8 common materials for CNC machining of precision parts

Becoming an industry standard in the late 1960s, it has since been widely chosen to produce a wide variety of high-precision parts. Using the best CNC machines or computer numerical control machines, it is possible to create many types of complex parts and assemblies that would otherwise be difficult to do with conventional machining processes. When it comes to precision machining services, many customers have this question in their minds, which materials are suitable for machining? There is a wide range of materials compatible with CNC technology. This article here lists some of them.

Precision Machining

High-precision CNC precision parts machining can be made from a variety of materials, as listed below:


Considered exotic when it comes to manufacturing, aluminum is probably the most widely used CNC-milled material. The ability to machine faster than other materials makes aluminum a more useful material for CNC machining. Due to its light weight, non-magnetic properties, corrosion resistance and low price, aluminum is widely used in the production of aircraft parts, auto parts, bicycle frames and food containers.

Stainless steel:

Stainless steel alloys are immune to most stains and rust. Favored for its strength and corrosion resistance, the material can be used in anything from surgical equipment to electronic hardware. Stainless steel is a very versatile material that is relatively light and durable, expanding its use in various industries.

Carbon steel:

Carbon steel is also one of the popular materials to consider for CNC machining. It is available in a variety of formulations from which you can choose based on your application requirements. The material is mainly used for CNC machining due to its durability, safety, long shelf life, economical and environmentally friendly properties.


Widely regarded as one of the simplest and most cost-effective materials for precision machining services, brass is chosen to create complex parts that require complex functions. Brass is easy to machine, smooth, and has a clean surface, and can be used to manufacture medical devices, consumer products, electronic hardware and contacts, accessories, commercial products, and more.


Titanium is heat and corrosion resistant, making it a viable option for many industrial applications. Unaffected by salt and water, titanium is widely used to make medical implants, aircraft parts, and jewelry.

Mechanical spare parts processing


Magnesium is the lightest structural metal widely used by precision machining service providers. Magnesium’s excellent machinability, strength and robustness make it ideal for applications in several industrial sectors.


Demand for CNC machined Monel parts is at an all-time high. It is primarily used in applications that are exposed to corrosive environments and require higher strength. There are very few CNC workshops specializing in Monel machining because the machining is difficult and requires a high level of experience.


It is a nickel-based superalloy that has gained popularity in recent years due to its many beneficial properties. Inconel parts are suitable for environments that may be subject to water corrosion or oxidation. It is also ideal for applications where parts may be subjected to extreme pressure and heat.

Precision parts processing

In addition to the above materials, there are several materials that are compatible with precision CNC machining processes. These include cemented carbide, tungsten, palladium, invar, nickel, niobium, steel alloys, beryllium, cobalt, iridium and molybdenum, among others. It is important to choose the right material after considering the application area in which it will be used and other processing activities, etc. Selecting the right material from multiple options is critical as it determines the success of the application.


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