CNC · Metal

CNC Copper Alloys

CNC Copper Alloys are a class of high-performance metal materials with excellent electrical conductivity, thermal conductivity, corrosion resistance, and good machinability. With their excellent physical and chemical properties, they play a key role in modern industrial production and are an ideal choice for high-precision, durable, and reliable parts.

Corrosion Resistance

Thermally Conductive

Electrical Conductivity

cnc-copper-alloys

Lead Time

5~7 days

Density

8.7-8.9 g/cm³

Typical Tolerance

±0.08 mm

Max Size

3600 x 2500 x 600 mm

Material Profile

Why Copper Alloys Make Sense for CNC Machining

Excellent electrical and thermal conductivity

Copper alloys provide very high electrical and thermal conductivity, making them suitable for connectors, bus bars, heat sinks, and cooling components.

Good corrosion resistance

These alloys resist atmospheric and water-related corrosion well, especially in electrical, plumbing, and heat exchange applications.

High ductility and formability

Copper alloys can be machined and formed into complex shapes while maintaining reliable dimensional stability.

Antimicrobial properties

Copper surfaces naturally inhibit the growth of many microorganisms, making them useful for medical, sanitary, and touch-contact components.

Performance Snapshot

Material Characteristics at a Glance

Relative performance profile across key engineering parameters. Values are contextual — not absolute stress ratings.

Detail

Medium

Source score: 3/5

Strength

Excellent

Source score: 5/5

Flexibility

Low

Source score: 2/5

Benefits

  • High ductility
  • Excellent electrical and thermal conductivity
  • Good heat resistance
  • Easy to machine and finish

Limitations

  • Limited strength compared with steel or titanium alloys
  • Prone to oxidation or surface tarnishing without proper finishing

Technical Specifications

CNC Copper Alloys Family Data

Material Properties

Density
8.7-8.9 g/cm³
Melting Point
1083°C
Thermal Conductivity
350-400 W/m·K
Electrical Conductivity
58-60 MS/m
Coefficient of Expansion
16-17 µm/m·K

Machining Rules

Max Build Size
850 x 500 x 500 mm
Minimum Wall Thickness
1 mm
Minimum Assembly Gap
0.01 mm
Minimum End Mill Size
1 mm
Minimum Drill Size
0.5 mm
Tolerances
Typical tolerances are ±0.08 mm, depending on the specific requirements of the part.

Available Finishes

Finishes That Make Sense For Copper Alloys

E

Electropolishing

Uses an electrochemical process to smooth and brighten copper alloy surfaces while reducing microscopic surface roughness.

N

Nickel Plating

Deposits a nickel layer to improve wear resistance, corrosion resistance, and surface durability.

T

Tin Plating

Adds a solderable and corrosion-resistant tin layer, commonly used for electrical terminals and conductive components.

B

Bead Blasting

Blasts the surface with fine media to create a uniform satin texture and reduce visible machining marks.

Compare & Decide

Pick A Different CNC Family

Better Machinability

CNC Brass Alloys

CNC Brass Alloys are metal materials with copper (Cu) and zinc (Zn) as the main components, commonly used for CNC machining. Depending on the alloy composition, brass can provide good mechanical properties, corrosion resistance, and excellent electrical and thermal conductivity.

Wear Resistance

CNC Bronze Alloys

CNC Bronze Alloys are a class of alloy materials containing copper base, usually composed of copper (Cu) with elements such as tin (Sn), aluminum (Al), phosphorus (P), silicon (Si) or manganese (Mn). These alloys have good mechanical properties, wear resistance, corrosion resistance and excellent machinability, and are widely used in industrial manufacturing.

Next Step

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