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Types Of Corrosion

There are many types of corrosion that affect metal claddings but they can be divided into two main types:

  • atmospheric for a metal in isolation
  • electrochemical or galvanic, where the metal reacts with another metal or material

The various manifestations of corrosion within these two types are categorised in a different way, cannot be clearly defined and almost always overlap . Frequently the different types of corrosion typical of different metals and alloys do not develop separately, but are interdependent .

The nature of the interaction between various metals and electrolytes is influenced by the many permutations of the environment, the degree of pollution and the pH of the electrolyte.

It is the responsibility of both the designer and the Roofing Contractor to ensure that they do not cause corrosion by incorrect use of materials.

The major factors that affect metal corrosion are:
  • t he metal ,
  • t he atmosphere ,
  • t he rain , and
  • p ollutants
Clause: 
018_009_001_000_000_000_000_000_000
Clause Number: 
18.9.1
/cop/trash/corrosion#types-corrosion
Draft Clause: 
018_009_001_000_000_000_000_000_000