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Wikipedia definition
1. Brittleness​A material is brittle if, when subjected to stress, it breaks without significant deformation. Brittle materials absorb relatively little energy prior to fracture, even those of high strength. Breaking is often accompanied by a snapping sound. Brittle materials include most ceramics and glasses (which do not deform plastically) and some polymers, such as PMMA and polystyrene. Many steels become brittle at low temperatures, depending on their composition and processing.
Read “Brittleness” on English Wikipedia
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Read “Brittleness” on DBpedia

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