Overview

The purpose of this International Standard is to define a method of assessing the corrosion resistance of metals by an accelerated outdoor corrosion test. In this International Standard, the term "metal" includes metallic materials with or without corrosion protection. The accelerated outdoor corrosion test applies to: - organic coatings on metals; - metallic coatings (anodic and cathodic); - chemical conversion coatings; - metals and their alloys. The method is especially suitable for comparative testing in the optimization of surface treatment systems. This document (EN ISO 11474:2014) has been prepared by ISO/TC 156 "Corrosion of metals and alloys" (secretariat: SAC, Peoples Republic of China) and has been taken over by Technical Committee CEN/TC 262 "Metallic and other inorganic coatings" (secretariat: BSI, United Kingdom) in accordance with the Vienna Agreement. The responsible German body involved in its preparation is Working Committee NA 062-01-77 AA "Korrosionsprüfverfahren" ("Corrosion testing") at DIN Standards Committee Materials Testing (NMP). The Working Committee brings attention to the fact that the term "Scab test" used in the title can also be used in the more general sense of testing underfilm corrosion, and not only where stone shots have caused damage to car surfaces, as is explained in the Introduction to this standard. This form of corrosion does not occur during the salt spray test, for example. Furthermore, attention is brought to the fact that, normally, the procedure described in Clause 6 is carried out for at least 12 months to take account of the different effects occurring throughout the year. Not only does the testing period have an influence on the result, but so does the exposure period.

Document: references other documents

Responsible national committee

NA 062-01-77 AA - Corrosion testing  

Responsible european committee

CEN/TC 262 - Metallic and other inorganic coatings, including for corrosion protection and corrosion testing of metals and alloys  

Responsible international committee

ISO/TC 156/WG 7 - Accelerated corrosion tests