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Question: 1 / 400

Which type of corrosion is indicated by the blistering of surface metal?

Stage 1

Stage 2

Blistering of surface metal is typically associated with Stage 2 corrosion. In this stage, corrosion occurs beneath the protective coating or surface layer, causing the formation of blisters. This happens due to the buildup of corrosive agents, such as moisture or chemicals, under the surface, which leads to the separation of the coating from the metal underneath. The pressure from this buildup eventually causes the blister to form, creating visible surface damage.

The correct identification of this stage of corrosion is essential for assessing the integrity of the metal. It indicates that while the material's surface is compromised, it has not yet reached the stage where significant structural failure occurs. Recognizing blistering is an important part of routine inspections and helps inform necessary maintenance or remedial actions to prevent further deterioration.

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Stage 3

Stage 4

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