A piece of the chemical element nickel (Ni). Nickel is resistant to corrosion and is used pre-eminently as an alloying metal in nickel steels and nickel cast irons.

A piece of the chemical element nickel (Ni). Nickel is resistant to corrosion and is used pre-eminently as an alloying metal in nickel steels and nickel cast irons.

A piece of the chemical element nickel (Ni). Nickel is resistant to corrosion and is used pre-eminently as an alloying metal in nickel steels and nickel cast irons.