CNC Machining Copper Properties, Denifition, Tips, Surface finish

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CNC machining copper can be a great way to produce high-quality parts and copper components. Copper alloys have a variety of desirable properties, such as good electrical conductivity and thermal conductivity. In addition, it can be finished in various ways to create an attractive appearance. Here are some tips on copper machining and achieving the best results.

If you're looking for a reliable and economical way to produce parts made from PTFE Teflon, CNC machining is a perfect choice. PTFE Teflon is favored for its excellent material properties and wear resistance.

What is Copper?

Copper is also a soft metal, which makes it easy to machine. It is typically used in small portions due to its high cost. It is an excellent conductor of electricity and heat, making it ideal for electrical applications. It is a chemical element with the symbol Cu (from Latin: cuprum) and atomic number 29. A freshly exposed face of pure solid copper bars has a pinkish-orange color. An annealed pure copper has a Brinell hardness number of 36 and a tensile strength of about 13 tons per square inch.

Pure Copper is a rigid metal to work with, but it has several properties ideal for specific applications. It is nickel plated to make it corrosion-resistant, and it is also quite difficult to damage. Copper is also excellent electrical conduction, ideal for electrical applications and specialized precision machining.

Copper machining is an excellent way to create parts with high dimensional accuracy and fine surface finish. This milling process can be used to make electrical components, heat exchangers, and other parts.


There are many types of copper, but the three most common are C110, C1101, and copper alloy. C110 is the pure copper used in electrical applications where conductivity is vital.

C1101 is a slightly impure form of copper and is often used in plumbing applications where durability is more important than conductivity. Copper alloy is a mixture of copper and other metals used in various applications where both conductivity and durability are essential.

What is CNC Machining Copper?

CNC machining copper is a popular choice for fabricating machined copper parts and customer-designed copper components for various industries. These copper machined parts exhibit excellent corrosion resistance with thermal and electrical conductivity. CNC Machining requires specialized process knowledge to produce cost-effective copper parts with improved surface finish.

Machining copper blanks is a process that can improve the material's machinability. The completed operations allow for a cleaner and smoother finish. Cold headed blanks improve the overall strength and durability of the copper.

Machining tips

Copper is a popular choice for CNC machining, thanks to its excellent machinability and surface quality. When machining, it's important to use the right speed and feed rates to minimize tool wear and achieve a good finish. Copper machining requires specialized job knowledge.

Using Flood cooling in the production

Copper CNC machining produces a lot of heat, so using cutting fluid will help to prevent tool wear and achieve a better finish.

High RPMs

It requires a high spindle speed to prevent tool wear.

Low feed rates

Due to it's high ductility, a high feed rate will cause tool wear. So, use a low feed rate to achieve maximum cutter life.

Select the correct tool material

If you're looking to machine copper, there are a few things you need to keep in mind. First, you need to use a suitable tool material. For turning, use a cutting-bit made of high-speed steel or carbide. Using a tool-bit with a hard coating for milling, such as titanium nitride.

Use a sharp tool

Copper is a soft material, so a dull tool will cause damage to the surface.

With these tips in mind, you'll be able to produce high-quality CNC machined copper parts with your CNC machine.

Surface finish

Several different finishes can be achieved after machining. Alloying elements such as beryllium or phosphorus can be added to improve the machinability of the alloy. CNC turning can be used to produce a smooth finish. brazing can also be used to improve the finish.


Electropolishing is an excellent way to finish surfaces after copper machining. It provides many benefits, including excellent electrical and thermal conductivity, superior corrosion resistance, and a better finish. In this process, an electrical current is used to remove metal from the surface of a material. Electropolishing can also be used to remove the bur from copper parts.

Media Blasting

One standard method is media blasting, which uses abrasive media to sand down the surface of the material. This method can get various finishes, from a smooth, glossy finish to a rougher, more textured finish.

Nickel plating

Nickel plating is another standard method for achieving the desired surface finish through recent developments in machining technology. Nickel is widely used in finishing procedures after Copper CNC Machining due to its high corrosion resistance and excellent electrical and thermal conductivity. Nickel plating is typically performed using a Nickel anode and a Nickel sulfate or Nickel chloride solution.

Gold plating

Copper has excellent conductivity, and gold plating provides a great surface finish. Thermoforming can be used to gold plate the entire part. This gives the part a consistent, high-quality finish.

Gold plating is often used in applications where excellent conductivity is required. Gold plated parts have a consistent, high-quality finish. It is a practical finish for copper CNC machined parts.


Copper is a valuable resource that has many applications in manufacturing. It is a soft, malleable, ductile metal with high thermal and electrical conductivity. By understanding the properties and finishes of copper, you can make better decisions about which products to manufacture and how to produce the best. We hope this article has helped you learn more about copper and its uses in CNC machining. Are there any other questions you have about this material or its finishes? Contact Worthy Hardware, and we’ll be happy to answer them.


Worthy Hardware is a CNC manufacturing and sheet metal fabrication company,including CNC machining services,CNC milling services, CNC turning services, laser cutting services and stamping services.Call us +86-76989919645 or email us [email protected] for more discounts for your projects.