arc - auxi
- austenitic Ni-Cr stainless steel
- austenitic steel
- austenitic structure
- austenitization
- austenitizing
- austenizing
- Australasian Institute of Mining and Metallurgy
- Australian Institute of Metals
- auto radiograph ic method
- autochromatography
- autoclave
- autoclaved
- autoclaving
- autocrack
- autocrucible malting
- autodiffusion
- autoelectronic emission
- autoepitaxis
- autogenous bath smelter
- autogenous fusing
- autogenous hardening
- autogenous medium
- autogenous mill
- autogenous smelting
- autogenous weld
- autographic pyrometer
- automated cyclic compacting
- automatic (oxygen) cutting
- automatic (welding) wire
- automatic amplitude control
- automatic bander
- automatic bin gate operator
- automatic blast-furnace control system
- automatic bonding unit
- automatic buffing machine
- automatic butt welding
- automatic card-programmed rolling mill
- automatic casing cutter
- automatic catcher
- automatic catching