Material Selection Guide: Aluminum, Stainless Steel, and Titanium Alloy Comparison
Compare aluminum, stainless steel, and titanium for CNC machining. Analyze strength, weight, cost
High-temperature specialty engineering plastic for extreme duty
PEEK (Polyetheretherketone) is a premium high-performance thermoplastic that offers an exceptional combination of mechanical strength, thermal stability, and chemical resistance. It is used in the most demanding applications across medical, aerospace, semiconductor, and oil & gas industries.
PEEK maintains its mechanical properties at temperatures up to 250°C (continuous use) and offers excellent resistance to a wide range of chemicals, including acids, bases, and organic solvents. It is biocompatible (USP Class VI) and can be sterilized by all standard methods.
While more expensive than other engineering plastics, PEEK delivers unmatched performance in critical applications. It is available in bearing-grade (with PTFE/graphite additives), carbon-fiber reinforced, and glass-fiber reinforced variants for specific performance requirements.
The following table lists typical mechanical, thermal, and physical properties for this material. Actual values may vary by grade and temper.
| Property | Value | Unit |
|---|
We stock multiple grades for different application needs. Each grade offers distinct properties optimised for specific uses — click to view detailed specifications, machining advice and typical applications.
Unfilled PEEK with excellent mechanical, chemical, and thermal stability; widely applied in medical, aerospace, and industrial fields.
View Details High StiffnessReinforced with 30% glass fiber for higher stiffness and dimensional stability; used in high-temperature structural parts.
View Details Ultra High StrengthReinforced with 30% carbon fiber for maximum strength-to-weight ratio; used in aerospace and high-performance applications.
View Details Bearing GradeModified with PTFE, carbon, and graphite for outstanding wear resistance; used in bearings and seals.
View Details Medical GradeUSP Class VI and ISO 10993 compliant, biocompatible, suitable for long-term implantation; used in spinal cages and orthopedic devices.
View Details Food GradeFDA food-contact compliant, steam-sterilizable; used in food processing equipment.
View DetailsThis material is widely used across multiple industries for various applications, from precision prototypes to end-use production parts.
Surgical instruments, housings
Structural brackets, panels
Engine components, housings
Heat sinks, enclosures
Motor mounts, brackets
Fixtures, jigs, tooling
Frames, handles, cases
Fittings, valves, hardware
| Finish Type | Description | Ra (typical) |
|---|
The questions engineers ask most about machining, surface quality and selecting this material.
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