Aluminized Type 1 409 Stainless Steel is suitable for a variety of roofing applications, architectural or wall panel systems. It provides an outstanding combination of corrosion resistance, wind and fire ratings, formability and cost efficiency that makes them ideal materials in industrial and marine environments. The hot dip Aluminized Type 1 coating provides cathodic protection to the base stainless steel to improve the pitting corrosion resistance and thereby extend the service life of the stainless steel. In turn, chromium diffusion from the substrate metal into the coating enhances the general corrosion resistance of the aluminized coating. The result is greatly enhanced service life over that possible with either material alone. In addition, the excellent strength-to-weight ratios of stainless steels result in superior design flexibility that reduces material and labor costs.