common trade names:

Invar 36®, Nilo 36®, Pernifer® 36

UNS K93600 also referred to by their trade names Invar 36® and Nilo 36® are nickel-iron alloys. The alloy retains good strength and toughness at freezing temperatures. Alloy 36 is used for measuring devices, laser components, thermostat rods, and transporting liquefied gases.

Available forms are seamless pipe, welded pipe, seamless tube, welded tube, bar, wire, sheet, plate, forgings, pipe fittings and flanges.