... of 50% Nickel,balance Iron,used in a wide variety of electronic applications. Note: Alloy 52 (aka Pernifer 50, NILO 50, Glass ... % Nickel, balance Iron, used in a wide variety of electronic applications, especially for glass seals. Alloy 52 is a nickel iron alloy ... and industrial lamps, and specialty hermetic devices. Available Forms: Alloy 52 is available in Strip, Sheet, Plate and Wire.