Monel is a group of nickel alloys, primarily composed of nickel (up to 67%) and copper, with small amounts of iron, manganese, carbon, and silicon. Stronger than pure nickel, Monel alloys are resistant to corrosion by many agents, including rapidly flowing seawater. They can be fabricated readily by hot- and cold-working, machining, and welding.
This material is noted for its toughness over a considerable range of temperatures, and has excellent resistance to many corrosive environments. Monel 400 can be hardened only by cold-working. It is useful at temperatures up to 1050° F, and has very good mechanical properties at temperatures below zero. Melting point is 2370-2460⁰ F.
Resists corrosion and oxidation to 2150⁰ F. Provides springs with high resistance to corrosion and heat up to 750⁰ F. Tough and ductile down to -310⁰ F is nonmagnetic, easily fabricated and welded. Used for structural parts, cathode ray tube spiders, thyratron grids, sheathing, tube supports, spark plug electrodes.
Age hardenable, nonmagnetic, corrosion and oxidation resistant (high creep-rupture strength to 1300⁰ F). Heavy cold working develops tensile strength of 290,000 psi. Stays tough and ductile to -423⁰ F. Resists chloride-ion stress-corrosion cracking. For springs operating to 1200⁰ F and tube structural parts.
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