Polyether Ether Ketone (PEEK) PEEK polymers are obtained by step-growth polymerization. PEEK is a semicrystalline thermoplastic with excellent mechanical and chemical resistance properties that are retained to high temperatures. PEEK is regarded as one of the highest performing engineering thermoplastics in the world. PEEK is used to fabricate items used in demanding applications in aerospace, automotive, oil and gas and medical industries.
Z-PEI 9085 (Ultem) features a strength to weight ratio comparable to aluminium 6061 and a better thermal shock resistance. It has been rigorously tested by NASA and ESA and is one of a handful of materials cleared for use on the International Space Station.