(1) A very important engineering use for this metal is in alloy with steel. Its addition to mild steel gives a product of great elastic and tensile strength and fair ductility. Its presence in steel lessens corrosion.

(2) Another alloy of nickel of importance is monel metal.

(3) The use of nickel for plating metal articles is well known.

(4) In commercial alloys, principally German silver, nickel is extensively used; also an alloyed nickel is used for small coins.