Ceramic filled PEEK

TECAPEEK CMF is a composite material based on Victrex® PEEK 450G polymer, that is filled with ceramic. This materials has been specifically designed with the requirements of the semiconductor industry in mind. Because of the often intricate designs necessary for parts such as test sockets, TECAPEEK CMF has been designed with ceramic fillers to be very dimensionally stable and machinable with tightest tolerances. Ceramic filled PEEK resists the formation of burrs during machining and does not absorb moisture, allowing for more accurate and precise dimensions of even the smallest geometries, without the necessity of secondary de-burring operations. The characteristic profile of this ceramic filled PEEK is unique. Besides providing outstanding hardness and rigidity, the silicate ceramic within the plastic material also provides an effective barrier against gas and fluid permeation. The ceramic platelets distributed evenly in the material extend the diffusion path for fluids and gases. The outstanding properties of PEEK natural such as excellent thermal resistance and good processing properties are retained by TECAPEEK CMF. TECAPEEK CMF with ceramic filler is offered in white or grey pigment to allow for a choice if color is part of the design criteria.


Chemical designation
PEEK (Polyetheretherketone)
1,63 g/cm3

Main Features

  • high dimensional stability
  • good machinability
  • high strength
  • high stiffness
  • low thermal expansion
  • low burring
  • good heat deflection temperature
  • very good thermal stability

Target industries

Technical details

  • product-technical-detail-collapse-item-0-lvl-1
    Mechanical properties Value Unit Condition Test Method
    Tensile strength at yield 14,122 psi @ 73 °F ASTM D 638
    Elongation at break (tensile test) 4.85 % @ 73 °F ASTM D 638
    Modulus of elasticity
    (tensile test)
    1,227,111 psi @ 73 °F ASTM D 638
    Flexural strength 23,642 psi @ 73 °F ASTM D 790
    Modulus of elasticity
    (flexural test)
    783,585 psi @ 73 °F ASTM D 790
    Compression strength 1,855 psi @ 73 °F ASTM D 695
    Compression strength 20,712 psi @ 73 °F ASTM D 695
    Compression modulus 335,369 psi @ 73 °F ASTM D 695
    Impact strength (Izod) 0.66 ftlbsin @ 73 °F ASTM D 256
    Impact strength (Izod) 15.23 ftlbsin @ 73 °F ASTM D 256
    Rockwell hardness 102 - M-Scale ASTM D 785
    Tensile strength at break 15,200 psi 50 mm/min DIN EN ISO 527-2
    Elongation at yield (tensile test) 3 % 50 mm/min DIN EN ISO 527-1
  • product-technical-detail-collapse-item-1-lvl-1
    Thermal properties Value Unit Condition Test Method
    Melting temperature 643 F -
    Thermal expansion (CLTE) 3.10 *10^-5 in/in / degre ASTM E 831
    Thermal conductivity 2.60 BTU-in/hr-ft^2 - deg ASTM E1530
    Service temperature 500 F Long Term -
    Service temperature 500 F short term -
  • product-technical-detail-collapse-item-2-lvl-1
    Electrical properties Value Unit Condition Test Method
    Dielectric strength 168 V/mil S/T, in oil ASTM D 149
    Dielectric constant 4.71 - 1 MHz dry ASTM D 150
    Dissipation factor 0.0032 - 1 MHz dry ASTM D 150
    Volume resistivity 3.5E+15 Ohm/square ASTM D 257
    surface resistivity 5.2E+15 - ASTM D 257
  • product-technical-detail-collapse-item-3-lvl-1
    Other properties Value Unit Condition Test Method
    Moisture absorption 0.06 % @ 24 hrs -
    Flammability (UL94) V0 - -

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