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Victrex® PAEK

Victrex® PAEK

Polyaryl ether ketones (PAEK) are semi-crystalline, high-performance polymers that are similar to most plastics but superior in temperature and media resistance.

PAEK contain ether and ketone groups in the polymer chain. The proportion of ketone in the ratio to the ether groups determines the melting and glass transition temperature of the different PAEK and thus influences in particular the mechanical load-bearing capacity under the influence of temperature. In principle, various combinations of ether and ketone groups and thus different melting and glass transition temperatures are possible. The best-known form, however, is PEEK. The continuous service temperature of all PAEK is at 260°C.

The PAEK show high strength and stiffness and are resistant to almost all organic and inorganic chemicals and are resistant to hydrolysis up to 260°. They are considered highly pure, hardly outgas in vacuum and are classified as physiologically harmless and therefore suitable for contact with food. They also meet the highest requirements for biocompatibility and can be used in medical and pharmaceutical applications. The PAEK are self-extinguishing and show a low smoke development in the event of fire. The electrical and dielectric properties are also excellent at high temperatures.

Main features

  • continuous operating temperature 250°C
  • high mechanical strength and stiffness
  • highly pure and physiologically harmless

Due to their properties, PAEKs are used for a wide variety of thermally stressed components in all conceivable applications. POLYTRON offers PAEK types only from original Victrex® raw materials.

In addition to the basic Victrex® PEEKTM grade, which is available in various modifications, there is a high-temperature grade Victrex® HT (PEK) and a special Victrex® ST (PEKEKK) grade which is mechanically particularly strong and even more temperature-resistant.

Overview of the different qualities

PAEK Types

Due to their properties, PAEKs are used for a wide variety of thermally stressed components in all conceivable applications. In additon to the basic type Victrex® PEEKTM which is available in various modifications, there are Victrex® HT (PEK) showing a high-temperature grade and Victrex® ST (PEKEKK) which is a mechanically particularly strong, and once again even more temperature-resistant. In detail, the following are types available:

Victrex® PEEK™
is the standard unfilled PEEK grade. The material has a unique combination of very good mechanical properties and excellent chemical and radiation resistance. Furthermore, it is resistant to hydrolysis and does not outgas in a vacuum. PEEK is classified as physiologically safe. >Data sheet

Victrex® PEEK™ GL30 (PEEK GF30)
is a 30% glass-fiber-reinforced modified type. It is characterized by higher stiffness and creep resistance compared to the unfilled PEEK and exhibits significantly better dimensional stability over a wide temperature range. >Data sheet

Victrex® PEEK™ CA30 (PEEK CF30)
is a 30% carbon fiber reinforced type. Compared to the glass fiber-reinforced PEEK its mechanical strength and creep resistance has been further improved. In addition, the carbon fibers increase thermal conductivity. >Data sheet

Victrex® PEEK™ FC30 (PEEK mod.)
is a tribologically modified grade with 10% each of graphite, carbon fibers and fluorocarbon. Due to its modification, the material shows a higher mechanical strength, a lower coefficients of friction and a lower tendency to wear compared to the unreinforced PEEK. >Data sheet

Victrex® HT (PEK)
is the standard unfilled PEK standard grade. Due to the balanced ratio of ether and ketone groups, it surpasses the well-known PEEK in its properties which is particular evident in the higher glass transition and higher melting temperature. Due to its higher glass transition temperature, the material can be be used where PEEK can no longer withstand thermal stresses .>Data sheet

Victrex® ST (PEKEKK)
is the unfilled PEKEKK standard grade. It surpasses the known and established PEAK in its properties, which is particularly evident in the significantly higher glass transition temperature of 164°C and the higher melting temperature of 389°C . Due to its higher glass transition temperature, the material there can be used where PEK or PEEK can no longer withstand thermal stresses. >Data sheet

Components made of Victrex® PEEKTM can also be supplied with a statement of suitability and used in contact with foodstuffs in accordance with Regulation (EC) No. 1935/2004.



For further information you can
contact our application engineers here!

Overview of the available semi-finished product dimensions


Rods Diameter

Flat Bars ⁢Plate Thickness

Tubes Outer Diameter

Victrex® PEEK™

5 - 200 mm

5 - 100 mm

40 - 200 mm

Victrex® PEEK™GL30

8 - 100 mm

10 - 50 mm

on request

Victrex® PEEK™CA30

10 - 50 mm

20 mm

on request

Victrex® PEEK™FC30

10 -  100 mm

10 - 50 mm

50 - 150 mm

Ketron® HPV

8 - 100 mm

10 - 40 mm

30 - 300 mm

Ketron® TX

25 - 80 mm

10 - 25 mm

on request

Victrex® HT (PEK)

20 - 40 mm

20 mm

on request

Victrex® ST (PEKEKK)

20 - 40 mm

20 mm

on request

Stress-strain diagrams of different PAEKS

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