Phosphor Bronze Alloy C54400
Copper Alloy No. C54400
Phosphor Bronze B-2 , ASTM B 139 CDA 544
Chemical Composition % by weight
Phosphor Bronze B-2 , ASTM B 139 CDA 544
Chemical Composition % by weight
| Element | Nominal | Minimum | Maximum |
| Copper | 88 | Rem. | Rem. |
| Lead | 4 | 3.5 | 4.5 |
| Iron | - | - | .10 |
| Tin | 4 | 3.5 | 4.5 |
| Zinc | 4 | 1.5 | 4.5 |
| Phosphorus | - | .01 | .50 |
Applications
Bearings, bushings, gears, pinions, shafts, thrust washers, valve parts.
Common Fabrication Processes
Blanking, drawing, forming and bending, machining, shearing, stamping.
Mechanical Properties
Typical for 1" dia. Rod Hard (25%) Temper
| Hardness* | Rockwell B Scales | 80 |
| Tensile Strength** | KSI | 68 |
| Yield Strength** (.5% EAU) | KSI | 57 |
| Elongation** | % in 2 inch | 20 |
**Test values are nominal approximations and depend on specimen size and orientation.
Physical Properties
| Thermal Conductivity | BTU/ (sq ft-ft-hr-F) | 50 |
| Specific Heat | BTU/lb/ºF @ 68F | .09 |
| Thermal Expansion | Per °F from 68 F to 572 F | .0000096 |
| Density | lb/cu in @ 68 F | .321 |
| Electrical Conductivity* (Annealed) | % IACS @ 68 F | 19 |
| Modulus of Elasticity (Tension) | KSI | 15,000 |
*Volume basis
Fabrication Properties
| Capacity for being cold worked | Good |
| Capacity for being hot formed | - |
| Suitability for being joined by: | Soldering/Excellent |
| Brazing/Good | |
| Oxyacetylene Welding/Not Recommended | |
| Gas Shielded Arc Welding/Not Recommended | |
| Coated Metal Arc Welding/Not Recommended | |
| Resistance Welding | Spot/Not Recommended |
| Seam/Not Recommended | |
| Butt/Fair |