Delrin® is a trade name of a homopolymer. PEEK plastic is strong and rigid with superior creep resistance, and delivers where thermal, chemical, and combustion properties are critical. Additionally, PEEK plastic is fully recyclable. Its superior creep resistance makes acetal a good choice when dimensional stability is needed. PEEK material (chemically known as polyetheretherketone) is manufactured by Ensinger in standard stock shapes for machining. Stainless Steel Tumbling Titanium Tumbling Carbon Steel Tumbling Aluminum. It is rigid, strong and has a low coefficient of friction against metals, other acetals and plastics. It is roughly 10 times the price of PTFE and as a result has remained a niche polymer, used only in applications where it is absolutely necessary. Acetal is an easy-to-machine, general purpose engineering plastic that has excellent dimensional stability. The biggest disadvantage of PEEK remains the price. This makes it a preferred choice in high wear applications. In a nutshell, applications requiring strength and low levels of deformation would usually employ PEEK, whereas those requiring resistance to voltage or chemicals utilize PTFE. PTFE also rates highly in that it is self-lubricating. OEMs typically have to make a choice based on technical suitability and hence need to be better informed as to how these materials match up against each other.īelow is a short comparison on properties between these two polymers and can be used a guide to aid new product development. A proven performer, Greene Tweed’s Arlon 3000XT is a non-filled, cross-linked thermoplastic material that delivers the benefits of conventional PEEK and PEK polymers while providing extended mechanical, electrical, and creep performance at high temperatures above 300F (150C). However, the long time creep rupture strengths of the 20 pre-strained materials tested at 700C and 750C were lower than those of solution-treated materials. ![]() ![]() Although both PTFE and PEEK are well established within their respective fields, there are frequently questions around which would better suit a given application.
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