Material datasheet · High-performance semi-crystalline thermoplastic
PolyEtherEtherKetone
UNS — · Extruded or compression-molded; stress-relief annealing for tight tolerances
Premium engineering thermoplastic. Continuous service to 250°C. The non-metal answer for harsh environments.
Chemical composition
Nominal % by weight.
| Element | % by wt |
|---|---|
| Polyetheretherketone | — |
Applicable specifications
AMS / ASTM / MIL.
- ASTM D6262 (PAEK basic shapes)
- Victrex 450G
- USP Class VI
- ASTM F2026 (medical implant)
Machining guidance
CNC parameters and tooling.
Sharp polished carbide; PCD for high-volume
Anneal stock at 400°F before machining for stability. Glass/carbon-filled grades wear tools faster.
Stock & cost
Forms and Q1 2026 pricing.
- Color (PEEK 450G natural beige; pigmented grades available)
Typical applications
Where PEEK is the right pick.
- Aerospace seals & bearings
- Medical implants (spinal cages)
- Semiconductor wafer handlers
- Oil & gas downhole
Alternative materials
Substitute or upgrade options.
- Ultem (cheaper, lower T)
- PI Vespel (higher T, lower strength)
- PPS (chemical resistance)
True Precision Machining · Buellton, CA
Machine your part in PEEK.
5-axis CNC · ISO 9001 · AS9100 · ITAR · CMMC-compliant · DFARS-compliant supply chain. AS9102 FAI on aerospace.
Technically reviewed by the True Precision Machining engineering team · Last reviewed June 2026
Standards referenced: ASTM D6262 (PAEK basic shapes), Victrex 450G, USP Class VI, ASTM F2026 (medical implant)
Keep exploring
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Aerospace specs that call out this alloy.