An excellent material for use in the manufacture of bearings, C54400 B-2 Phosphor Bronze is also extremely machinable. When annealed, the metal can be bent, formed, blanked and stamped. Like other phosphor bronze alloys, it is known for its toughness, strength, low coefficient of friction and fine grain. The alloy is also resistant to fatigue, wear and chemical corrosion.
Electrical Connectors
Bushings, Gears, Pinions, Screw Machine Products, Thrust Washers, Valve Parts, Sleeve Bearings, Thrust Bearings, Bearings, Shafts
Cu% | Sn% | Pb% | Zn% | Fe% | P% |
|---|---|---|---|---|---|
| Remainder | 3.50-4.50 | 3.00-4.00 | 1.50-4.50 | 0.10 | 0.01-0.50 |
Mechanical - H04 Hard Temper: 1/4" to 1/2" Rd and Hex | ||
|---|---|---|
| Tensile Strength, min | 60 ksi | 415 MPa |
| Yield Strength @ .5% ext under load min | N/A | N/A |
| Elongation in 2 in. or 50 mm min, % | 10 | |
| Brinell Hardness | N/A | |
| Machinability Rating | 80% | |
| Mechanical - H04 Hard Temper: Over 1/2" to 1" Inclusive Rd and Hex | ||
|---|---|---|
| Tensile Strength, min | 55 ksi | 380 MPa |
| Yield Strength @ .5% ext under load min | N/A | N/A |
| Elongation in 2 in. or 50 mm min, % | 12 | |
| Brinell Hardness, min | N/A | |
| Machinability Rating | 80% | |
| Mechanical - H04 Hard Temper: Over 1" Rd and Hex | ||
|---|---|---|
| Tensile Strength, min | 50 ksi | 345 MPa |
| Yield Strength @ .5% ext under load min | N/A | N/A |
| Elongation in 2 in. or 50 mm min, % | 15 | |
| Brinell Hardness, min | N/A | |
| Machinability Rating | 80% | |
| US Customary | Metric | |
|---|---|---|
| Melting Point-Liquidus | 1830 °F | 999 °C |
| Melting Point-Solidus | 1700 °F | 927 °C |
| Density | 0.320 lb/in 3 @ 68 °F | 8.89 gm/cm 3 @ 20 °C |
| Specific Gravity | 8.890 | 8.89 |
| Electrical Resistivity | 54.60 ohms-cmil/ft @ 68 °F | 9.08 microhm-cm @ 20 °C |
| Electrical Conductivity | 19% IACS @ 68 °F | 0.111 MegaSiemens/cm @ 20 °C |
| Thermal Conductivity | 50 Btu/sq ft/ft hr/°F @ 68 °F | 86.5 W/m @ 20 °C |
| Coefficient of Thermal Expansion | 9.6 ⋅ 10-6 per °F (68-392 °F) | 16.6 ⋅ 10-6 per °C (20-200 °C) |
| Specific Heat Capacity | 0.09 Btu/lb/°F @ 68 °F | 377.1 J/kg @ 293 °C |
| Modulus of Elasticity in Tension | 15000 ksi | 103420 MPa |
| Magnetic Permeability | 5600 ksi | 38610 Mpa |
| Joining Technique | Suitability |
|---|---|
| Soldering | Excellent |
| Brazing | Good |
| Oxyacetylene Welding | Not Recommended |
| Gas Shielded Arc Welding | Not Recommended |
| Coated Metal Arc Welding | Not Recommended |
| Spot Weld | Not Recommended |
| Seam Weld | Not Recommended |
| Butt Weld | Fair |
| Capacity for being Cold Worked | Good |
