Refers to carbon steel and low alloy high tensile steel covered electrodes in the sizes 3,15 to 6,3 mm. For the practical use of ISO 2401, the precision of measurement specified is sufficient because of the inherent variation in characteristics of individual electrodes.
ISO 2401:1972 history
2018ISO 2401:2018 Welding consumables - Covered electrodes - Determination of the efficiency, metal recovery and deposition coefficient
1972ISO 2401:1972 Covered electrodes; Determination of the efficiency, metal recovery and deposition coefficient