bearing bushes bronze brass
bearing bushes bronze brass1

CuSn5ZnPb5 Tin Bronze Alloy Overview

CuSn5ZnPb5, also known as red bronze or leaded gunmetal, is a versatile tin bronze alloy with excellent machinability and corrosion resistance. It is widely used in various industrial applications. Below is a detailed overview of its properties, chemical composition, mechanical and physical characteristics, and availability.

International Standards

The alloy conforms to the following international standards:

  • BS 1400 LG2
  • ASTM B505 C83600
  • CuSn5ZnPb (Rg5)

Key Features

  • Machinability: Excellent
  • Corrosion Resistance: Good

Chemical Composition

Element % Min % Max
Cu (a) 83.0 87.0
Ni – 2.0
P – 0.10
Pb 4.0 6.0
Sn 4.0 6.0
Zn 4.0 6.0
Al – 0.01
Fe – 0.3
S – 0.10
Sb – 0.25
Si – 0.01

(a) Including nickel

Mechanical Properties (Minimum Values)

Property Continuous (GC)¹ Centrifugal (GZ)
Tensile Strength, Rm (MPa) 250 250
Yield Point 0.2%, Rp0.2 (MPa) 110 110
Elongation 5D, A (%) 13 13
Hardness, HBW (10-1000) 65 65

(¹ For pieces with an exterior diameter of ≤ 300 mm. For larger sizes, values to be agreed upon with the order.)

Physical Properties

Property Value
Density (kg/dm³) 8.8
Specific Heat (J/(g·K)) 0.373
Thermal Expansion (10⁻⁶/K) 18.2
Thermal Conductivity (W/(m·K)) 71
Electrical Conductivity (MS/m) 8.5

Chart: Mechanical Properties Comparison

Property Continuous (GC) Centrifugal (GZ)
Tensile Strength (MPa) 250 250
Yield Point 0.2% (MPa) 110 110
Elongation 5D (%) 13 13
Hardness (HBW) 65 65

Applications

CuSn5ZnPb5 is commonly used in:

  • Marine applications
  • Pump components
  • Valves and fittings
  • Bearings and bushings
  • Decorative and architectural elements

This alloy is a reliable choice for applications requiring durability, ease of machining, and resistance to harsh environments. For specific requirements or custom forms, we can accommodate client requests.

CuSn5ZnPb5

CuSn5ZnPb5 is a type of tin bronze alloy that is commonly used in the manufacturing of bearing bushings, flange bearings, and other custom bronze parts. This alloy is known for its excellent mechanical properties, wear resistance, and corrosion resistance, making it suitable for various industrial applications.

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  • Key Features of CuSn5ZnPb5:

    • Composition:

      • Copper (Cu): Base metal

      • Tin (Sn): 5% (improves strength and corrosion resistance)

      • Zinc (Zn): 5% (enhances machinability)

      • Lead (Pb): 5% (improves lubricity and wear resistance)

    • Properties:

      • High wear resistance

      • Good corrosion resistance

      • Excellent machinability

      • Low friction coefficient

      • Good load-bearing capacity

  • Applications:

    1. Bearing Bushings: Used in various machinery and equipment to reduce friction and wear between moving parts.

    2. Flange Bearings: Suitable for applications where the bearing needs to be mounted on a flange.

    3. Custom Bronze Parts: Can be machined into various shapes and sizes for specific industrial needs.

  • Customization:

    Custom bronze parts made from CuSn5ZnPb5 can be tailored to meet specific requirements, including:

    • Dimensions: Custom sizes and shapes to fit specific applications.

    • Tolerances: Precision machining to achieve tight tolerances.

    • Surface Finish: Various surface finishes to enhance performance and appearance.

Manufacturing Process

Casting: The alloy is melted and poured into molds to form the desired shape.

Machining: The cast parts are machined to achieve precise dimensions and surface finish.

Finishing: Additional treatments such as polishing, coating, or heat treatment may be applied to enhance the properties of the parts.

Advantages:

  • Durability: Long-lasting performance even under harsh conditions.

  • Versatility: Suitable for a wide range of applications.

  • Cost-Effective: Provides a good balance between performance and cost.

  • Industries:

    • Automotive

    • Marine

    • Industrial machinery

    • Construction

    Conclusion:

    CuSn5ZnPb5 tin bronze is a versatile and reliable material for manufacturing bearing bushings, flange bearings, and custom bronze parts. Its excellent properties make it a preferred choice for various industrial applications where durability, wear resistance, and corrosion resistance are essential. Custom parts can be produced to meet specific requirements, ensuring optimal performance in their intended applications.