glossary

Pertaining to the control of a process with equipment that requires manual adjustment of the equipment controls in response to visual observation of the operation, with the torch, gun, wire guide assembly, or electrode holder held by a mechanical device.

Visible root reinforcement produced in a joint welded from one side.

The temperature range between solidus and liquidus.

Stick electrodes that have coating ingredients that are very low in hydrogen content. The low hydrogen level is achieved primarily by keeping the moisture content of the coating to a bare minimum.

A test in which a specimen is prepared with a fine finish, etched, and examined under low magnification.