CNC machining can use a wide range of materials to create on-demand and custom products. Metal is a popular material for this process. But you have several options. Depending on the metal you choose, different cutting tools and techniques must be employed. Also, the density, texture, toughness, cost, and corrosion resistance vary between different metals. Here are some of the best metal types to use for CNC machining and their various properties.
What Are the Best Metal Types for CNC Machining?
Of all the different engineering materials, metal remains the most commonly used across a variety of industries. Whether it is for a medical device, an aerospace part, or something else entirely, here are some of the top metals used for CNC machining and their different properties.
Steel
Steel is one of the most commonly used materials in CNC machining. It’s an alloy that contains carbon and iron, so it is considered moderately strong and machineable. But steel isn’t corrosion-resistant unless you choose stainless steel, which comes at a higher cost.
Aluminum
Aluminum is another metal that CNC machinists frequently use because it is economical and easily obtainable. This type of metal is also easily machinable, so it is used by a lot of hobbyists. For commercial applications, elements like copper, iron, silicon, and magnesium are added to the mix.
Copper
Copper might be an expensive material to use for a CNC machining project, but it has a generous scrap return value. When milled, copper delivers a clean and polished appearance. It is also known for high heat and electrical conductivity.
Titanium
Titanium is often used for CNC projects thanks to its high strength-to-weight ratio compared to other CNC metals. It’s nearly half the weight of steel but has amazing strength. The downsides are that this material can be quite costly and difficult to machine.
Bronze
Bronze is another metal used in CNC machining because it has good corrosion resistance. The material has high levels of iron, zinc, and tin content and is used frequently for bushings, bearings, marine pipes, and art pieces.
Brass
Brass is a popular material for CNC machining due to its high tensile strength, medium hardness, and corrosion resistance when exposed to salt water. However, brass does come at a substantial initial cost.
Get Help Choosing the Right Metal Types for CNC Projects
The great news is that various types of metal can be used for your next CNC project. If you have an idea that you’d like to bring to life, find out how Components by Design Inc. can help. We have over 15 years of experience with CAD/CAM software and CNC routing.
Our specialists are skilled in using all types of materials, including metal. We can help you choose the best type of metal for your CNC project, so you get the most optimal results. Contact us today for more information.