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

  • Mechanical properties
    Mechanical propertiesValueUnitConditionTest Method
    Tensile strength at yield14,122psi@ 73 °FASTM D 638
    Elongation at break4.85%@ 73 °FASTM D 638
    Modulus of elasticity
    (tensile test)
    1,227,111psi@ 73 °FASTM D 638
    Flexural strength23,642psi@ 73 °FASTM D 790
    Modulus of elasticity
    (flexural test)
    783,585psi@ 73 °FASTM D 790
    Compression strength1,855psi@ 73 °FASTM D 695
    Compression strength20,712psi@ 73 °FASTM D 695
    Compression modulus335,369psi@ 73 °FASTM D 695
    Impact strength (Izod)0.66ftlbsin@ 73 °FASTM D 256
    Impact strength (Izod)15.23ftlbsin@ 73 °FASTM D 256
    Rockwell hardness102-M-ScaleASTM D 785
    Tensile strength at break15,200psi50 mm/minDIN EN ISO 527-2
    Elongation at yield3%50 mm/minDIN EN ISO 527-1
  • Thermal properties
    Thermal propertiesValueUnitConditionTest Method
    Melting temperature643F-
    Deflection temperature551F@ 66 psiASTM D 648
    Thermal expansion (CLTE)3.10*10^-5 in/in / degreASTM E 831
    Thermal conductivity2.60BTU-in/hr-ft^2 - degASTM E1530
    Deflection temperature572F@ 264 psiASTM D 648
    Service temperature500FLong Term-
    Service temperature500Fshort term-
  • Electrical properties
    Electrical propertiesValueUnitConditionTest Method
    Dielectric strength168V/milS/T, in oilASTM D 149
    Dielectric constant4.71-1 MHz dryASTM D 150
    Dissipation factor0.0032-1 MHz dryASTM D 150
    Volume resistivity3.5E+15Ohm/squareASTM D 257
    surface resistivity5.2E+15-ASTM D 257
  • Other properties
    Other propertiesValueUnitConditionTest Method
    Moisture absorption0.06%@ 24 hrs-
    Flammability (UL94)V0--

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