ISO 3581:2016 pdf free

ISO 3581:2016 pdf free.Welding consumables – Covered electrodes for manual metal arc welding of stainless and heat-resisting steels
Classification designations are based upon two approaches for indicating the chemical composition of the all-weld metal deposit obtained with a given electrode.
The “nominal composition” approach uses designation components indicating directly the nominal levels of certain alloying elements, given in a particular order, and some symbols for low but significant levels of other elements, whose levels are not conveniently expressed as integers. The “alloy type” approach uses tradition-based three-digit or four-digit designations for alloy families, and occasionally an additional character or characters for compositional modifications of each original alloy within the family. Both designation approaches include additional designators for some other classification requirements, but not entirely the same classification requirements, as will be clear from the following clauses.
Table 1 lists the tests required for classification of an electrode in each approach. In many cases, a given commercial product can be classified using both approaches. Then either or both classification designations can be used for the product. The classification includes all-weld metal prop-erties obtained with a covered electrode as given below. The classification is based on an electrode
diameter of 4 mm with the exception of testing for welding position. When 4 mm diameter elec-trodes are not manufactured, the next closest diameter shall be tested.
The classification includes all-weld metal prop-erties obtained with a covered electrode as given below, The classification is based on an electrode diameter of 4 mm for mechanical properties, with the exception of testing for welding position and for chemical analysis of the weld metal. When 4 mm diameter electrodes are not manufactured,the next closest diameter shall be tested.
The symbol for the covered electrode used in the manual metal arc welding process for stainless and heat-resisting steels in accordance with ISO 3581-B shall be the letters ES. The initial letter “E” indicates a covered electrode while the letter “S” indicates
stainless and heat-resisting steels.ISO 3581 pdf free.