TECAPEEK ® ST

PEKEKK - polyetherketonetherketoneketone

TECAPEEK ST black is a high temperature semi crystalline thermoplastic based on polyetherketonetherketoneketone (PEKEKK). TECAPEEK ST black is manufactured by Ensinger using VICTREX ST™ polymer. Due to its high glass transition temperature, excellent mechanical properties can be observed, even when the part is subjected to thermal loads. Furthermore, the material PEKEKK also satisfies requirements with regard to process ability, purity and chemical resistance. Compared to TECAPEEK (PEEK) and TECAPEEK HT (PEK), the melt, glass transition temperature, and overall strength levels of TECAPEEK ST (PEKEKK) are noticeably higher, as is the mechanical loading capacity. Machined components made of PEKEKK often combine better strength and stiffness, as well as higher flexural strength, and also benefit from a higher heat deflection temperature.

Facts

Chemical designation
PEKEKK (Polyetherketoneetherketoneketone)
Color
black
Density
1,32 g/cm3

Main Features

  • made exclusively from Victrex® resin
  • high heat deflection temperature
  • excellent mechanical properties
  • excellent chemical resistance
  • easy to machine
  • good dimensional stability
  • electrically insulating
  • high purity

Target industries

Downloads

Technical details


  • product-technical-detail-collapse-item-0-lvl-1
    Mechanical properties Value Unit Condition Test Method
    Tensile strength at yield 19,400 psi 0.2 in/min ASTM D 638
    Modulus of elasticity
    (tensile test)
    760,000 psi (0.2 in/min) ASTM D 638
    Impact strength (Izod) 0.8 ftlbsin @ 73 °F ASTM D 256
    Compression strength 24,400 psi 10% Strain ASTM D 695
    Compression strength 2,860 psi 1% Strain ASTM D 695
    Compression modulus 445,000 psi ASTM D 695
    Elongation at break (tensile test) 15 % 0.2 in/min ASTM D 638
    Modulus of elasticity
    (flexural test)
    740,000 psi @ 73 °F ASTM D 790
    Flexural strength 31,000 psi @ 73 °F ASTM D 790
    Rockwell hardness 112 - R Scale ASTM D 785
  • product-technical-detail-collapse-item-1-lvl-1
    Thermal properties Value Unit Condition Test Method
    Melting temperature 729 F DIN EN ISO 11357
    Glass transition temperature 324 F DIN EN ISO 11357
    Deflection temperature 342 F @264 psi ISO-R 75 Method A
    Service temperature 500 F Long Term -
    Thermal expansion (CLTE) 2.72 *10^-5 in/in / degre ASTM E 831
    Service temperature 572 F short term -
  • product-technical-detail-collapse-item-2-lvl-1
    Electrical properties Value Unit Condition Test Method
    Volume resistivity >1015 O*cm DIN IEC 60093
    surface resistivity 1.0*1014 Ohm/square -
  • product-technical-detail-collapse-item-3-lvl-1
    Other properties Value Unit Condition Test Method
    Moisture absorption 0.05 % @ saturation, 50% R.H. ASTM D 570
    Moisture absorption 0.02 % @ 24 hrs., 73°F ASTM D 570
    Flammability (UL94) V0 - -

Stock program