NEN EN 12500 : 2000

Introduction
1 Scope
2 Normative references
3 Terms and definitions
      3.1 Corrosivity
      3.2 Corrosion likelihood
      3.3 Type of atmospheric environment
      3.4 Category of location
      3.5 Time of wetness
4 Classification of corrosivity of atmospheric
      environments
5 Determination of corrosivity categories
6 Estimation of corrosivity categories
      6.1 General
      6.2 Climatic influences
      6.3 Types of atmospheric environment
      6.4 Categories of location
             6.4.1 General
             6.4.2 Outdoor atmosphere
             6.4.3 Indoor atmosphere
Annex A (normative) Description of standard specimens and
                    exposure conditions for determination
                    of corrosivity categories
Annex B (normative) Chemical cleaning procedures for removal
                    of corrosion products (in accordance
                    with ISO 9226)
Annex C (informative) Correspondence between the mass loss
                      per unit surface area and the thickness
                      loss after 1 year exposure for the
                      corrosivity categories
Annex D (informative) Calculated time of wetness and selected
                      climatological characteristics of the
                      macroclimatic zones of the earth
Annex E (informative) Description of typical atmospheric
                      environments related to the estimation
                      of corrosivity categories
Bibliography