TECAPEEK® MT natural polyetheretherketone

Unfilled PEEK medical

Medical PEEK natural is suitable for use in medical applications and combines the excellent property profile of standard PEEK with requirements for biocompatibility. Victrex® PEEK polymer is used for these materials and processed in compliance with the relevant product quality requirements for use in medical applications. The respective stock shapes are tested  for their biocompatibility according to ISO 10993, and show exceptional resistance to repeated steam autoclaving without loss of dimensional stability or physical properties. In addition, TECAPEEK MT natural is tested according to USP Class VI.  TECAPEEK MT can be ordered in a wide range of color options and dimensions. TECAPEEK MT XRO is made with a contrast additive, that makes it suitable for minimally invasive surgical procedures as an X-ray opaque material.


Chemical designation
PEEK (Polyetheretherketone)
Alternative colors available
1,31 g/cm3

Main Features

  • very good sterilisable
  • good slide and wear properties
  • hydrolysis and superheated steam resistant
  • excellent chemical resistance
  • high creep resistance
  • very good stress cracking resistance
  • good machinability
  • resistance against high energy radiation

Target industries

Technical details

  • Mechanical properties
    Mechanical propertiesValueUnitConditionTest Method
    Coefficient of friction0.20-@ 68 °FASTM D 3702
    Rockwell hardness99lbs/in^2M ScaleASTM D 785
    Notched impact strength (Izod)0.95ftlbsin@ 73 °FASTM D 256
    Modulus of elasticity
    (flexural test)
    600,000psi@ 73 °FASTM D 790
    Flexural strength26,000psi@ 73 °FASTM D 790
    Elongation at yield4.9%@ 73 °FASTM D 638
    Elongation at break30%@ 73 °FASTM D 638
    Tensile strength at yield16,000psi@ 73 °FASTM D 638
    Modulus of elasticity
    (tensile test)
    650,000psi1% Sec, 73 °FASTM D 638
    Compression strength20,000psi@ 73 °FASTM D 695
    Wear (K) factor200*10^-10 in^3 - min/f40 psi, 50 fpmASTM D 3702
    Tensile strength at break8,900psi@ 73 °FASTM D 638
    Compression modulus493,000psi@ 73 °FASTM D 695
    Coefficient of friction-@ 68 °F,ASTM D 3702
  • Thermal properties
    Thermal propertiesValueUnitConditionTest Method
    Thermal conductivity2.01BTU-in/hr-ft^2 - degISO 22007-4:2008
    Deflection temperature320F@264 psiASTM D 648
    Service temperature480FLong Term-
    Melting temperature633F-
    Thermal expansion (CLTE)2.5*10^-5 in/in / degre< Tg, along fllowDIN EN ISO 11359-1;2
    Service temperature572Fshort term-
  • Electrical properties
    Electrical propertiesValueUnitConditionTest Method
    Dielectric strength630V/mil0.1" thick IEC 60243-1-
    surface resistivity1.0*1016Ohm/squareASTM D 257
    Volume resistivity4.9*1016O*cm@ 73 °FASTM D 149
    Dielectric constant2.8-@ 73 °F, 1 kHzDIN IEC 60250
    Dissipation factor0.003-@ 73 °F, 1 MHzDIN IEC 60250
  • Other properties
    Other propertiesValueUnitConditionTest Method
    Moisture absorption0.45%@ saturation, 73 °FDIN EN ISO 62
    Flammability (UL94)V0--
    Moisture absorption0.02%@ 24 hrs, 73 °FASTM D 570
    Limiting PV69000psi-fpmASTM D 3702

Stock program