#nickel-base_alloy__nickel_alloy  an alloy whose main constituent is nickel
  supertype:  #alloy__metal  a mixture containing two or more metallic elements or metallic and nonmetallic elements usually fused together or dissolving into each other when molten; "brass is an alloy of zinc and copper"
  subtype:  #Monel_metal__Monell_metal  an alloy of nickel and copper and other metals (such as iron and/or manganese and/or aluminum)
  subtype:  #Nichrome  (trademark) a nickel-chromium alloy with high electrical resistance and an ability to withstand high temperatures; used for resistance heating elements
  subtype:  #Permalloy  an 80/20 alloy of nickel and iron; easily magnetized and demagnetized

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