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TECAPEEK ST ™ Super Temperature
PEKEKK (PolyEtherKetone-EtherKetoneKetone) Specifications

904 West 6th Street, Shiner, Texas 77984 USA
Phone: 1-361-594-2941     Fax: 1-361-594-2349     E-Mail:


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click to resize photo The innovative TECAPEEK ® ST is a new high performance material developed to perform in the most demanding environments -- specifically in applications requiring a combination of high temperature, mechanical performance and dimensional stability. TECAPEEK ST opens up new application opportunities for customers who work at temperatures over 300°C, such as in the electronics and energy industries.

With a glass transition temperature of 324°F (162°C) and a melting temperature of 729°F (387°C), TECAPEEK ST ™ delivers extended high temperature performance while offering all the key characteristics of natural PEEK ™ PolyEtherEther-Ketone polymer, including toughness, strength, and chemical resistance.

Across a wide range of demanding industrial, automotive and aerospace applications, TECAPEEK ST ™ polymer offers manufacturers a premium material which is a more cost-effective, lightweight alternative to metals. Examples of appropriate applications for TECAPEEK ST include gears, friction bearings, wear strips, ball valve seals, bushings, pump housings, metering pistons, wafer supports, light mountings and plug parts. It's also a potential metal replacement solution for applications such as seals, disk drive carriers, connectors, turbo charger impellors, and test sockets.

TECAPEEK ST ™ is available sheet/plate and rod forms in black color.

•  improved mechanical performance in the 150°C to 200°C temperature range
  -  excellent chemical resistance
  -  good machinability
  -  long-term creep and fatigue resistance over a wide temperature range
  -  high heat deflection temperature
•  low moisture absorption
•  good dimensional stability
( see also Standard TECAPEEK grades TECAPEEK HT, and other TECAPEEK Family products )

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ASTM or UL test Property TECAPEEK ST ™
D792 Density (lb/in³)
D570 Water Absorption, 24hr / 96hr (%) 0.02 / 0.03
D638 Tensile Strength at Break (psi) 19,400
D638 Tensile Modulus (psi) 667,000
D638 Tensile Elongation at Break (%) 13
D790 Flexural Strength (psi) 28,000
D790 Flexural Modulus (psi) 667,000
D695 Compressive Strength (psi) 7,000
D695 Compressive Modulus (psi) 500,000
D785 Hardness, Rockwell -
D256 IZOD Impact Notched (ft-lb/in) 4.3
D696 Coefficient of Linear Thermal Expansion
(x 10-5 in./in./°F)
D648 Heat Deflection Temp (°F / °C)
at 264 psi

342 / 172
D3418 Glass Transition Temp (°F / °C) 329 / 165
D3418 Melting Temp (°F / °C) 723 / 384
- Max Operating Temp (°F / °C) 500 / 260
C177 Thermal Conductivity
(x 10-4 cal/cm-sec-°C)

UL94 Flammability Rating V-0
D149 Dielectric Strength (V/mil) short time, 1/8" thick -
D150 Dielectric Constant at 1 MHz -
D150 Dissipation Factor at 1 MHz -
D257 Surface Resistivity (ohms per square) at 50% RH 109
D257 Volume Resistivity (ohm-cm) at 50% RH 109

NOTE: The information contained herein are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers' complete material property datasheets.
All values at 73°F (23°C) unless otherwise noted.
PEEK ST is a trademark of Victrex USA, Inc.
TECAPEEK is a registered trademark of Ensinger Industries, Inc.

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Boedeker Plastics, Inc.
904 West 6th Street, Shiner, Texas 77984 USA
USA TOLLFREE : 1-800-444-3485
Phone: 1-361-594-2941     Fax: 1-361-594-2349     E-Mail:

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