Ferritic stainless steels contain chromium and cannot be heat-treated. Carbon and other components can be added to convert them to Martensitic Stainless steel.

Martensitic Stainless Steels (for example, Types 410 and 13 Chrome) increase strength by heat treatment, with some adding nickel and molybdenum for improved corrosion resistance. There are also precipitation-hardened martensitic stainless steels available.

Austenitic stainless steels (for example, Types 304, 316) have a high nickel content, with some, such as Type A286, being precipitation-hardenable. These Corrosion Resistant Alloys are common in the oil and gas business.

Duplex stainless steels are Corrosion Resistant Alloys that combine Ferrite and Austenite microstructures to provide a chromium, nickel, and molybdenum balance. Ideal for pitting and crevice corrosion-prone areas.

Another type of Corrosion Resistant Alloys are Super Duplex Stainless Steels are heavily alloyed, with metals such as copper and tungsten added for corrosion resistance.