Ferritic stainless steels

These grades are characterized by a very low content of nickel (less than 1%). Their low carbon content prevents hardening by heat treatment and induce a better corrosion resistance than martensitic stainless steels.

Martensitic stainless steels

These grades present similar chemical composition than ferritic grades. Their higher carbon and lower chromium concentration permit hardening by heat treatment

Precipitation hardening stainless steels

The addition of aluminum, copper or aluminium in these chromium-nickel grades allow them to be hardened by a solution and aging heat treatment. These grades present high strength after precipitation hardening heat treatment.