This specification provides requirements for the classification of solid and composite carbon steel and low-alloy steelectrodes and fluxes for submerged arc welding. Electrode classification is based on chemical composition of the eletrode for solid electrodes, and chemical composition of the weld metal for composite electrodes. Fluxes may be classifieusing a multiple pass classification system or a two-run classification system, or both, under this specification. Multipass classification is based on the mechanical properties and the deposit composition of weld metal produced with thflux and an electrode classified herein. Two-run classification is based upon mechanical properties only. Additiorequirements are included for sizes, marking, manufacturing and packaging. The form and usability of the flux are alsincluded. A guide is appended to the specification as a source of information concerning the classification systemployed and the intended use of submerged arc fluxes and electrodes.

This specification makes use of both U.S. Customary Units and the International System of Units (SI). Since these are noequivalent, each system must be used independently of the other.