Oilless Bearing

C54400 Phosphor Bronze bushing

C54400 Phosphor Bronze bushing

Self-lubricating bronze bearings are engineered for applications where external lubrication is impractical. Solid lubricants are compressed and molded directly into the bearing to guarantee a maintenance-free product. No additional lubrication is necessary.

C54400 Phosphor Bronze Bushings: Performance, Applications, and Maintenance

C54400 Phosphor Bronze is a high-performance copper alloy widely used in a variety of mechanical and industrial applications. Known for its toughness, strength, and excellent wear resistance, it is a popular choice for bushings, bearings, and other components subjected to friction and stress. This article provides a detailed analysis of C54400 Phosphor Bronze bushings, including their chemical composition, key characteristics, applications, and maintenance considerations.

Chemical Composition and Properties

C54400 Phosphor Bronze is an alloy of copper, tin, and phosphorus, with trace amounts of lead, zinc, and iron. The balanced composition of these elements imparts several beneficial properties to the alloy:

  • Good Machinability: The presence of lead enhances the machinability of C54400, making it easy to process into various shapes and sizes, such as bushings and washers. This facilitates efficient manufacturing and reduces production costs.
  • Excellent Cold Working Properties: C54400 has good plasticity and ductility, making it suitable for cold forming processes such as stamping, bending, and drawing. This allows the creation of intricate bushings and other components that meet specific design requirements.
  • High Strength: This alloy exhibits high mechanical strength, enabling it to withstand significant loads and pressure without failure. This makes C54400 ideal for use in heavy-duty applications where performance under stress is crucial.
  • Wear and Corrosion Resistance: C54400 Phosphor Bronze shows excellent resistance to wear and corrosion, particularly in challenging environments. This helps to extend the lifespan of bushings and other components exposed to harsh operating conditions.

Applications of C54400 Phosphor Bronze Bushings

Due to its unique combination of strength, wear resistance, and machinability, C54400 Phosphor Bronze is widely used across various industries:

  • Mechanical Engineering: C54400 bushings are commonly used in sliding and rotating parts such as bearings, bushings, and thrust washers. These components help reduce friction and wear, improving the efficiency and lifespan of machinery.
  • Automotive Industry: In the automotive sector, C54400 Phosphor Bronze is used in engine components, transmission parts, and other critical applications where wear resistance and durability are paramount. These bushings ensure smooth operation and contribute to the overall reliability and safety of vehicles.
  • Aerospace Industry: C54400 is favored for aerospace applications due to its high strength and excellent performance in extreme conditions. It is used to manufacture precision parts that require high load-bearing capacity and resistance to wear and corrosion.
  • Electrical Industry: With good electrical conductivity, C54400 Phosphor Bronze is also used in electrical connectors and components, where its resistance to corrosion and excellent mechanical properties make it an ideal choice for ensuring reliable electrical connections.

Installation, Maintenance, and Care

To maximize the performance and longevity of C54400 Phosphor Bronze bushings, proper installation, lubrication, and maintenance are essential:

  • Correct Installation: Ensure that the bushing is properly aligned and installed to avoid excessive gaps or misalignment. Incorrect installation can lead to uneven wear and premature failure.
  • Regular Lubrication: Frequent lubrication is crucial for minimizing friction and wear. This helps reduce heat buildup and ensures smooth operation over time. Use appropriate lubricants to maintain the bushing’s performance.
  • Periodic Inspections: Regular inspections are necessary to identify signs of wear or damage. If significant wear or damage is detected, the bushing should be replaced to prevent failure and maintain equipment performance.

Common Issues and Solutions

While C54400 Phosphor Bronze bushings are known for their durability, certain issues may arise during use:

  • Oxidation and Corrosion: Over time, the surface of C54400 bushings may suffer from oxidation or corrosion, especially in humid or harsh environments. To prevent this, apply a protective coating or polish the surface regularly to maintain its appearance and functionality.
  • Cold Welding: During machining, cold welding may occur, particularly if insufficient cutting fluid is used or the cutting speed is too high. To avoid this, ensure proper lubrication and control the machining conditions.

