Quick Look

DensityMelting PointThermal ConductivityElectrical ConductivityCoefficient of Expansion
8.7-8.9 g/cm³950-1050°C50-60 W/m·K10-15 MS/m16-18 µm/m·K
Density
8.7-8.9 g/cm³
Melting Point
950-1050°C
Thermal Conductivity
50-60 W/m·K
Electrical Conductivity
10-15 MS/m
Coefficient of Expansion
16-18 µm/m·K

About the Material

Materials We Support：
ASTMDINGBDensity (g/cm³)HardnessTensile Strength,Yield (MPa)Fatigue Strength (Mpa)Elongation at Break (%)
C521CuSn8QSn7-0.28.990~120 HB450~600150~25010~15
C172CuBe2&2.1247QBe28.8180~220 HB700~900250~4004~10
C182CuCrQCr0.58.9150~210 HB700~800200~3508~12

Advantages:

  1. Wear Resistance: Excellent resistance to wear, making bronze ideal for components that experience high friction.

  2. Corrosion Resistance: Natural resistance to corrosion, especially in salty or wet environments, such as marine applications.

  3. Good Machinability: Bronze alloys are easy to machine, offering high precision and reducing production time.

  4. Attractive Finish: The material has an appealing natural finish, ideal for decorative purposes.

Limitations:

  1. Material Cost: Bronze can be more expensive compared to other metals like aluminum or steel.

  2. Density: Bronze is heavier than many other metals, which may limit its use in weight-sensitive applications.

  3. Softness: Bronze is softer compared to other alloys, making it susceptible to dents and deformation under heavy loads.

Chemical Composition Table for Bronze Alloys

ElementTypical Percentage (%)
Copper (Cu)80-90
Tin (Sn)5-12
Zinc (Zn)1-5
Lead (Pb)≤ 1.5
Nickel (Ni)≤ 1.0

Mechanical Machining Properties Table for Bronze Alloys

PropertyValue
Machinability RatingGood
Cutting Speed (m/min)100-150
Tool Wear ResistanceModerate
Coolant RequirementOptional
Surface Finish QualityHigh

Design Parameters Table for CNC Machining Bronze Alloys

Maximum   Bulid Size (mm)Minimum Wall   Thickness (mm)Minimum   Assembly Gap (mm)Tolerance (mm)Minimum End   Mill Size (mm)Minimum Drill   Size (mm)
850x500x50010.01Minimum 0.0110.5

Industry Applications and Case Studies for CNC Machining Bronze Alloys

  1. Marine Industry:

    • Application: Production of propellers, valves, and fittings.

    • Case Study: A marine equipment manufacturer used CNC machining to create bronze propeller blades, ensuring durability and resistance to saltwater corrosion.

  2. Automotive Industry:

    • Application: Manufacturing of bushings, bearings, and gears.

    • Case Study: An automotive parts supplier utilized CNC machining to produce bronze bearings, reducing friction and wear in high-performance engines.

  3. Decorative and Architectural:

    • Application: Production of statues, plaques, and architectural fittings.

    • Case Study: An architectural firm used CNC machining to create intricate bronze fittings, adding an aesthetic touch to building exteriors.

Frequently Asked Questions (FAQs) about CNC Machining Bronze Alloys

  1. What are the benefits of using bronze alloys in CNC machining?

    • Bronze alloys offer high wear resistance, good machinability, and excellent corrosion resistance, making them suitable for various applications.

  2. Is CNC machining suitable for high-volume bronze alloy production?

    • Yes, CNC machining is effective for both prototyping and high-volume production, with consistent quality.

  3. What industries benefit from CNC machining bronze alloys?

    • Industries such as marine, automotive, and architectural benefit from bronze's wear resistance, corrosion resistance, and aesthetic qualities.

  4. How does bronze compare to brass in terms of machinability?

    • Bronze is generally harder and offers better wear resistance than brass, but both are relatively easy to machine.

  5. What are the limitations of using bronze alloys in CNC machining?

    • Limitations include higher material costs, weight, and susceptibility to deformation under heavy loads.

  6. Can bronze alloys be coated to improve surface hardness?

    • Yes, bronze alloys can be coated or treated to improve hardness and wear resistance.

  7. What tolerances can be achieved with CNC machining bronze alloys?

    • Typical tolerances are ±0.1 mm, depending on the specific requirements of the part.

Finishing Options

Name
Colors
Can Be Applied with
Passivating
-
Enhances corrosion resistance by creating a protective oxide layer on the surface, which helps prevent further oxidation and tarnishing.
Powder Coating
Provides a wide range of colors
Provides a protective coating that improves corrosion resistance and can give a uniform, colored finish.
Electropolishing
Results in a shiny, bright finish
Enhances surface smoothness and brightness, removing surface oxides and improving the appearance.
Zinc Plating
Gray or blue
Provides significant corrosion protection, extending the material's durability and preventing rust.
Silver Plating
Silver
Enhances corrosion resistance, provides a conductive layer, and offers a decorative, reflective finish.
Gold Plating
Gold
Provides a decorative gold finish with enhanced corrosion resistance and improved aesthetic appeal.
Electroless Nickel Plating
Metallic silver or gray
Enhances corrosion resistance and surface hardness, and provides a uniform, adherent coating that improves wear resistance.
Bead Blasting
-
Results in a frosted, matte surface, which can enhance the appearance by providing a uniform texture.
Tempering
-
Alters strength, hardness, and ductility.
Name
Passivating
colors
-
Can Be Applied with
Enhances corrosion resistance by creating a protective oxide layer on the surface, which helps prevent further oxidation and tarnishing.
Name
Powder Coating
colors
Provides a wide range of colors
Can Be Applied with
Provides a protective coating that improves corrosion resistance and can give a uniform, colored finish.
Name
Electropolishing
colors
Results in a shiny, bright finish
Can Be Applied with
Enhances surface smoothness and brightness, removing surface oxides and improving the appearance.
Name
Zinc Plating
colors
Gray or blue
Can Be Applied with
Provides significant corrosion protection, extending the material's durability and preventing rust.
Name
Silver Plating
colors
Silver
Can Be Applied with
Enhances corrosion resistance, provides a conductive layer, and offers a decorative, reflective finish.
Name
Gold Plating
colors
Gold
Can Be Applied with
Provides a decorative gold finish with enhanced corrosion resistance and improved aesthetic appeal.
Name
Electroless Nickel Plating
colors
Metallic silver or gray
Can Be Applied with
Enhances corrosion resistance and surface hardness, and provides a uniform, adherent coating that improves wear resistance.
Name
Bead Blasting
colors
-
Can Be Applied with
Results in a frosted, matte surface, which can enhance the appearance by providing a uniform texture.
Name
Tempering
colors
-
Can Be Applied with
Alters strength, hardness, and ductility.
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Parts Made by AutofabX

CNC Bronze Alloys
CNC Bronze Alloys