Fusion over the entire fusion faces and between all adjoining weld beads.

A joint root condition in a groove weld in which weld metal extends through the joint thickness.

A groove weld in which weld metal extends through the joint thickness.

An arc welding power source with a volt ampere relationship yielding a small welding current change from a large arc voltage change.

An arc welding power source with a volt-ampere relationship yielding a large welding current change from a small arc voltage change.

A plasma arc column that is shaped by the constricting orifice in the nozzle of the plasma arc torch or plasma spraying gun.

A device that transfers current to a continuous electrode.

The distance from the contact tube to the end of the gas nozzle.

A fillet weld having a convex face.

The maximum distance from the face of a convex fillet weld perpendicular to a line joining the weld toes.

A composite filler metal electrode consisting of a core of a bare electrode or metal cored electrode to which a covering sufficient to provide a slag layer on the weld metal has been applied. The covering may contain materials providing such functions as shielding from the atmosphere, deoxidation, and arc stabilization, and can serve as a source of metallic additions to the weld.

A fracture type discontinuity characterized by a sharp tip and high ratio of length and width to opening displacement.

A depression in the weld face at the termination of a weld bead.