Corrosion resistant alloys are metals engineered to resist degradation by oxidation or other chemical reactions. The most common cra’s, used for mild to moderate corrosion resistance, are stainless steels. Stainless steels are iron-based alloys containing a minimum of 10.5% chromium, which is sufficient to prevent rust under typical room temperature atmospheric conditions. Stainless steels simply alloyed with Chromium, such as Type 430, are referred to as Ferritic Stainless Steels. This family of alloys can’t be strengthened by heat treatment, however, with the addition of carbon and other elements, they become Martensitic Stainless Steels.