Nirosta 4000 is a common ferritic stainless steel. Like all 13% Cr steels, the corrosion resistance lies at the lower durability limit for stainless steels. The alloy therefore offers resistance only to dilute acids, water, and steam. The alloy possesses a higher resistance to corrosion when highly polished or precision ground. It is used principally as apparatus for the mineral oil industry. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on forming, heat treating, and joining. Filing Code: SS-848. Producer or source: ThyssenKrupp Nirosta GmbH.