While using the old standards for the so-called stainless steels included alloys with the addition of chromium (ferritic), and the so-called acidic chromium-nickel steels (austenitic). The currently official standard is EN 10088, where stainless steel covers a much wider range than before. Therefore, in order to avoid misunderstandings when discussing needs, it is recommended to specify the material application or specific steel grade according to EN 10088 (1.4016, 1.4301, 1.4404 etc.).