PEEK (Polyetheretherketone) is a high-temperature, high-purity thermoplastic that delivers metal-like mechanical properties and extreme chemical resistance for semiconductor and aerospace applications.
Engineering Specifications & Parameters
Density
1.32 g/cm³
Cutting Speed
100 - 250 m/min
Machinability
70% (Good)
Melting Point
343 °C (649 °F)
Tensile Strength
100 MPa
Precision PEEK Guidelines
PEEK is prone to internal stress accumulation. Multi-stage thermal annealing before and between machining cycles is standard practice for tight-tolerance aerospace parts.
Machining Setup
Tooling: Diamond-coated (PCD) or uncoated micro-grain carbide.
Coolant: Air blast or pure deionized water coolant (avoid mineral oils in medical/semi applications).
Frequently Asked Questions
Is annealing required when CNC machining PEEK?
Yes, intermediate annealing relieves internal stresses and prevents micro-cracks and post-machining dimensional drift.
