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Water Immersion

Last updated: April 6, 2020

What Does Water Immersion Mean?

Water immersion refers to a corrosion testing technique that is characterized by the full or partial submersion of a metal in fresh and/or salt water to evaluate its corrosive response in similar application environments.

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Corrosionpedia Explains Water Immersion

Water immersion testing is governed by the ASTM G31 regulatory guidelines. This guideline publication provides a simple and uniform approach to determine metal corrosion rates in a variety of aqueous solutions.

The metal to be evaluated is submerged in a static fluid test environment for a period of at least 24 hours or up to several months. ASTM G31 may then be referenced to determine the approximate corrosion rate unique to the metal, immersion fluid and time span of testing.

It should be noted that ASTM G31 cannot be applied to examine certain types of corrosion such as crevice, pitting or intergranular corrosion.

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