An arc welding process which produces coalescence of metals by heating them with an electric arc maintained between two metal electrodes in an atmosphere of hydrogen.
Welding Tech
The smallest particle of an element that posses all of the characteristics of that element. It consists of protons, neutrons, and electrons.
Pertaining to the condition of weld metal, welded joints, and weldments after welding, but prior to any subsequent thermal, mechanical or chemical treatments.
American Society for Testing and Materials
American Society of Mechanical Engineers