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Matter Index Nickel Alloy Notes
The name "Nickel" originated in Germany. The copper ores being mined seemed to
be contaminated and could not be reduced into workable copper. They attributed
this to the power of "Old Nick". The contaminated ores came to be called Kupfer-nickel which
can be translated into devils copper.
Commercially pure nickel is actually about 99,5% Ni + Cobalt.
This metal has good mechanical properties and excellent resistance to many corrosive
environments. The alloy retains much of its strength at elevated temperatures and is tough
and ductile at low temperature. The alloy contains some carbon (up to 0,1%). The lower the
carbon content the lower the risk of work hardening and the higher the ductility.
Nickel and copper are soluble in each other in all proportions.
The most important nickel-copper alloys are those containing about 67% Ni
and 33% Cu. These are called Monels.
Chromium is an important alloying element for many corrosion-resistant and high-temperature resistant nickel based alloys. It has a high solid solubility at approximately 30% Cr, at room temperature, in nickel. Inconel 600 is a standard engineering alloy for use in severely corrosive environments at elevated temperatures. It is a Ni-Cr-Fe alloy containing 15,5% Cr, and 8% Fe. This alloy is not heat treatable bu can be stengthened by cold working.
Nickel can also be a base for super-alloys with very high strength-high temperature characteristics.
Links Providing information on Nickel Alloys