Corrosion of metals and alloys. Corrosion in artificial atmosphere. Accelerated corrosion test involving exposure under controlled conditions of humidity cycling and intermittent spraying of a salt solution
Corrosion of metals and alloys. Corrosion in artificial atmosphere. Accelerated corrosion test involving exposure under controlled conditions of humidity cycling and intermittent spraying of a salt solution
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Corrosion of metals and alloys. Corrosion in artificial atmosphere. Accelerated corrosion test involving exposure under controlled conditions of humidity cycling and intermittent spraying of a salt solution

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This International Standard specifies the test method, the reagents, and the procedure to be used in an accelerated atmospheric corrosion test constituting a 6 h exposure to a slightly acidified solution of 1 % NaCl twice weekly, followed by a condition of controlled humidity cycling between 95 % RH and 50 % RH at a constant temperature of 35 °C.

This International Standard does not specify the dimensions of the tests specimens, the exposure period to be used for a particular product, or the interpretation of the results. Such details are provided in the appropriate product specifications.

The accelerated laboratory corrosion test applies to

  • metals and their alloys,

  • metallic coatings (anodic or cathodic),

  • chemical conversion coatings, and

  • organic coatings on metallic materials.

NOTE 1    If testing low-alloy stainless steels, especially austenitic grades, according to this International Standard, there is a risk of receiving exaggerated pitting, not representative for most service environments.

NOTE 2    This International Standard is not suitable for testing of wax and oil based rust protection agents, due to the constantly elevated temperature condition of the test.