Phosphor Bronze Springs
China Alloy Springs manufactures phosphor bronze springs, including phosphor bronze compression springs for many applications. Phosphor Bronzes contains copper, tin and phosphorous. The addition of tin increases the corrosion resistance and strength of the alloy. The phosphorous increases the wear resistance and stiffness of the alloy. Leaded phosphor bronzes combine good strength and fatigue resistance with good machinability.
| Technical Specification | Phosphor Bronze |
|---|---|
| Nominal Composition |
Sn: 4.5 - 5.5 P: 0.02 - 0.40 Cu: Balance |
| Density |
0.320 lb./in3 |
| Modulus of Elasticity (E) |
15x 106 psi |
| Modulus of Rigidity (G) |
6.3 x 106 psi |
| Coefficient of Expansion |
9 µin/in.-°F (200°F) |
| Electrical Resistivity |
5.2 µΩ.in |
| Thermal Conductivity |
68 Btu/(hr/ft2/in/°F) |
| Min Size |
.003 in (0.080 mm) |
| Max Size |
2.5 in |
| Max Temp |
95oC (200oF) |
| Uses of Phosphor Bronze Springs |
They are widely used in spring washers as it has high wear resistance and corrosion resistance |
