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CNC Machining Materials

PEEK

High-performance thermoplastic for continuous use near 250 °C.

Material

Plastic

Process

CNC Milling

Color

Natural tan

Hardness

Rockwell M 105

Price

$$$$$

PEEK

Available Colors

1 colors

Natural tan

Swatches are approximate on-screen representations; actual color may vary. Not all colors are stocked at all times — confirm availability and lead time with us before ordering.

Overview

PEEK (polyetheretherketone) is a semi-crystalline high-performance plastic with outstanding temperature, chemical and wear resistance, and strength close to some light metals at a fraction of the weight.

Our reference grade is unfilled extruded Ketron 1000 PEEK in its natural tan color.

Key Properties

Typical values from the MatWeb datasheet for Mitsubishi Chemical Advanced Materials Ketron™ 1000 PEEK, Extruded Unfilled Polyetherether Ketone. Machined parts take the properties of the stock they are cut from.

PropertyValue
Density1.31 g/cm³
Tensile strength115 MPa
HardnessRockwell M 105
Thermal conductivity0.25 W/m-K
Max service temp. (continuous, air)249 °C
Heat deflection temp. @ 1.8 MPa160 °C
Melting range340 °C

Typical Applications

  • Semiconductor and wafer-handling parts
  • Medical and sterilizable components
  • Aerospace interior and insulators
  • High-temperature bushings and seals

Machining Notes

Very expensive stock, so material cost dominates on larger parts. Annealing may be recommended for tight-tolerance parts.