This document specifies requirements for the classification of covered electrodes and deposited metal in the as-welded condition and in the post-weld heat-treated condition for manual metal arc welding of nonalloy and fine grain steels with a minimum yield strength of up to 500 MPa or a minimum tensile strength of up to 570 MPa. This document is a combined specification providing for classification utilizing a system based upon the yield strength and the average impact energy of 47 J of all-weld metal, or utilizing a system based upon the tensile strength and the average impact energy of 27 J of all-weld metal. a) Clauses, subclauses and tables which carry the suffix letter A are applicable only to covered electrodes classified to the system based upon the yield strength and the average impact energy of 47 J of all weld metal in this Document. b) Clauses, subclauses and tables which carry the suffix letter B are applicable only to covered electrodes classified to the system based upon the tensile strength and the average impact energy of 27 J of all weld metal in this Document. c) Clauses, subclauses and tables which do not have either the suffix letter A or the suffix letter B are applicable to all covered electrodes classified in this Document.