IS 14191 : 1996 Corrosion of Metals and alloys - classification of corrosivity of atmosphere

1 Scope

1.1 This standard specifies key factors in the atmosphericcorrosion of metals and alloys, classifies Categories for time ofwetness and pollution by SO₂ and airborne salinityand defines corrosivity categories on the basis of corrosionclassification data.

1.2 The classification given in this standard can be useddirectly to evaluate the corrosivity of atmospheres for metals andalloys under known conditions of time of wetness and pollution bySO₂ and/or airborne chlorides within classifiedranges.

1.2.1 This standard does not characterize the corrosivity ofspecific service atmospheres, for example, the atmospheres ofchemical or metallurgical industries because the pollution and timeof wetness characterization of these environments cannot begeneralized.

1.2.2 The classified pollution and corrosivity categories can bedirectly used for technical and economical analysis of corrosiondamage and for rational choice of protection measures.

1.3 Annex A represents the technical content of this standard inform, easy to survey.

2 References

IS 3531 : 1983Glossary of terms relating to corrosion of metals

IS 14297 : 1995Corrosion of metals and alloys - Corrosivity ofatmosphere - Method of determination of corrosion rateof standard specimens for the evaluation of corrosivity

IS 14321 : 1995Corrosion of metals and alloys - Recommended values forthe corrosivity categories of atmosphere

IS 14322 : 1995Corrosion of metals and alloys - Corrosivity ofatmospheres - Methods of measurement of pollution