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EFC Working Party 25: Atmospheric Corrosion


Welcome to the website of the EFC WP25 on Atmospheric Corrosion.

Current activities

WP25 Atmospheric Corrosion is preparing a catalogue of European field exposure sites. It will include climatic and corrosivity data of well established and managed sites including contacts to site managers. The catalogue will help industry and researchers finding sites with required conditions for outdoor corrosion tests. Any help in collecting the information is welcome.

Business Meeting

Next Business Meeting at the upcoming virtual EUROCORR congress


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Mission and Objectives



Atmospheric corrosion is controlled by complex electrochemical and physical processes taking place in a thin film on a metal surface with dynamically changing composition and properties. A number of mainly in situ analytical techniques introduced in past decades helped to improve our understanding of these processes dramatically. Still, the complexity of real systems exposed under varying conditions in view of both external factors such as the relative humidity, temperature and concentration of air pollutants and internal factors such as composition and physicochemical properties of precipitated corrosion products and interplay between metal micro elements make any transfer of the scientific knowledge into practical means of corrosion prevention challenging. Our principal goal is to foster collaboration and exchange between academia and industry in order to help in development of solutions reducing costs of corrosion protection of structures and objects exposed to atmosphere. This can be done only by bringing together academic research groups with deep fundamental knowledge and modelling capabilities and industry end-users with their practical needs in terms of efficient anticorrosion measures applicable in atmospheric exposure conditions, user-friendly modelling tools and long-term predictive models.


WP25 Atmospheric corrosion will provide a platform for exchange of knowledge, information and ideas between scientists, researchers and industry on the following fundamental and practical topics:

  • Improvement of the understanding into corrosion processes in thin electrolytes formed under atmospheric conditions.
  • Development of better predictive models, both statistical and mechanistic.
  • Best practices of field and laboratory testing.
  • Development of corrosion monitoring techniques applicable in atmosphere.
  • Corrosion in new environments, e.g. severe marine industrial atmospheres and micro climates.
  • Protection of novel materials including weathering, stainless and coated carbon steels and aluminium and magnesium alloys.
  • Practical experience in corrosion protection of structures and objects exposed to outdoor and indoor atmospheres.
  • Standardization activities.

Previous Activities



WP25 Atmospheric corrosion has been established as a TF by the Science and Technology Advisory Committee (STAC) of EFC on September 3, 2017. The mission and programme of the TF were discussed and approved in the first meeting on September 4, 2017. Since 29th September 2020 the TF has been transformed into Working Party 25 after agreement of the General Assembly.