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TECAPEEK ST

Designed to perform in industries and applications requiring a combination of high temperature, mechanical performance and dimensional stability.

Tecapeek ST

The ENSINGER portfolio of semi-finished products made of high performance plastics is joined by a new member of the polyaryletherketone family: TECAPEEK ST.

This innovative product based on Victrex® ST™, is designed to perform in industries and applications requiring a combination of high temperature, mechanical performance and dimensional stability. Customer demands for high performance plastics in high temperature ranges are growing. At the same time, machinability, purity and high chemical resistance are very important key properties.

TECAPEEK ST has been developed for demanding temperature environments such as the automotive, oil and gas or electronics industry. Parts and components made of TECAPEEK ST have the potential to perform better, last longer and help customers realize long-term cost savings where other unfilled polymers reach their limits.

Compared to other unfilled polymers (like TECAPEEK natural or TECAPEEK HT), TECAPEEK ST offers an improved mechanical performance, especially in the temperature range from 150 °C / 302 °F to 200 °C / 392 °F.

The glass transition temperature of TECAPEEK ST is at 162 °C / 324 °F (compared to TECAPEEK natural at 143 °C / 289 °F), the heat distortion temperature is in creased from 152 °C / 306 °F (TECAPEEK natural) to 172 °C / 342 °F (TECAPEEK ST).

Preferred Fields

Oil and gas industry, electronics, chemical industry, automotive

Applications

Turbocharger impellors, rings, gears, seals, sockets, ...

Properties

  • excellent mechanical performance at high temperatures
  • high heat distortion temperature
  • excellent chemical resistance
  • low moisture absorption
  • electrical insulation
  • easy to machine
  • good dimensional stability

Property values

TECAPEEK ST
Short description PEKEKK
Long term service temperature OC >260(1)
Density
(ASTM D 792, DIN EN ISO 1183)		 ρg
/cm3		 1,30
Tensile strength at yield
(ASTM D 638, DIN EN ISO 527)		 σS
MPa		 130(2)
Elongation at break (ASTM D 638, DIN EN ISO 527, ASTM D 1708 (a)) εR % 11(2)
Modulus of elasticity after tensile test (ASTM D 638, DIN EN ISO 527) EZ
MPa		 4600(2)
Notched impact resistance (DIN EN ISO 179 1eA (Charpy)) an kJ/m2 7,4(2)
Melting point (DIN 53 765) Tm °C / °F 387 / 729
Glass transition temperature (DIN 53 765) Tg OC / °F 162 / 324
Heat distortion temperature DIN EN ISO 75 method A HDT/A OC / °F 172 / 342
Coefficient of thermal expansion (ISO 11359) α
10-5 1/K		 172 / 342
Resistance to hot water and washing soda - +

(1) expected values
(2) testing of semi-finished products

The information corresponds with current knowledge and indicates our products and possible applications. We cannot give you a legally binding guarantee of the physical properties or the suitability for a specific application. Existing commercial patents are to be taken in account.

Dimensions

Plates

Tecapeek ST Tolerance to DIN (mm) TECAPEEK ST
DIN-Abbreviation PEKEKK
Density (g/cm³) 1,30
Diameter
(mm)		 kg/m
20 x 500 + 0,3 + 1,5 14,27

Rods

Tecapeek ST Tolerance to DIN (mm) TECAPEEK ST
DIN-Abbreviation PEKEKK
Density (g/cm³) 1,30
Diameter
Ø (mm)		 kg/m
20 + 0,2 + 1,1 0,444
40 + 0,2 + 1,5 1,74

Stock lengths 3000 mm, other delivery lengths possible.

Tecapeek ST

Comparison of flexural modulus (DMTA) over temperature of TECAPEEK ST, TECAPEEK HT and TECAPEEK natural, tested on injection moulded specimen.