Leaded Bronze

Bearings and Bushings for the Future: Precision and Customization: Our company, in bearing engineering with decades of experience, designs and develops high-precision self-lubricating bronze bearings & plain bushes. We offer a wide array of sliding bearings tailored to meet specific needs. Renowned for our expertise in custom bronze bushing and slide plate solutions, we provide an expansive selection of bushing metal alloys. Contact us today to benefit from unparalleled services at competitive prices.

Leaded Bronze

Explore Our Selection Of High Leaded Tin Bronze Alloys For Your Bearing And Bushing Needs!

High Leaded Tin Bronze Alloys Product Selection

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High Leaded Tin Bronze Alloys: Bearings and Bushings.

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High leaded tin bronze alloys are designed primarily to enhance machinability. They are well-regarded for their corrosion and abrasion resistance, ensuring a long service life. Typical applications include wire and cable connectors, electrical plug-type connectors, doorknobs, screws and nuts, corrosion-resistant bushings, and rolling mill bearings.

ALUMINIUM BRONZE BUSHING
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High Leaded Tin Bronze Alloys Product Selection

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High-Leaded Tin Bronze Alloys, Leaded tin bronze EN 1982

High Leaded Tin Bronze Alloys For Bearing Bushes: Codes And Specifications

Here are some material codes and specifications commonly used for bearing bushes:

  • CDA 932 (SAE 660, C93200):
    This alloy is a standard material for light-duty applications, valued for its strength, machinability, and resistance to corrosion from seawater and brine. It contains 81-85% copper, 6.3-7.5% tin, 6-8% lead, 1-4% zinc, 1% nickel, and trace amounts of antimony and iron. It is suitable for automotive fittings, bearings, bushings, gears, impellers, and washers, meeting ASTM B505, ASTM B271, SAE J461, and SAE J462 standards.
  • C93600 (Modified SAE 64 Bronze):
    Used in bushings for corrosion, lubrication, or pressure applications, this alloy contains 79-83% copper, 11-13% lead, and 6-8% tin. It is available in various sizes and can be custom-made to fit specific needs.
  • C93200:
    Known for its strength, hardness, and shock resistance, C93200 is popular for heavily loaded, lubricated, and true-running bearings. It complies with SAE 660, SAE J461/J462, and ASTM B505 standards.
  • C93700 Alloy (“Bearing Bronze”):
    This high-strength, leaded bronze alloy is designed for applications requiring durability and wear resistance.

Choosing the Right High Leaded Tin Bronze Alloy
When selecting a high leaded tin bronze alloy for bearing bushes, consider the application requirements, including load capacity, speed, and environmental conditions. Each of these materials has specific properties that make them suitable for particular uses. Consulting a technical expert or supplier will help ensure that the chosen material meets the necessary specifications.

Summary of Cast Bronze Characteristics

  • Leaded Red Brass:
    Offers reasonable strength, excellent thermal conductivity, and corrosion resistance against seawater and brine. It has good machining and casting properties, with lead content providing pressure tightness. Leaded Red Brass is an economical choice for bearings in low-load, low-speed applications but requires reliable lubrication and a moderately hard shaft.
  • Tin Bronzes:
    Hard, strong alloys known for good corrosion resistance, particularly in seawater. They are moderately machinable and highly wear-resistant, making them suitable for high-load, low-speed applications. Reliable lubrication and a moderately hard shaft are essential. Increased tin concentration improves strength but reduces conformability and embeddability.
  • Leaded Tin Bronze:
    Lead enhances machinability in these alloys without significantly affecting mechanical properties. They are essentially free-cutting versions of tin bronzes with similar characteristics and uses.
  • High-Lead Tin Bronze:
    Commonly used for bearings at moderate loads and speeds. High-Lead Tin Bronze is excellent in boundary-lubricated conditions or where lubrication is uncertain. The lead forms isolated globules that serve as lubricant reservoirs. Alloy C93200 is a versatile choice with good machinability, while C93600 provides improved anti-seizing properties. C93800 resists sulfuric acid below 78%, and C94100 performs well in boundary-lubricated settings.
  • High-Strength Brass:
    Characterized by high mechanical strength, good corrosion resistance, favorable casting properties, and low relative cost. Alloys C86300 and C86400 require hardened shafts and reliable lubrication when used in high-strength bearings.
  • Aluminum Bronze:
    Known for high strength and excellent corrosion resistance. Heat-treatable in some cases. Provides good properties at elevated temperatures and serves as a durable bearing alloy with excellent abrasion and impact resistance. Requires hard shafts, fine surface finishes, and proper lubrication.
  • Silicon Brass:
    Moderate-to-high strength alloys with good corrosion resistance and suitable casting properties. Used in mechanical products and pump components where strength and corrosion resistance are needed.
  • Copper Beryllium Alloys:
    These high-strength materials offer excellent electrical and thermal conductivity. Suitable for bearings needing a balance of strength and conductivity, but require clean lubrication and hardened steel shafts with a fine surface finish.
  • Leaded Copper:
    Ultra-high-lead alloys used for special-purpose bearings with low strength and poor impact properties. Ideal for boundary-lubricated environments.
  • Lead-Free Bronzes:
    Designed to replicate the properties of leaded alloys without safety concerns. Comparable friction, strength, and corrosion resistance make them an effective alternative.

