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Glosssary of Corrosion Related Terms


To search the glossary simply click on the desired letter below to view a complete list of all the terms under that listing.

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U-bend specimen
Horseshoe-shaped test piece used to detect the susceptibility of a material to stress corrosion cracking.

Ultimate strength
The maximum stress (tensile. compressive, or shear) a material can sustain without fracture, determined by dividing maximum load by the original cross-sectional area of the specimen. Also called nominal strength or maximum strength.

Underfilm corrosion
Corrosion that occurs under organic films in the form of randomly distributed threadlike filaments or spots. In many cases this is identical to filiform corrosion.

Uniaxial stress
See principal stress (normal).

Uniform corrosion
(1) A type of corrosion attack (deterioration) uniformly distributed over metal surface. (2) Corrosion that proceeds at approximately the same rate over a metal surface. Also called general corrosion.