Properties and Mechanical Specifications of PEEK Carbon-filled PEEK also has more thermal conductivity, increasing a part’s lifespan and performance. Carbon-filled PEEK has increased compressive strength, which dramatically lowers its expansion rate and supports better wear-resistance and load-carrying capabilities. One disadvantage of glass-filled PEEK is its tendency to wear down mating parts.
Glass-filled PEEK offers more stiffness than unfilled PEEK and is often used in the oil and gas industries to ward off poor reactions to steam, chemicals, and high temperatures. Pure, unfilled PEEK is quite durable on its own, but PEEK is also often reinforced with carbon or glass fibers to become less brittle. Across manufacturing methods, PEEK offers repeatability and accuracy component-to-component and can produce parts with tight tolerances. PEEK can also be manufactured via CNC machining. PEEK can be processed using injection molding or additive manufacturing, where its high melting point permits faster feeds and speeds. Since PEEK is physically light yet highly resistant to corrosive substances, it is well-suited for a variety of manufacturing methods. Along with being tough, PEEK is lightweight and easy to manufacture. PEEK is also creep-resistant, meaning it will retain its shape in harsh environments and high temperatures, and when placed under mechanical stress. This material boasts incredible electrical resistance along with heat resistance, wear resistance, and fatigue resistance. PEEK is a polymer created by step-growth polymerization, in which the polymer chain doubles with each polymerization step. To make the most out of this versatile and adaptable material, engineers and product teams should familiarize themselves with the properties, characteristics, and limitations of PEEK. In fact, PEEK is one of the most commonly manufactured polyaryletherketones (or PAEKs) for large-scale production runs. Over the past 50 years, PEEK has developed into one of the most widely used materials for high-performance applications.
PEEK was first conceived in 1978 - relatively recently by manufacturing standards - as a high-temperature resistant material for cable insulation. Originally published on on June 21, 2021
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