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CNC Machining Materials

We machine 50+ engineering-grade metals and plastics — from common aluminum alloys to high-performance PEEK and titanium. Choose the right material for strength, weight, thermal resistance, or cost, and we'll deliver precision parts that meet your specifications.

Metals

Metal Materials for CNC Machining

High-strength metals for functional prototypes and production parts

Metal

Aluminum6061 · 7075 · 5052 · 2024

The most popular CNC machining material — lightweight, corrosion-resistant, and easy to machine. Excellent strength-to-weight ratio for aerospace, automotive, and consumer products.

Density: 2.7 g/cm³
Hardness: 60–150 HB
Machinability: Excellent
Finish: Anodize, polish
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Metal

Stainless Steel304 · 316 · 303 · 17-4PH

Superior corrosion resistance and strength for medical devices, food processing equipment, marine components, and chemical handling. 316 offers enhanced resistance to chlorides.

Density: 7.9 g/cm³
Hardness: 150–300 HB
Machinability: Moderate
Finish: Polish, passivate
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Metal

TitaniumGrade 2 · Grade 5 (Ti-6Al-4V)

Exceptional strength-to-weight ratio and biocompatibility. The material of choice for aerospace structural parts, medical implants, and high-performance sporting goods.

Density: 4.5 g/cm³
Hardness: 200–350 HB
Machinability: Challenging
Finish: Anodize, PVD
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Metal

BrassC360 · C260

Outstanding machinability, natural corrosion resistance, and attractive gold-like appearance. Widely used for electrical connectors, valves, fittings, and decorative hardware.

Density: 8.5 g/cm³
Hardness: 60–120 HB
Machinability: Excellent
Finish: Polish, plate
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Metal

CopperC110 · C101

Best-in-class thermal and electrical conductivity. Used for heat sinks, bus bars, electrodes, and RF shielding components requiring maximum conductivity.

Density: 8.9 g/cm³
Hardness: 40–110 HB
Machinability: Good
Finish: Plate, passivate
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Metal

Mild & Carbon Steel1018 · 1045 · 4140 · A36

Cost-effective and readily available with good machinability. Ideal for structural parts, jigs, fixtures, and components requiring case hardening or heat treatment.

Density: 7.8 g/cm³
Hardness: 120–300 HB
Machinability: Good
Finish: Powder coat, plate
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Plastics

Plastic Materials for CNC Machining

Engineering-grade thermoplastics for functional testing and end-use applications

Plastic

ABSAcrylonitrile Butadiene Styrene

Impact-resistant, easy to machine, and cost-effective. The go-to plastic for consumer product prototypes, enclosures, and snap-fit assemblies.

Density: 1.04 g/cm³
Heat resist: 85°C
Machinability: Excellent
Finish: Paint, polish
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Plastic

Acrylic (PMMA)Polymethyl Methacrylate

Excellent optical clarity (92% light transmission) and UV stability. Perfect for light guides, lenses, display windows, and automotive lighting prototypes.

Density: 1.18 g/cm³
Heat resist: 80°C
Machinability: Excellent
Finish: Flame polish
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Plastic

Delrin (POM)Polyoxymethylene / Acetal

Low friction, high stiffness, and excellent dimensional stability. Ideal for gears, bearings, bushings, and precision mechanical components.

Density: 1.41 g/cm³
Heat resist: 110°C
Machinability: Excellent
Finish: As-machined
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Plastic

Polycarbonate (PC)Lexan · Makrolon

Exceptional impact strength (250× glass) with good optical clarity. Used for protective covers, safety shields, transparent housings, and lighting components.

Density: 1.20 g/cm³
Heat resist: 130°C
Machinability: Good
Finish: Polish, vapor
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Plastic

Nylon (PA)PA6 · PA66 · PA6+GF30

High wear resistance and mechanical strength with self-lubricating properties. Used for gears, cable ties, structural brackets, and wear-resistant components.

Density: 1.14 g/cm³
Heat resist: 120°C
Machinability: Good
Finish: Dye, as-machined
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Plastic

PEEKPolyetheretherketone

The highest-performance engineering plastic — extreme heat resistance, chemical inertness, and biocompatibility. Used in aerospace, medical implants, and semiconductor tooling.

Density: 1.30 g/cm³
Heat resist: 260°C
Machinability: Moderate
Finish: As-machined
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Reference

Material Properties at a Glance

Compare key properties across all materials to find the best fit for your project

Material Type Strength Weight Heat resist Machinability Cost
Aluminum 6061 Metal ●●●○○ Light 170°C ★★★★★ $
Stainless 304 Metal ●●●●○ Heavy 870°C ★★★☆☆ $$
Titanium Gr5 Metal ●●●●● Medium 400°C ★★☆☆☆ $$$$
Brass C360 Metal ●●○○○ Heavy 200°C ★★★★★ $
Mild Steel 1045 Metal ●●●●○ Heavy 500°C ★★★★☆ $
ABS Plastic ●●○○○ Light 85°C ★★★★★ $
Acrylic (PMMA) Plastic ●○○○○ Light 80°C ★★★★★ $
Delrin (POM) Plastic ●●●○○ Light 110°C ★★★★★ $
Polycarbonate Plastic ●●●○○ Light 130°C ★★★★☆ $$
PEEK Plastic ●●●●○ Light 260°C ★★★☆☆ $$$$

Not sure which material to choose?

Send us your design files and our engineers will recommend the best material for your application, tolerance, and budget.

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Technical Sales

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Technical Sales

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Technical Sales

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