AWS A5.23/A5.23M:2007
Specification for Low-Alloy Steel Electrodes and Fluxes for Submerged Arc Welding
standard by American Welding Society, 06/25/2007
AWS A5.7/A5.7M:2007 (R2017)
Specification for Copper and Copper-Alloy Bare Welding Rods and Electrodes
standard by American Welding Society, 04/12/2007