Fillet Weld

Definition - What does Fillet Weld mean?

A fillet weld is type of weld that has a roughly triangular cross section. A fillet weld typically requires less joint preparation than a groove weld, making it a very cost-effective joining method and therefore considerably more abundant in the welding industry.

A fillet weld can be made with many different welding processes. Gas metal arc welding, gas tungsten arc welding and shielded metal arc welding are popular welding processes used to make fillet welds.

Corrosionpedia explains Fillet Weld

A fillet weld can be subdivided into different types. These types include tee joints and lap joints; some variations of corner joints may also be considered fillet welds.

Fillet welds are frequently used in automatic welding situations. The complexity of groove welds make them more difficult to automate than fillet welds. Since fillet welds do not require extensive joint preparation and they are easier to automate than groove welds, they are preferred for many applications.

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