

Chemical Composition

Cu

Sn

Pb

Zn

Fe

Ni

Sb

P

S

Al

Mn

Si

REMAINDER

4.20-5.80

0.05

0.3

0.1

0.03-0.35

 

Mechanical Properties

Tensile Strength (min)

Yield Strength (at .5% extention under load min)

Elongation (in 2in. or 50mm min, %)

Brinell Hardness (min)

Remarks

Ksi

MPa

Ksi

MPa

70

485

25

180

13

80

 

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