Weld Joint

Definition - What does Weld Joint mean?

A weld joint is an area where the faying surfaces of two or more materials are joined together by a welding process with or without the addition of filler material. Pressure may or may not be used when making a weld at the weld joint.

Corrosionpedia explains Weld Joint

A weld joint may be either a fillet weld joint or a groove weld joint. These two joints include the following types: butt joint, lap joint, edge joint, tee joint and corner joint.

Surface preparation is often required when thick materials are joined by groove welding to ensure the weld joint is completely penetrated. Weld joints are often coated after they are cleaned to resist certain types of corrosion.

Weld joints can consist of similar and dissimilar metals. If joining dissimilar metals, extra considerations must be taken to avoid negative side effects such as galvanic corrosion. Also, it is important to select the proper filler material; otherwise the mechanical and chemical properties of the resultant weld could be negatively affected.

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