Platinite - Facts from the Encyclopedia - Yahoo! Education Skip to search. New User? Register Sign InHelp Get new Yahoo Mail apps Mail My Yahoo Yahoo Yahoo Education Search Search Web HOME CAREERS SCHOOLS ARTICLES REFERENCE Yahoo! Education > Reference > Encyclopedia > platinite Encyclopedia: platinite Reference Dictionary Encyclopedia Thesaurus World Factbook Search Encyclopedia: platinite alloy that is 46% nickel and 54% iron. It is used in the manufacture of electric lightbulbs because its coefficient of expansion, i.e., the rate at which its volume increases with temperature, is the same as that of glass. Home| Career Center| School Match| Articles| Reference| Help Questions or Comments - Privacy - About Our Ads - Terms.