Monel
Rust less (stainless) metal alloys, primarily composed of
nickel (up to 67%) and copper, with some iron and other trace
elements. It 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
aluminum and titanium form an alloy with the same corrosion
resistance, but with very high strength.
Its corrosion resistant characteristic makes it ideal for
marine applications such as piping systems, pump impellers and
strainer baskets. Some alloys are completely non-magnetic and are
used for anchor cable aboard minesweepers, housing magnetic field
measurement equipment, and have applications in the oil drilling
industry. Monel is typically much more expensive than stainless
steel.
Monel is very hard to machine as it work hardens instantly with
heat and does not harden into a constant matrix. It needs to be
turned and worked at slow speeds and low feed rates.