NF EN ISO 636, A81-325 (10/2024)

ISO 636:2017 specifies the requirements for the classification of rods and wires in the as-welded state and in the heat-treated state after welding, in TIG welding (arc welding under inert gas protection with a welding electrode). tungsten) unalloyed steels and fine-grained steels having a minimum yield strength of up to 500 MPa or a minimum tensile strength of up to 570 MPa. ISO 636:2017 proposes a mixed specification allowing classification using a system based either on the yield strength and the average breaking energy of 47 J for the undiluted molten metal, or on the tensile strength and energy average rupture of 27 J for the molten metal without dilution. a) Paragraphs and tables bearing the suffix “A” are applicable only to rods and wires classified according to the system based on the yield strength and the average breaking energy of 47 J for the molten metal undiluted in accordance with this document. (b) Paragraphs and tables bearing the suffix “B” are applicable only to rods and wires classified according to the system based on tensile strength and average breaking energy of 27 J for molten metal undiluted in accordance with this document. (c) Paragraphs and tables containing neither the suffix “A” nor the suffix “B” are applicable to all rods and wires classified in accordance with this document.
(Automatic translation from French)