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An ABS 3D bell manufactured with a 3D printer
Engineering plastics[1] are a group of plastic materials that have better mechanical or thermal properties than the more widely used commodity plastics (such as polystyrene, polyvinyl chloride, polypropylene and polyethylene).
Engineering plastics are more expensive than standard plastics, therefore they are produced in lower quantities and tend to be used for smaller objects or low-volume applications (such as mechanical parts), rather than for bulk and high-volume ends (like containers and packaging). Engineering plastics have a higher heat resistance than standard plastics and are continuously usable at temperatures up to about 150 °C (300 °F).
The term usually refers to thermoplastic materials rather than thermosetting ones. Examples of engineering plastics include polyamides (PA, nylons), used for skis and ski boots; polycarbonates (PC), used in motorcycle helmets and optical discs; and poly(methyl methacrylate) (PMMA, major brand names acrylic glass and plexiglass), used e.g. for taillights and protective shields. The currently most-consumed engineering plastic is acrylonitrile butadiene styrene (ABS), used for e.g. car bumpers, dashboard trim and Lego bricks.
Engineering plastics have gradually replaced traditional engineering materials such as metal, glass or ceramics in many applications. Besides equalling or surpassing them in strength, weight, and other properties, engineering plastics are much easier to manufacture, especially in complicated shapes. Across all different product types, more than 22 million tonnes of engineering plastics were consumed worldwide in 2020.[2]
^IAPD Education Committee. "Amorphous and Semi-Crystalline Engineering Thermoplastics, Module 4". Basic Plastics Education tutorials. International Association of Plastics Distributors. Archived from the original on 2 March 2012. Retrieved 13 June 2012.
^"Ceresana Market Study 'Engineering Plastics'". Retrieved 2021-11-24.
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