 

Comparing Leaded Tin Bronze Alloys: EN 1982 CC496K and EN 1982 CC495K

Leaded tin bronze alloys, including EN 1982 CC496K (CuSn7Pb15-C) and EN 1982 CC495K (CuSn10Pb10-C), are recognized for their excellent machinability, wear resistance, and corrosion resistance. Here’s a closer look at these two alloys:

  • EN 1982 CC496K (CuSn7Pb15-C):
    Composition: This high-leaded tin bronze contains 13-17% lead, which enhances machinability and bearing performance, 6.0-8.0% tin, and 72-79.5% copper. It also includes small quantities of other elements like nickel, zinc, antimony, and manganese.
    Mechanical Properties: Tensile strength of 210 MPa, yield strength of 99 MPa, and thermal conductivity of 52 W/m-K.
    Applications: Ideal for automotive and aero engine bushes that might suffer from lubrication issues. It tolerates moderate loads at high sliding velocities and withstands dust and grit.
    Standards: Complies with BS EN 1982-2008 and BS 1400 LB1 CuPb15Sn9.
  • EN 1982 CC495K (CuSn10Pb10-C):
    Composition: Contains 8.0-11% lead, 9.0-11% tin, and 76-82% copper, with smaller amounts of nickel, zinc, antimony, and manganese.
    Mechanical Properties: Tensile strength of 240 MPa, yield strength of 120 MPa, and thermal conductivity of 48 W/m-K.
    Applications: Known for corrosion and wear resistance as well as machinability. Used in builders’ hardware, fasteners, and industrial applications requiring acid resistance, along with bearings, bearing plates, and marine components.
    Standards: Recognized in international standards, including Germany’s DIN 17656 and DIN 1716, Australia’s AS 1565, China’s GB 1176, and the European EN 1982.

Conclusion:
Both EN 1982 CC496K and EN 1982 CC495K are known for their resistance to corrosion and abrasion, excellent machinability, and long service life. They are suitable for bushings, bearings, and other machine parts in demanding environments. When choosing between them, consider mechanical requirements, corrosion resistance, and environmental conditions. Lead content, which enhances machinability, should also be evaluated from a toxicity and environmental perspective.

High-Leaded Tin Bronze Alloys Tensile (psi) Yield (psi) Elongation (%) These alloys contain 7% to 30% lead, which provides exceptional free-cutting properties, thermal conductivity, and lubricity. Their high lead content makes them suitable for bearing applications where lubrication loss might occur. They perform exceptionally well in challenging environments containing dirt or other foreign materials. Their malleability allows them to encase foreign particles, protecting the mating surface (like a shaft) from wear. Alloy Properties C93400 Offers high lead content for superior lubrication. C93500 Balances machinability and wear resistance, suited for bearings. C93600 Enhanced lubricity with great foreign particle encapsulation. C93700 Optimized for heavy-duty bearing applications. C93800 Exceptional protection against wear and corrosion in challenging environments. C93900 Notable for its self-lubricating properties. C94000 High malleability ensures outstanding encapsulation of contaminants. C94100 Ideal for bearings in harsh environments with consistent lubrication retention. C94300 High lead content ensures exceptional thermal conductivity and wear resistance.

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High Leaded Tin Bronze Alloys for Bearing Bushes

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High leaded tin bronze alloys are renowned for their exceptional mechanical properties, making them ideal for various applications, particularly in bearing bushes where durability and wear resistance are essential.

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With innovative products, we are a dependable partner in enhancing the efficiency, intelligence, and sustainability of self-lubricating bearings. We produce high-precision components, bushings for powertrain and chassis applications, and various bronze and plain bearing solutions for numerous industrial uses.

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