Polyetheretherketone (PEEK)

Polyetheretherketone - Semi-Crystalline

Polyetheretherketone is a semi-crystalline thermoplastic with excellent sliding properties, very good mechanical properties, even under thermal load and has excellent resistance to chemicals. The high continuous working temperature rounds out the profile of this high-performance plastic and makes it a virtually universally useable design material for highly stressed parts. The polyetheretherketone semi-finished products that we offer – from which we also manufacture finished parts – are produced in extrusion or press processes.

Main properties

High continuous working temperature (+ 250 °C in air)
High mechanical strength
High rigidity
High creep resistance, also at high temperatures
Good sliding properties
High wear resistance
High dimensional stability
Excellent chemical resistance
Hydrolysis resistant
Good electrical insulator
Radiation resistant
Physiologically safe
Fire resistant (UL 94 V 0)

Sliding properties

PEEK combines ideal sliding properties with high mechanical strength and heat stability as well as superb chemical stability. It is therefore particularly suited to sliding functions. For construction parts particularly subject to high friction loads and wear, there is a version modified with carbon fibre, PTFE and graphite available, which gives highest resistance to wear, low friction values and high pv limit values.

Resistance to weathering

PEEK is resistant to X rays, β-rays and γ-rays. Hence PEEK is ideal for use in the pharmaceutical and nuclear industries. PEEK is not resistant to UV rays in combination with atmospheric oxygen.

Chemical resistance

PEEK is resistant to non-oxidising acids, concentrated alkaline solutions, salt solutions, cleaning agents and paraffin oils. It is not resistant to oxidising agents such as concentrated sulphuric acid, nitric acid or hydrogen fluoride.

Behaviour in fire

PEEK is rated fire resistant in the highest category. When the source of ignition is removed PEEK is self-extinguishing. The oxygen index (the oxygen concentration required for combustion) is 35 %.

Areas of use

Chemical and petrochemical industries
Pharmaceutical industry
Food industry
Nuclear industry
Aerospace industry
Defence technology
Oil Exploration & Refineries

Applications

Gears
Friction bearings
Spools
Fittings (e.g. housings for hot water meters)
Valves
Piston rings
Parts for car engines (e.g. bearing cages)

Machining

In addition to its good welding and bonding properties PEEK can be easily machined. The semi-finished products can be drilled, milled, sawed, planed and turned on a lathe. It is also possible to cut a thread into the material or insert a threaded element. Generally no cooling or lubricating emulsion is necessary.

Send Enquiry

Mr. Girish Dhawan (Proprietor)
No. 170, Gali Bandook Wali, Ajmeri Gate
New Delhi, Delhi - 110 006, India
Telephone:+(91)-(11)-23215389/ 32972567

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