CNC Bronze Machining Service
Bronze in CNC Machining
Bronze is an alloy primarily composed of copper and tin, and is a versatile and durable material known for its strength, corrosion resistance, and excellent machinability. These properties make it a preferred choice for CNC machining across various industries, including aerospace, automotive, marine, and art. Bronze machining is a popular method for creating a variety of products, including bearings, electrical conductors, bushings, marine equipment, and more.
5-7 Days
Lead Time
0.125mm
General Tolerances
20*80*100mm
Max. Part Size
0.5mm
Wall Thickness
Tin Bronze C932
Tin bronze is a versatile copper-tin alloy, typically containing 5-12% tin. It offers excellent corrosion resistance, particularly in marine environments, and good wear resistance, making it ideal for applications such as bearings, bushings, and gears. It has moderate strength and good castability but can be prone to tin segregation if not properly cast.
Silicon Bronze C642
Silicon bronze is a copper-silicon alloy, usually with 1-3% silicon, known for its high corrosion resistance and attractive reddish-gold appearance. It provides good strength, excellent weldability, and resistance to stress corrosion cracking. It is less brittle than other bronzes but has lower conductivity.
Aluminum Bronze C954
Aluminum bronze is a copper-aluminum alloy, typically containing 5-11% aluminum, often with iron or nickel additives. It boasts exceptional strength, corrosion resistance (especially in seawater), and wear resistance. It is challenging to cast due to its high melting point and can be susceptible to selective corrosion in certain environments.
Phosphor Bronze C544
Phosphor bronze is a copper-tin alloy with 0.5-11% tin and a small amount of phosphorus (0.01-0.35%). It offers excellent fatigue resistance, springiness, and corrosion resistance, particularly in electrical applications. It has good machinability but can be prone to work hardening.
Subtypes for Bronze We Work with
Choosing the right bronze grades is essential for achieving precise machining outcomes. The common bronze subtypes we produce are listed below.
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Advantages of Bronze
High Machinability
Bronze is highly machinable, allowing for smooth cutting and precise shaping with minimal tool wear. This characteristic is due to the inclusion of lead in some alloys, such as C932 bearing bronze, which acts as a lubricant during machining, reducing friction and enabling cleaner cuts.
Corrosion Resistance
Bronze resists corrosion, particularly in harsh environments like seawater, maintaining its integrity over time. This property is due to the formation of a protective patina, a thin oxide layer on its surface, primarily from its copper content, which shields the material from further oxidation and chemical attack.
Low Friction
Bronze exhibits a low friction coefficient, making it ideal for components that experience constant sliding contact. This characteristic stems from its alloyed structure, particularly in phosphor bronze, where tin and phosphorus enhance lubricity, reducing wear during motion.
Thermal Conductivity
Bronze effectively conducts heat, making it suitable for applications like heat sinks that require heat dissipation. This characteristic is primarily due to its high copper content, which has excellent thermal conductivity, allowing heat to transfer efficiently through the material.
Aesthetic Appeal
Bronze has a warm, reddish-brown hue that is visually appealing, often used in decorative and artistic applications. This property is due to its copper base, which gives it a distinctive color, enhanced by natural patina formation or applied finishes that highlight its aesthetic qualities.
Strength and Durability
Bronze is stronger and more durable than pure copper, suitable for robust components like gears and valves. This property is due to the alloying of copper with elements like tin, aluminum, or manganese, which strengthen the crystal lattice, improving resistance to mechanical stress and deformation.
Applications & Industries
The unique properties make bronze applicable in multiple industries due to its excellent mechanical properties. Some representative applications are listed below.
- Aerospace: Bushings, landing gear components, and non-magnetic parts like compass components.
- Automotive: Synchronizer rings, gears, and bearings.
- Industrial Machinery: Bearings, bushings, and gears.
- Electrical: Connectors and switches use bronze for its conductivity and antimicrobial properties.