c/Rare earth alloys

Information
lexicalization	eng: Rare earth alloys
subclass of	(noun) 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" metal, alloy
has instance	e/Niobium-tin
has instance	e/Niobium-titanium