Properties and Benefits of PEEK Material

Polyetheretherketone (PEEK) is a linear, aromatic, semi-crystalline polymer that exhibits excellent mechanical and thermal properties. Several grades of PEEK™ such as Virgin PEEK™, 30% Glass Filled PEEK™, 30% Carbon Filled PEEK™, and Bearing Grade PEEK™ are preferred for applications in demanding environments. PEEK rods, sheets, and machine parts are sought after for applications across industries. This post aims to discuss PEEK’s properties and benefits, which in turn helps you use the material wisely in applications.

Peek materials

Know About the Properties of PEEK Materials

The following table depicts the general mechanical, thermal and electrical properties of Polyetheretherketone.

Mechanical Property Unit 450G 450GL30 450CA30
Coefficient of Friction
Flexural Modulus, 23°C psi 594,500 1,450,000 2,900,000
Specific Gravity 1.32 1.49 1.44
Melt Flow Rate g/10 min 3-3.5 1.2-1.5 1.2-1.5 0.48-0.56
Rockwell Hardness, R scale R 126 124 124
Impact Strength, 23°C, Notched Izod ft-lb/in 1.57 1.8 1.59
Water Absorption, 24 hr. % 0.5 0.11 0.06
Elongation, 23°C % 50 2.2 1.3
Tensile Strength, 23°C psi 14,500 24,650 32,770
Thermal Properties
Melting Point °C 340 340 340
Deflection Temperature (264 psi) °C 160 315 276
Oxygen Index % 24
Max. Service Temperature °C 250 250 250
Thermal Conductivity Btu-in/hr-ft2-F 1.75 0.43 0.24
Flammability V-O V-O V-O
Electrical property
Surface Resistivity ohm-sq
Volume Resistivity ohm-cm 4.9 x 1016
Dielectric Strength (0.05 mil film) KV/cm 190
Dielectric Constant, 21°C, 50 Hz-10 kHz 3.2-3.3
Dissipation Factor, 21°C, 1 MHz 0.003
Arc Resistance sec


Benefits of Using PEEK Material

Thermoplastic PEEK offers exceptional performance over a wide range of temperatures. The following are a few other beneficial features of polyetheretherketone.

  • Excellent chemical resistance
  • Low moisture absorption
  • Good wear and abrasion resistance
  • High-temperature tenacity
  • Long lifespan
  • Excellent heat distortion properties
  • Low coefficient of friction
  • Good radiation resistance
  • Ease of processing
  • Environmentally friendly
  • Low flammability
  • Good resistance to hydrolysis
  • Resistance to thermal aging
  • Resilient when exposed to boiling water and hot steam
  • Very low smoke and toxic gas emission when exposed to flame

Typical Application Areas

Owing to the superb benefits and features of polyetheretherketone as aforementioned, the material is largely chosen for applications in marine, automobile, medical, food processing, defense, and oil and gas industries among others. A few examples of the parts manufactured using the material include:

  • Oil and vacuum pumps
  • Seals and supporting rings
  • Hydraulic valves
  • Gears
  • Thrust washers
  • switching jack
  • Plug connectors
  • Wafer carriers
  • Valve seats
  • Pump wear parts
  • Food contact parts

Having said the benefits and applications of thermoplastic PEEK, would you like to transform PEEK material into parts with strict specifications? There are several manufacturers who possess ample knowledge of working with the material, which enables them to produce parts to strict specifications to support the application equipment performance. SSP Manufacturing, Inc is one such leading manufacturers who have expertise in creating PEEK parts for filling equipment, pharmaceutical equipment, and lab work or other specific applications.

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