OUR MATERIALS

CNC Machining Materials for
Custom Precision Parts

We machine a wide range of metals and engineering plastics for prototype and production parts, including aluminum, stainless steel, titanium, brass, copper and high-performance plastics. Each material is selected based on strength, corrosion resistance, machinability, conductivity and cost requirements for your application.

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Tolerances from ±0.005mm

ISO 9001:2015 certified

Ships to 30+ Countries

What Materials Can Be CNC Machined?

CNC machining can process metals, engineering plastics and selected specialty materials when suitable stock, tooling and machining parameters are available.

Metals

Aluminum, stainless steel, titanium, brass, copper, carbon steel, alloy steel, tool steel, bronze, magnesium and nickel alloys.

Engineering Plastics

PEEK, Delrin, Nylon, PTFE, UHMW-PE, PVC, Acrylic, Polycarbonate, ABS, PPS, PEI and PVDF.

Specialty Materials

Inconel, Hastelloy, beryllium copper, specialty alloys and customer-specified materials.

Materials We Machine

Compare properties and applications to find the right material for your project.

Aluminum CNC Machining

Lightweight, corrosion-resistant and highly machinable. Ideal for aerospace, automotive and electronics housings.

aluminum CNC parts6061 machininglightweight metal

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Stainless Steel CNC Machining

High strength, corrosion resistance and excellent durability for medical, food-grade and industrial applications.

304 316 CNC partsstainless machiningcorrosion resistant

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Titanium CNC Machining

Exceptional strength-to-weight ratio and biocompatibility for aerospace and medical implant components.

titanium machiningmedical implantsaerospace parts

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Brass Parts Manufacturing

Excellent machinability and electrical conductivity for fittings, connectors and precision hardware.

brass CNC partsbrass fittingselectrical components

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Copper Parts Manufacturing

Superior electrical and thermal conductivity for connectors, terminals and heat-management components.

copper machiningelectrical partsthermal components

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Plastic Machining

Engineering-grade plastics (POM, PEEK, Nylon, PTFE) for lightweight, chemical-resistant and insulating parts.

plastic CNC machiningengineering plasticsPOM PEEK

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How to Choose the Right CNC Machining Material

Define the application and mechanical load.

Review weight requirements.

Evaluate corrosion and chemical exposure.

Confirm operating temperature.

Review wear, friction and conductivity.

Define tolerance and surface finish.

Compare cost, stock availability and lead time.

Choose aluminum for lightweight, highly machinable parts.

Choose stainless steel for strength and corrosion resistance.

Choose titanium for high strength-to-weight performance.

Choose brass for fittings and turned parts.

Choose copper for electrical and thermal conductivity.

Choose PEEK for high-temperature plastic parts.

Choose Delrin for low-friction precision components.

Material Comparison

Compare Common CNC Machining Materials

A quick reference to help you choose the right material for strength, corrosion resistance and machinability.

Material	Strength	Weight	Corrosion Resistance	Machinability	Thermal Performance	Relative Cost
Aluminum	Medium-High	Low	Good	Excellent	Good	Low-Medium
Stainless Steel	High	High	Excellent	Medium	Medium	Medium
Titanium	Very High	Medium-Low	Excellent	Difficult	Medium	High
Brass	Medium	Medium-High	Good	Excellent	Good	Medium
Copper	Medium-Low	High	Good	Good	Excellent	Medium-High
PEEK	High for Plastic	Very Low	Excellent	Good	High for Plastic	High
Delrin	Medium	Very Low	Good	Excellent	Moderate	Medium

Recommended CNC Machining Materials by Industry

Aerospace

Aluminum 7075/2024, Titanium Grade 5, stainless steel, PEEK

Medical

Stainless steel 316L, titanium, PEEK, Delrin

Automotive

Aluminum, stainless steel, carbon steel, brass, plastics

Robotics

Aluminum, stainless steel, tool steel, Delrin, Nylon

Electronics

Aluminum, copper, stainless steel, PEEK, PTFE

Food Equipment

Stainless steel 304/316, UHMW-PE, POM

Marine

Stainless steel 316, titanium, naval brass, marine aluminum

Metal vs Plastic CNC Machining

Factor	Metals	Engineering Plastics
Strength	Generally higher	Material dependent
Weight	Higher	Lower
Corrosion Resistance	Alloy dependent	Often excellent
Electrical Behavior	Conductive options	Usually insulating
Typical Parts	Structural and precision components	Insulators, guides, housings and wear parts

Machinability of CNC Materials

Easy to Machine: Aluminum 6061, Brass C360, Delrin, ABS and selected Acrylic grades.

