Polyetheretherketone (PEEK) is a semicrystalline high-performance thermoplastic that offers exceptionally high strength and toughness over a wide range of temperatures. PEEK maintains its properties when exposed to temperature extremes, moisture, chemical attack or physical stress.

Property Measure Low Measure High
Specific gravity 0.0470 lb./in.3 (1.30 g/cc) 0.0470 lb./in.3 (1.30 g/cc)
Melting point 644°F (340°C) 649°F (343°C)
Glass transition temperature 289°C (143°C) 289°C (143°C)
Tensile strength at break 16000 psi (110.3 MPa) 16000 psi (110.3 MPa)
Elongation at break 50% 60%
Hardness durometer (Rockwell M) 99 99
Hardness durometer (Rockwell R) 126 126
Water absorption @ 24 hours 0.5% 0.5%
Sterilization Ethylene oxide (EtO)
Gamma radiation
Steam autoclaving
Vaporized hydrogen peroxide

This material data sheet is presented for reference only. For a specific application and environment, characteristics and performance may vary. Product design and suitability for use are the sole responsibility of Microspec’s customer. Microspec strongly urges customers to consult with the material manufacturer.