DIN EN ISO 11130:2010-12

Corrosion of metals is influenced by factors which can vary significantly with environmental conditions. Therefore, corrosion resistance determined for metals during alternate immersion testing as described in this International Standard can vary greatly with the test solution selected, the temperature during immersion and the temperature, humidity during the drying periods of the test, and so on. Consequently, the result of an alternate immersion corrosion test is not taken as an indication of the corrosion resistance of the metal tested in all the different service environments where the metal can be used. Nevertheless, results obtained by the method described in this standard can indicate the relative corrosion resistance of different metals under in-service conditions, in particular when the service environment is similar to the test solution selected. The method can also be used to test metals under an applied tensile stress. This International Standard specifies a method for assessing the corrosion resistance of metals by an alternate immersion test in salt solution, with or without applied stress. The test is particularly suitable for quality control during the manufacture of metals (including aluminium alloys and ferrous materials), and also for assessment purposes during alloy development. Depending upon the chemical composition of the test solution, the test can be used to simulate the corrosive effects of seawater, especially in the splash zone of de-icing fluids, an acid salt environment, and so on. The term "metal" as used in this International Standard includes metallic materials with or without corrosion protection. The alternate immersion test applies to: metals and their alloys, certain metallic coatings (anodic and cathodic with respect to the substrate), certain conversion coatings, certain anodic oxide coatings, and organic coatings on metals. This International Standard is not applicable to stainless steel. This document (FprEN ISO 11130:2007) has been prepared by Technical Committee ISO/TC 156 "Corrosion of metals and alloys", the secretariat of which is held by SAC (People's Republic of China), and by CEN/TC 262 "Metallic and other inorganic coatings", the secretariat of which is held by BSI (United Kingdom) under ISO-lead mode of collaboration as defined in the Vienna Agreement. The responsible German Committee is Working Committee NA 062-01-71 AA "Korrosion und Korrosionsschutz" ("Corrosion and corrosion protection") of the Materials Testing Standards Committee (NMP). With respect to DIN EN ISO 11130:1999-11, the following changes have been made: a) Another example has been added in Annex B.