C53400 Alloy, C534 Phosphor bronze
C53400 Alloy, C534 Phosphor bronze
At conexmetals.com, we supply C53400 Phosphor Bronze (C534 Alloy) – a high-performance wrought bronze alloy composed primarily of copper, tin, and phosphorus. This alloy is designed to deliver excellent wear resistance, superior corrosion resistance, high fatigue strength, and outstanding machinability, making it a preferred choice for electrical components, precision industrial parts, and mechanical systems.
C53400 is often used in bearings, bushings, gears, valves, and electrical connectors, where long-term reliability and dimensional stability under mechanical stress are critical.
Chemical Composition
| Element | Min (%) | Max (%) |
|---|---|---|
| Copper (Cu + Named Elements) | 99.5 (min) | Rem |
| Tin (Sn) | 6.0 | 7.0 |
| Lead (Pb) | – | 0.35 |
| Zinc (Zn) | – | 1.0 |
| Iron (Fe) | – | 0.15 |
| Phosphorus (P) | 0.03 | 0.35 |
Notes:
Phosphorus increases strength and wear resistance.
Tin improves corrosion resistance and hardness.
Lead enhances machinability without compromising strength.
Mechanical Properties (Typical at 20°C)
| Form | Temper | Code | Tensile Strength (ksi) | Yield Strength 0.5% (ksi) | Elongation (%) | Rockwell B |
|---|---|---|---|---|---|---|
| Rod / Wire | Half Hard | H02 | 55 | 38 | 28 | 65 |
| Rod / Wire | Hard | H04 | 70 | 55 | 20 | 80 |
| Flat Products | Spring | H08 | 95 | 80 | 4 | 90 |
Insights:
High tensile strength ensures long service life in high-stress applications.
Moderate elongation provides flexibility while maintaining shape.
Suitable for both dynamic and static load conditions.
Physical Properties
| Property | Value |
|---|---|
| Melting Point (Liquidus) | 1800–1830°F |
| Melting Point (Solidus) | 1720–1750°F |
| Density @ 68°F | 0.33 lb/cu in |
| Specific Gravity | 8.9 |
| Electrical Conductivity | 18–20% IACS |
| Thermal Conductivity | 50 Btu/sq ft/ft/hr/°F |
| Thermal Expansion (68–572°F) | 9.6 × 10⁻⁶ /°F |
| Modulus of Elasticity | 15,000 ksi |
| Modulus of Rigidity | 5,500 ksi |
Notes:
Excellent electrical conductivity makes it suitable for connectors.
Moderate thermal expansion ensures dimensional stability in varying temperatures.
Fabrication & Machining
| Process | Suitability |
|---|---|
| Soldering | Excellent |
| Brazing | Good |
| Oxyacetylene Welding | Not Recommended |
| Gas Shielded Arc Welding | Not Recommended |
| Coated Metal Arc Welding | Not Recommended |
| Cold Working | Good |
| Machinability | 85% Rating |
Tips for Fabrication:
Use standard machining practices for bronze alloys.
Avoid high heat welding; prefer brazing or mechanical joining.
Annealing can restore ductility after extensive cold working.
Thermal Treatment
| Process | Min Temp (°F) | Max Temp (°F) |
|---|---|---|
| Annealing | 900 | 1200 |
Note:
Annealing improves ductility, reduces internal stresses, and enhances workability.
Applications
C53400 Phosphor Bronze from conexmetals.com is widely used in:
Bearings & Bushings – Excellent wear resistance and low friction.
Gears & Pinions – High fatigue strength and dimensional stability.
Electrical Connectors & Components – Superior conductivity and corrosion resistance.
Valve Parts & Shafts – High durability in harsh environments.
Screw Machine Components – Exceptional machinability and accuracy.
Marine & Industrial Equipment – Corrosion-resistant in humid or saline conditions.
Benefits for Engineers and Manufacturers:
Long-term reliability under mechanical stress.
Superior machinability reduces production costs.
Consistent material performance across batches.
Specifications
| Form | Standard | Description |
|---|---|---|
| Rod / Bar / Shapes | ASTM B139/B139M | Phosphor Bronze Rods, Bars & Shapes |
| Plate / Sheet / Strip | ASTM B103/B103M | Phosphor Bronze Plate, Sheet, Strip & Rolled Bar |
| Bearings & Bushings | MIL-B-13501 | Brass & Bronze Bearings and Bushings |
| General | SAE J461 / J463 | Wrought & Cast Copper Alloys |
| Strip (Cold Rolled) | AMS 4520 | Bronze Strip, Cold Rolled, Half Hard |
