Monel
Monel is primarily composed of nickel (up to 67%) and copper, with some iron and other trace elements. Monel alloy 400 is binary alloy of the same proportions of nickel and copper as is found naturally in the nickel ore from the Sudbury (Ontario) mines.
Monel has a specific gravity of 8.82 and has an electrical conductivity of approximately 3.6% IACS.Compared to stainless steel, Monel is very difficult to machine as it work-hardens instantly with heat and does not harden into a constant matrix, it is also more expensive than steel.
Monel needs to be turned and worked at slow speeds and low feed rates. Monel is resistant to corrosion and acids, and some alloys can withstand a fire in pure oxygen. It is commonly used in applications with highly corrosive conditions. Small additions of aluminium and titanium form an alloy (K-500) with the same corrosion resistance but with much greater strength due to gamma prime formation on aging.
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