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Polyetheretherketone (PEEK)
usd/kg
Polyetheretherketone (PEEK) offers high-temperature resistance, wear resistance, corrosion resistance, and self-lubricating properties. It also has superior insulation and chemical resistance compared to metal alloys. With a density about half that of aluminium alloy, PEEK enables lightweight construction while maintaining high strength and rigidity.
PEEK is around 30% crystalline and usually sits alongside materials such as polyoxymethylene (POM), acetal, and Polyamide (PA66), nylon, as higher strength semi-crystalline thermoplastic polymers. PEEK can be used in place of POM or
PA66 where higher strength, stiffness or temperature resistance is required. The strength and stiffness of PEEK are
being used in applications where the resistance required would typically require the properties of metals.
Only four companies worldwide – Victrex (UK), Solvay (Belgium), Evonik (Germany), and China’s Zhongyan Polymer Materials – produce PEEK at large scale. Trade names include Victrex (Victrex), Ketaspire (Syensqo, formerly Solvay), Vestakeep (Evonik), Tecapeek (Ensinger), Ketron (Mitsubishi), Sustapeek (Röchling) and Zeniva (Solvay).
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Sustainability concerns
Non-renewable ingredients
Raw material generates polluting by-products
Low circularity potential
Microplastics
Polyetheretherketone (PEEK) retains its mechanical properties at high temperatures (260 degC) and under continuous load, making it suitable for demanding applications in aerospace, automotive, medical, and electronics industries. It has high resistance to creep, unlike some other high performance polymers like polytetrafluoroethylene (PTFE). It maintains integrity in aggressive chemical environments, hot water, and steam. And it has low moisture absorption and performs reliably in humid or submerged conditions
It is compliant with food and medical standards, and is used in applications that require very high chemical resistance and the ability to endure multiple cycles of steam, gamma or ethylene oxide sterilisation.
It has proven itself in very demanding applications. For example, PEEK wire bundle and tubing clamps for the Boeing 737/787 cut the total weight by 20% compared to the incumbent metal solution.
It is naturally light brown (tan) in colour and is also available in black.
