C54400 Phosphor Bronze B-2
C54400 Phosphor Bronze B-2
At conexmetals.com, we supply high-quality C54400 Phosphor Bronze B-2 – a premium wrought bronze alloy that contains copper, tin, lead, and phosphorus. This alloy offers outstanding machinability, wear resistance, and excellent mechanical properties, making it a preferred choice for demanding electrical and industrial applications.
Chemical Composition
| Element | Min (%) | Max (%) |
|---|---|---|
| Copper (Cu + Named Elements) | 99.5 (min) | Rem |
| Lead (Pb) | – | 4.0 |
| Tin (Sn) | 3.0 | 4.5 |
| Zinc (Zn) | – | 4.5 |
| Iron (Fe) | – | 0.10 |
| Phosphorus (P) | 0.01 | 0.50 |
Mechanical Properties (Typical at 20°C)
| Form | Temper | Code | Tensile Strength (ksi) | Yield Strength 0.5% (ksi) | Elongation (%) | Rockwell B |
|---|---|---|---|---|---|---|
| Flat Products | 1/2 Hard | H02 | 58 | 40 | 24 | 68 |
| Flat Products | Hard | H04 | 60 | 45 | 20 | – |
| Flat Products | Spring | H08 | 98 | 80 | 3 | – |
| Rod | Hard | H04 | 68 | 57 | 20 | 80 |
Physical Properties
| Property | Value |
|---|---|
| Melting Point (Liquidus) | 1830°F |
| Melting Point (Solidus) | 1700°F |
| Density @ 68°F | 0.32 lb/cu in |
| Specific Gravity | 8.89 |
| Electrical Conductivity | 19% IACS |
| Thermal Conductivity | 50 Btu/sq ft/ft/hr/°F |
| Thermal Expansion (68–572°F) | 9.6 × 10⁻⁶ /°F |
| Modulus of Elasticity | 15000 ksi |
| Modulus of Rigidity | 5600 ksi |
Fabrication & Machining
| Process | Suitability |
|---|---|
| Soldering | Excellent |
| Brazing | Good |
| Oxyacetylene Welding | Not Recommended |
| Gas Shielded Arc Welding | Not Recommended |
| Coated Metal Arc Welding | Not Recommended |
| Spot Welding | Not Recommended |
| Seam Welding | Not Recommended |
| Butt Welding | Fair |
| Cold Working | Good |
| Machinability | 80% Rating |
Thermal Treatment
| Process | Min Temp (°F) | Max Temp (°F) |
|---|---|---|
| Annealing | 900 | 1250 |
Applications
C54400 Phosphor Bronze B-2 from conexmetals.com is commonly used in:
Electrical Connectors – Excellent machinability, high strength, and stress corrosion resistance.
Bearings & Bushings – Superior wear resistance and good frictional performance.
Gears & Pinions – Fatigue resistance and moderate strength for reliable operation.
Screw Machine Products – Smooth machining and consistent dimensional accuracy.
Shafts, Sleeve Bearings & Thrust Washers – Corrosion resistance and dependable performance under load.
Valve Parts – Long life, corrosion resistance, and excellent wear properties.
Specifications
| Form | Standard | Description |
|---|---|---|
| Bar / Rod / Shapes | ASTM B139/B139M | Phosphor Bronze Rod, Bar & Shapes |
| Plate / Sheet / Strip | ASTM B103/B103M | Phosphor Bronze Plate, Sheet, Strip & Rolled Bar |
| General | SAE J461 / J463 | Wrought & Cast Copper Alloys |
| Bearings & Bushings | MIL-B-13501 | Bearings & Bushings – Brass & Bronze Machined or Formed |
| Strip (Cold Rolled) | AMS 4520 | Bronze Strip, Cold Rolled, Half Hard |
