The corrosion of metals can produce a great variety of corrosion effects (forms of corrosion). This document specifies the corrosion characteristics suitable for calculating the corrosion rate in case of almost uniform surface removal. Corrosion characteristics under non uniform and localized corrosion without mechanical load are specified in DIN 50905-3. Besides establishing the values of the measurands and calculating corrosion characteristics, it may in some cases be of significance to determine other changes in the properties of the material, see DIN 50905-1. Further standards to be observed are listed in DIN 50905-1.