A hole-like discontinuity formed by gas entrapment during solidification.

It is installed behind the removable seat in a plasma torch head to enable the safety interlock.

A circular weld made through a hole in one member of a lap or T joint.

Ability of a metallic state to undergo permanent deformation without rupture.

A thermal spraying process in which a non-transferred arc is used to create an arc plasma for melting and propelling the surfacing material to the substrate.