CNC Machining Materials

We can manufacture your prototypes and parts out of most CNC machining materials on the open market. If you submit a special request, we can use a specific material that you provide. 

About CNC Materials - metal and plastics

CNC machining can produce parts from almost any metal or plastic. The common material used when CNC machining are listed in the below tables, along with their applications.

Also, you can check out matweb.com, an online searchable materials property database, for very specific information regarding materials.

If you require a material that is not on the list or have specific questions, please feel free to contact us.

CNC machining materials

CNC metal:

The below list shows the most commonly use metal for CNC machining parts and prototypes,

MaterialOverviewGradeDescriptionTypical applications
Aluminum alloysAluminum alloys have a high strength-to-weight ratio, good ductility, good corrosion resistance, availability and low cost. They can be easily machined and can be anodized, creating a hard, protective layer on their surface, so theyare the most widely used non-ferrous metals in producing custom metal parts and prototypes.Aluminum 6061It is with Medium strength.Containes magnesium and silicon, good formability, weldability and excellent machinability.General purpose
Aircraft components
Automotive parts
Bicycle frames
Food containers
Aluminum 6082It has similar composition and material properties to 6061. It is more commonly used in Europe, as it is compliant with British Standards.General purpose
Automotive parts
Food containers
Aluminum 7075It has higher strength than 6061,also has excellent fatigue properties and can be heat treated to high strength and hardness, comparable to steels.Aircraft components
Aerospace components
Automotive parts
Marine applications
Sports equipment
Stainless steelStainless steels have a high resistance to corrosion,high strength, high ductility, and can be easily welded, machined and polished. Depending on their composition, they can be either (essentially) non-magnetic or magnetic.Stainless steel 304it is most commonly used stainless steel,low carbon, and has excellent mechanical properties and good machinability. It is
resistant to most environmental condition and corrosive media.
General purpose
Medical devices
Food industry
Marine applications
Chemical processing
Stainless steel 316It is another common stainless steel alloy with similar mechanical properties to 304,but has a higher corrosion and chemical resistance than 304.Food preparation equipment
Marine applications
Aerospace components
Surgical implants
Chemical containers
Stainless steel 17-4It has higher magnetism than 304 and 316, It can be precipitation hardened to a very high
degree,also has better oxidation and corrosion resistance.
Turbine blades
Marine applications
Chemical vessels
Oil & Gas
Nuclear applications
Mild steelMild steel is also known as low-carbon steels,it has a relatively low tensile strength, but it is cheap and easy to form,surface hardness can be increased through carburizing.Mild steel 1018It is a plain low carbon steel with good machinability and
weldability
General purpose
Machinery parts
Jigs & fixtures
Mild steel 12L14A low carbon mild steel with added lead. Excellent machinability, suitable for machining using both automatic and CNC machines.General purpose
Machinery parts
Alloy steelAlloy steel is steel that is alloyed with a variety of elements in total amounts between 1.0% and 50% by weight to improve its mechanical properties. Alloy steels are broken down into two groups: low alloy steels and high alloy steels.Alloy steel 4140It is a versatile alloy with good atmospheric corrosion resistance and reasonable strength. It shows good overall combinations of strength, toughness, wear resistance and fatigue strength.General purpose
Machinery parts
Tooling
Alloy steel 4340It is a nickel-chromium-molybdenum alloy steel known for its toughness and its ability to attain high strengths in the heat-treated condition. It has very good fatigue resistance.Aircraft landing gear
Transmission gear
Tooling
BrassBrass is mainly an alloy that consists of copper with zinc added. Brasses can have varying amounts of zinc or other elements added. These varying mixtures produce a wide range of properties and variation in color.C260It has the highest ductility in the yellow brass series. It is an attractive material with a smooth, yellow brass finish and it can have a polished or brushed (satin) finish.Automotive parts
Valves & nozzles
Architecture Electrical parts Plumbing
C36000It is known as Free Cutting Brass/ Free Machining Brass,It has good resistance to corrosion.It is ideally suited for high speed machining operations with its superior machinability, thread rolling and knurling characteristics.Automotive parts
Valves & nozzles
Architecture Electrical parts Plumbing

CNC plastics:

The below list shows the most commonly use plastic for CNC machining parts and prototypes,

MaterialOverviewGradeDescriptionTypical applications
ABSABS is a common thermoplastic polymer materials offering good mechanical properties, excellent impact strength, high heat resistance and good machinability.ABSIt has low density, making it ideal for lightweight applications. CNC machined ABS parts are often used as prototypes prior to mass-production with injection molding.Automotive
Electronic enclosures
Pipes & fittings
Consumer products
NylonNylon is also known as polyamide (PA) and is a thermoplastic that is often used for engineering applications, due to its excellent mechanical properties, good impact strength and high chemical and abrasion resistance. It is susceptible to water and moisture absorption though.Nylon 66It is common use Nylon with
Fair flame resistance and good machinability
Automotive parts
Mechanical parts
Fasteners
Polycarbonate(PC)Polycarbonates (PC) are a group of thermoplastic polymers containing carbonate groups in their chemical structures.PCPolycarbonates used in engineering are strong, tough materials, and some grades are optically transparent.It has very good heat resistance and can be combined with flame retardant materials without significant material degradation.Lenses in eyewear
Automotive components
Enclosures
Food containers Lighting fixtures
Polyoxymethylene(POM)Delrin, Acetal, and its many trade names is a material properly known as Polyoxymethylene or POM. It is one of the strongest plastics and is a good go-to material when you want the best properties of plastic, and don’t need the full strength of a metal part.POM(Delrin)It is often the best choice when CNC machining plastic parts that require high precision, high stiffness, low friction, excellent dimensional stability at elevated temperatures and very low water absorption.Mechanical parts
Electronic enclosures
Bushings & fittings
Polytetrafluoroethylene (PTFE)Polytetrafluoroethylene (PTFE) is a synthetic fluoropolymer of tetrafluoroethylene that has numerous applications. The well-known brand name of PTFE-based formulas is Teflon by Chemours.PTFE (Teflon)It is a strong, tough, waxy, nonflammable synthetic resin.It is one of the few plastics that can withstand operational temperatures above 200oC and is an outstanding electrical insulator.High temperature applications
Chemical processing
Electronic enclosures
Food processing
High-density polyethylene (HDPE)HDPE is a thermoplastic polymer produced from the monomer ethylene.HDPEIt is a thermoplastic with a high strength-to-weight ratio, high impact strength, and good weather resistance.Suitable for outdoor use and piping. Like ABS, it is often used to create prototypes before Injection Molding.Chemical containers
Pipes & fittings
Consumer products