Dissimilar metals in contact with each other in presence of moisture, acting as a battery and causing an electrolytic etching deteriorating effect.
Gang Die
Multiple dies mounted on a single tool, allowing for the simultaneous stamping of multiple parts.
Ganged
See Nesting.
Gas Metal Arc Welding GMAW
See MIG Weld.
Gas Welding
Melting and fusing metals together by use of an oxygen and flammable gas mixture.
Gauge
1 Instrument for measuring, testing, or registering. 2 Numeric scale for metal thickness.
Gaylord
See Master Carton.
Gloss
Subjective term used to describe the relative amount and nature of mirror-like specular reflection.
Glossmeter
Instrument for measuring the degree of gloss in relative terms. Such instruments measure the light reflected at a selected specular angle.
Go/No-Go Gauge
Measuring device with two registration elements which determine if a feature to be measured is between two established limits.
Gouge
Surface imperfection, deeper than a scratch, often with raised edges.
Grain Direction
1 Crystaline orientation of material in the direction of mill rolling. 2 Orientation of a surface finish generated by abrasive method.
Grinding
Process of removing material by abrasion.
Grippers
Material clamping devices often serrated for additional holding force to restrain material during a die operation.
Grit
Mineral particles used for abrasive metal removal.
GTA Welding (Gas Tungsten Arc)
Or TIG Welding (Tungsten Inert Gas), a welding process that uses a tungsten electrode to produce the weld, allowing for greater control and stronger, higher quality welds.