Conclusion

C54400 Phosphor Bronze bushings offer an excellent combination of strength, wear resistance, and machinability, making them suitable for a wide range of industrial applications. Their high strength, corrosion resistance, and good electrical conductivity make them an ideal choice for mechanical, automotive, aerospace, and electrical components. To ensure optimal performance, proper installation, lubrication, and maintenance are essential.

By understanding the characteristics and proper care of C54400 Phosphor Bronze, users can ensure that their bushings and other components provide reliable, long-lasting performance in even the most demanding environments.

C54400 Phosphor Bronze: Product Overview and Specifications

Product Description:

  • Material Type: Phosphor Bronze B-2
  • Tempers: H04 (Hard)
  • Form Options:
    • Solids: 3/8″ to 2 3/4″ O.D.
    • Hexagonal: 3/8″ to 2″ O.D.
  • Standard Lengths: 144 inches

Typical Applications:

  • Electrical: Electrical connectors
  • Industrial: Bearings, bushings, gears, pinions, screw machine products, shafts, sleeve bearings, thrust bearings, thrust washers, valve parts

Equivalent Specifications:

Specification CDA ASTM SAE AMS Federal Other
Material C54400 B139, B139M J461, J463

Chemical Composition (per ASTM B139/B139M-12(2017)):

Element % Range
Copper (Cu) Min. 99.5%
Lead (Pb) 3.00–4.00%
Tin (Sn) 3.50–4.50%
Zinc (Zn) 1.50–4.50%
Iron (Fe) ≤ 0.10%
Phosphorus (P) 0.01–0.50%

Note: Cu + sum of named elements must be ≥ 99.5% (single values are maximums).

Machinability:

Copper Alloy UNS No. Machinability Rating Density (lb/in³ at 68°F)
C54400 80 0.320

Mechanical Properties (according to ASTM B139/B139M-12(2017)):

Size Range (Round & Hex) Tensile Strength (min) Yield Strength (min) Elongation (min) Rockwell “B” Hardness Remarks
1/16″ to 1/4″ 65 ksi (450 MPa) – 8% 86 HRB
1/4″ to 1/2″ 60 ksi (415 MPa) – 10% 86 HRB
1/2″ to 1″ 55 ksi (380 MPa) – 12% 86 HRB
>1″ 50 ksi (345 MPa) – 15% 86 HRB

Physical Properties (provided by CDA):

Property US Customary Metric
Melting Point (Liquidus) 1830 °F 999 °C
Melting Point (Solidus) 1700 °F 927 °C
Density 0.320 lb/in³ at 68°F 8.89 gm/cm³ at 20°C
Specific Gravity 8.89 8.89
Electrical Conductivity 19% IACS at 68°F 0.111 MegaSiemens/cm at 20°C
Thermal Conductivity 50 Btu/sq ft/ft hr/°F at 68°F 86.5 W/m at 20°C
Coefficient of Thermal Expansion (68–572°F) 9.6 ·10⁻⁶ per °F 16.6 ·10⁻⁶ per °C (20–300°C)
Specific Heat Capacity 0.09 Btu/lb/°F at 68°F 377.1 J/kg at 20°C
Modulus of Elasticity 15,000 ksi 103,420 MPa
Modulus of Rigidity 5,600 ksi 38,610 MPa

Fabrication Properties (provided by CDA):

Technique 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
Capacity for Cold Working Good
Machinability Rating 80

Thermal Properties (provided by CDA):

Property Value
Temperature (measured in Fahrenheit)
Melting Point (Liquidus) 1830 °F (999 °C)
Melting Point (Solidus) 1700 °F (927 °C)

Custom Bronze Bushing Solutions Tailored self lubricating Designs

Can’t find the right fit? We provide custom-engineered self lubricating bushing and replaced bearing solutions based on your technical drawings. From material selection to groove geometry, we solve your unique bearing challenges.