Welding Essentials: Questions and Answers

Appendix C: C-AWS Letter Designations for Welding & Allied Processes

Table C-1: Welding and brazing processes and their AWS letter designations.

Group

Welding Process

AWS Letter Designation

Arc Welding

Carbon arc

CAW

Electrogas welding

EGW

Flux cored arc welding

FCAW

Gas metal arc welding

GMAW

- Pulsed arc

GMAW-P

- Short-circuiting arc

GMAW-S

Gas tungsten arc

GTAW

- Pulsed arc

GTAW-P

Plasma arc welding

PAW

Shielded metal arc welding

SMAW

Stud arc welding

SW

Submerged arc welding

SAW

Brazing

Block brazing

BB

Carbon arc brazing

CAB

Diffusion brazing

DB

Dip brazing

DB

Flow brazing

FLB

Furnace brazing

FB

Induction brazing

IB

Infrared brazing

IRB

Resistance brazing

RB

Torch brazing

TB

Other welding processes

Electron beam welding

EBW

Electroslag welding

ESW

Flow welding

FLOW

Induction welding

IW

Laser beam welding

LBW

Percussion welding

PEW

Thermit welding

TW

Oxyfuel gas welding

Oxyfuel welding

OFW

Air acetylene welding

AAW

Oxyacetylene welding

OAW

Oxyhydrogen welding

OHW

Pressure gas welding

PGW

Resistance welding

Flash welding

FW

Projection welding

PW

Resistance seam welding

RSEW

Resistance spot welding

RSW

Soldering

Dip soldering

DS

Furnace soldering

FS

Induction soldering

IS

Infrared soldering

IRS

Iron soldering

INS

Resistance soldering

RS

Torch soldering

TS

Wave soldering

WS

Solid state welding

Cold welding

CW

Diffusion welding

DFW

Explosion welding

EXW

Forge welding

FOW

Friction welding

FRW

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