bn:00047321n
Noun Concept
Categories: Ferrous alloys, Surveying instruments, Nickel alloys, Zero thermal expansion materials
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Invar  Invar steel
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An alloy of iron and nickel having a low coefficient of thermal expansion; used in tuning forks and measuring tapes and other instruments WordNet 3.0
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Invar, also known generically as FeNi36, is a nickeliron alloy notable for its uniquely low coefficient of thermal expansion. Wikipedia
Alloy of nickel and iron with low coefficient of thermal expansion Wikidata
An alloy of iron containing 35.5% nickel, and having a very low coefficient of expansion. Wiktionary
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