CNC Machining for PEEK Parts

PEEK parts are high-temperature engineering thermoplastics that maintain excellent flexural, impact, and tensile characteristics

What is PEEK?

Using PEEK materials (chemically known as polyetheretherketone) is ideal for a wide spectrum of CNC machining applications where thermal, chemical, and combustion properties are critical to performance. 

Whether in a sheet, rod, tube, or film, PEEK is a high-performance material that can be cut to size and used for a variety of CNC machining projects.

Benefits of PEEK for CNC Machining

The primary benefit of PEEK is its ability to retain its flexural and tensile properties at extremely high temperatures. It maintains those required properties when exposed to temperatures in excess of 482 degrees F. When glass fiber or carbon fiber reinforcements are added, that significantly enhances the mechanical and thermal properties of PEEK material.

  • Outstanding flexural, tensile, and impact characteristics
  • Substantial continuous working temperature
  • High continuous working temperature
  • High heat distortion temperature
  • Strong chemical resistance
  • Superior dielectric at high temperatures and frequencies
  • Exceptional radiation resistance
  • Excellent wear and abrasion resistance
  • Low emissions of smoke and toxic gas
  • Strong hydrolysis resistance

PEEK Machining for Industrial Applications

Due to PEEK’s exceptional property profile, it is used in many critical areas throughout the generalized industry. PEEK materials are featured prominently within the automotive, medical, electronics, marine, nuclear, construction, transportation, sign and lighting, mining, manufacturing, pharmaceutical, earth moving equipment, energy and power, and aerospace fields.

PEEK materials have proven to be a highly popular plastics material throughout the industrial world, due to its proven resistance to wear, heat, and radiation, as well as its low levels of flammability, and low smoke and toxic gas emissions.

Example parts include:
  • Bearings
  • Thrust washers and seals
  • Piston parts
  • Semiconductor fabrication
  • Pumps
  • Compressor plate valves
  • Cable insulation
  • Ultra-high vacuum applications

PEEK Material Properties

  Tensile Strength Impact Strength Tensile Modulus Heat Deflection More Information
PEEK 14,000 PSI 1.55 ft-lbs/in 552,100 285-482° F Data Sheet



If you have any issues getting your guide, click here to download.

CNC Machining Design Guide

In this guide to CNC machining, you'll learn how to create efficient, manufacturable metal and plastic parts for prototyping and production.