Copper Alloys
Phosphor Bronze Grade A
| Application & Characteristics | |
|---|---|
| Bourdon tubing and spirals, bellows, fasteners, sleeve bushings and electrical parts. Resists corrosion and fatigue due to flexing. | |
| Chemical Composition (%) | |
| Cu 95; Sn 5; P 0.20 | |
| Physical Properties | |
| Melting Range (°F) | 1750 1920 |
| Density (lbs/in³) 68F | 0.32 |
| Thermal Expansion (in/in °Fx10 to the power of -6) | 9.9 |
| Electrical Resistivity (ohms/cir mil/ft.) 68F | 69.1 |
| Mechanical Properties Temper = A | |
| Tensile Strength (psi x 10³) | 47 |
| Yield Strength (psi x 10³) | 19 |
| Elongation ( % ) | 64 |
| Hardness | F73(Rockwell) |
| Mechanical Properties Temper = H/2 | |
| Tensile Strength (psi x 10³) | 68 |
| Yield Strength (psi x 10³) | 55 |
| Elongation ( % ) | 28 |
| Hardness | B78(Rockwell) |
| Mechanical Properties Temper = H | |
| Tensile Strength (psi x 10³) | 81 |
| Yield Strength (psi x 10³) | 75 |
| Elongation ( % ) | 10 |
| Hardness | B87(Rockwell) |
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