List of welding processes

This is a list of welding processes, separated into their respective categories. The associated N reference numbers (second column) are specified in ISO 4063 (in the European Union published as EN ISO 4063). Numbers in parentheses are obsolete and were removed from the current (1998) version of ISO 4063. The AWS reference codes of the American Welding Society are commonly used in North America.

Arc welding

Name N AWS Characteristics Applications
Atomic hydrogen welding (149) AHW Two metal electrodes in hydrogen atmosphere Historical
Bare metal arc welding (113) BMAW Consumable electrode, no flux or shielding gas Historical
Carbon arc welding (181) CAW Carbon electrode, historical Copper, repair (limited)
Flux cored arc welding 136
Continuous consumable electrode filled with flux Industry, construction
Gas metal arc welding 131
GMAW Continuous consumable electrode and shielding gas Industry
Gas tungsten arc welding 141 GTAW Nonconsumable electrode, slow, high quality welds Aerospace,Construction(piping),Tool and Die
Plasma arc welding 15 PAW Nonconsumable electrode, constricted arc Tubing, instrumentation
Shielded metal arc welding 111 SMAW Consumable electrode covered in flux, can weld any metal as long as they have the right electrode Construction, outdoors, maintenance
Submerged arc welding 121 SAW Automatic, arc submerged in granular flux
  1. Also known as metal inert gas (MIG) welding or metal active gas (MAG) welding
  2. Also known as tungsten inert gas (TIG) welding
  3. Also known as manual metal arc (MMA) welding or stick welding


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