Definitation and classification of nickel base alloys and iron-nickel base alloys

Nickel-based corrosion-resistant alloy – based on nickel (w (Ni) >=50%) and containing elements (Cr, Mo, Cu, W, Si, Al, Ti) that impart corrosion resistance to the alloy and resistant to corrosion A series of alloys whose properties are mainly used for performance, called nickel base corrosion resistant alloys.
The iron-nickel-based corrosion-resistant alloy is based on (w (Ni +Fe) >=50%), wherein w(Ni) is between 30% and 50% and contains alloying elements which can impart various corrosion resistance properties. A series of alloys, called iron-nickel-based corrosion-resistant alloys.
Pure nickel, an unalloyed pure nickel, differs only between the grades in terms of carbon content.

Classification of nickel-based and iron-nickel based corrosion-resistant alloys
The core properties of nickel-based and iron-nickel-based corrosion-resistant alloys are their corrosion resistance. The basis for this performance is the chemical composition of the alloy. In order to cope with the complex and volatile corrosion environment, a large number of corrosion-resistant alloy series have been formed. In order to facilitate production, use and management, these alloys are classified at home and abroad. The classification principle is based on the plastics of the alloys contained in the alloy, without the human stabilizing elements and precipitation hardening elements.
Nickel-based corrosion-resistant alloys can be divided into five series: Ni-Cu corrosion-resistant alloys; Ni-Cr-Fe corrosion-resistant alloys; Ni-Mo corrosion-resistant alloys; Ni-Cri-Mo corrosion-resistant alloys; Ni-Cr-Mo- Cu corrosion resistant alloy.
Iron-nickel-based corrosion-resistant alloy can be divided into four series: Ni-Fe-Cr corrosion-resistant alloy; Ni-Fe-Cr-Mo corrosion-resistant alloy; Ni-Fe-Cr-Mo-Cu corrosion-resistant alloy; Ni-Fe- Cr-Mo-Cu-N corrosion resistant alloy.