A value used in engineering calculations which is an indicator of the ability of one material to slide on another. A low coefficient of friction indicates a low rate of wear between sliding surfaces.

Refers to equal coating thickness on the core wire/rod.

The uniting of many materials into one body.

A puddle the is not crowded by slag or an erratic arc.

A surfacing variation that deposits or applies surfacing material usually to improve corrosion or heat resistance.