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. Additionally, 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 colours available
greenivorygreyblueblacklight yellow
1,31 g/cm3

Main Features

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

Target industries

Technical details

  • Mechanical properties
    Mechanical propertiesValueUnitParameterNorm
    Modulus of elasticity
    (tensile test)
    4200MPa1mm/minDIN EN ISO 527-2
    Tensile strength116MPa50mm/minDIN EN ISO 527-2
    Tensile strength at yield116MPa50mm/minDIN EN ISO 527-2
    Elongation at yield5%50mm/minDIN EN ISO 527-2
    Elongation at break (tensile test)15%50mm/minDIN EN ISO 527-2
    Flexural strength175MPa2mm/min, 10 NDIN EN ISO 178
    Modulus of elasticity
    (flexural test)
    4200MPa2mm/min, 10 NDIN EN ISO 178
    Compression strength23/43/102MPa1% / 2% / 5%EN ISO 604
    Compression modulus3400MPa5mm/min, 10 NEN ISO 604
    Impact strength (Charpy)n.b.kJ/m2max. 7,5JDIN EN ISO 179-1eU
    Notched impact strength (Charpy)4kJ/m2max. 7,5JDIN EN ISO 179-1eA
    Ball indentation hardness253MPaISO 2039-1
  • Thermal properties
    Thermal propertiesValueUnitParameterNorm
    Glass transition temperature150CDIN EN ISO 11357
    Melting temperature342CDIN EN ISO 11357
    Service temperature300Cshort termNN
    Service temperature260Clong termNN
    Thermal expansion (CLTE)510-5*1/K23-60°C, long.DIN EN ISO 11359-1;2
    Thermal expansion (CLTE)510-5*1/K23-100°C, long.DIN EN ISO 11359-1;2
    Thermal conductivity0.27W/(k*m)ISO 22007-4:2008
    Specific heat1.1J/(g*K)ISO 22007-4:2008
    Thermal expansion (CLTE)710-5*1/K100-150°C, long.DIN EN ISO 11359-1;2
  • Electrical properties
    Electrical propertiesValueUnitParameterNorm
    surface resistivity1014ODIN IEC 60093
    volume resistivity1014O*cmDIN IEC 60093
  • Other properties
    Other propertiesValueUnitParameterNorm
    Resistance to hot water/ bases+--
    Flammability (UL94)V0-listed (value at 1.5mm)DIN IEC 60695-11-10;
    Resistance to weathering---
    Water absorption0.03%24h / 96h (23°C)DIN EN ISO 62

Stock program