Moderate: Stainless steel 303, Copper C145, carbon steel, Nylon and PEEK.

More Demanding: Titanium Grade 5, Stainless steel 316, tool steel, Inconel, pure copper and PTFE.

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Recommended Surface Finishes by Material

Material	Recommended Finishes
Aluminum	Anodizing, hard anodizing, bead blasting, conversion coating, powder coating
Stainless Steel	Passivation, electropolishing, polishing, brushing, bead blasting
Titanium	Bead blasting, polishing, passivation, anodizing
Brass	Polishing, brushing, nickel, chrome and tin plating
Copper	Polishing, nickel, tin and silver plating
PEEK	As machined, polishing, deburring and laser marking

Choose Materials by Performance Requirement

Lightweight: Aluminum, titanium, magnesium and engineering plastics.

Corrosion Resistant: Stainless steel, titanium, PEEK, PTFE and PVDF.

High Temperature: Titanium, tool steel, Inconel, PEEK, PPS and PEI.

Conductive: Copper, brass and aluminum.

Low Friction: PTFE, Delrin, UHMW-PE and Nylon.

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Material Certificates and Traceability

Material grade confirmation

Mill certificates

Material test reports

Heat or batch traceability

RoHS and REACH support when required

Certificate of conformance

Incoming material inspection

Material Strategy from Prototype to Production

Prototype: Use production-equivalent material when functional testing matters.

Low Volume: Review stock availability, minimum order quantity and required certificates.

Production: Lock material specifications, approved suppliers, traceability and inventory strategy.

Frequently Asked Questions About CNC Machining Materials

What materials can be CNC machined?
Aluminum, stainless steel, titanium, brass, copper, steel, PEEK, Delrin, Nylon, PTFE, Acrylic and many other materials.
What is the easiest metal to CNC machine?
Aluminum 6061 and free-machining brass such as C360 are generally easy to machine.
What is the best aluminum for CNC machining?
6061 is widely used for general parts, while 7075 is selected for higher strength.
Is titanium difficult to machine?
Yes. Titanium requires controlled cutting parameters, sharp tools and heat management.
What is the difference between brass and copper?
Brass is generally easier to machine, while copper provides higher electrical and thermal conductivity.

What plastics can be CNC machined?
PEEK, Delrin, Nylon, PTFE, UHMW, Acrylic, Polycarbonate, ABS, PPS, PEI and PVDF.
What is the best plastic for low friction?
PTFE, Delrin and UHMW-PE are common low-friction options.
What is the best material for heat sinks?
Aluminum is common for lightweight heat sinks, while copper provides higher thermal conductivity.
Do you provide material certificates?
Certificates and traceability can be provided when specified before quotation.
Can you help select a material?
Yes. We can recommend materials based on strength, environment, temperature, tolerance, finish and cost.
How does material affect cost?
Material price, machinability, tool wear, cycle time, availability and finishing affect cost.

CNC Machining Materials for Custom Precision Parts

What Materials Can Be CNC Machined?

Metals

Engineering Plastics

Specialty Materials

Materials We Machine

Aluminum CNC Machining

Stainless Steel CNC Machining

Titanium CNC Machining

Brass Parts Manufacturing

Copper Parts Manufacturing

Plastic Machining

Have drawings ready?

How to Choose the Right CNC Machining Material

Compare Common CNC Machining Materials

Recommended CNC Machining Materials by Industry

Aerospace

Medical

Automotive

Robotics

Electronics

Food Equipment

Marine

Metal vs Plastic CNC Machining

Machinability of CNC Materials

Recommended Surface Finishes by Material

Choose Materials by Performance Requirement

Material Certificates and Traceability

Material Strategy from Prototype to Production

Frequently Asked Questions About CNC Machining Materials

What materials can be CNC machined?

What is the easiest metal to CNC machine?

What is the best aluminum for CNC machining?

Is titanium difficult to machine?

What is the difference between brass and copper?

What plastics can be CNC machined?

What is the best plastic for low friction?

What is the best material for heat sinks?

Do you provide material certificates?

Can you help select a material?

How does material affect cost?

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CNC Machining Materials for
Custom Precision Parts