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Butt Joint

Last updated: July 19, 2024

What Does Butt Joint Mean?

A butt joint is a welded point of two metallic materials that are joined in the same plane at a 180° angle (i.e., end-to-end).

Butt joints are often prone to excess porosity, increased moisture entrapment, cracking and crevice corrosion due to the containment geometry generated by the angle at which it is formed.

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Corrosionpedia Explains Butt Joint

Corrosion fatigue is common in butt joints, however butt joints have come into wider use in structural and machine applications.

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