BS EN 12072:2000 – Welding consumables Ð Wire electrodes, wires and rods for arc welding of stainless and heat-resisting steels Ð Classification

This standard specifies requirements for classification of wire electrodes, wires and rods for gas shielded metal arc welding, gas tungsten arc welding, plasma arc welding and submerged arc welding of stainless and heat resisting steels. The classification of the wire electrodes, wires and rods is based on their chemical composition.
2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies.
EN 759 ISO 31-0:1992 Welding consumables – Technical delivery conditions for welding filler metals – Type of product, dimensions, tolerances and marking. Quantities and units – Part 0: General principles
3 Classification A wire electrode, wire or rod shall be classified in accordance with its chemical composition in Table 1. The classification is divided into two parts:
a) the first part gives a symbol indicating the product/process to be identified;
b) the second part gives a symbol indicating the chemical composition of the wire electrode, wire or rod.
4 Symbols and requirements
4.1 Symbol for the product/process The symbol for the wire electrode, wire and/or rod used in the arc welding process shall be the letter G (gas shielded metal arc welding), W (gas tungsten arc welding), P (plasma arc welding) or S (submerged arc welding). NOTE: One product form can be used for more than one welding process.
4.2 Symbol for the chemical composition of wire electrodes, wires and rods The symbol in Table 1 indicates the chemical composition of the wire electrode, wire or rod, determined under conditions given in clause 6. 5 Properties of the all-weld metal Properties of the all-weld metal are not part of the classification.
NOTE 1: The influence of the shielding gas or flux on the chemical composition of the allweld metal is considered. Differences between the chemical composition of the all-weld metal and the wire electrode, wire or rod can occur.
NOTE 2: Proof and tensile strength of the weld metal made by a consumable listed in Table 1 is expected to comply with the minimum requirements in annex A. Elongation and impact properties of the weld metal can deviate from the minimum values specified for the corresponding parent metal as a result of variations in the microstructure.
BS EN 12072:2000 – Welding consumables Ð Wire electrodes, wires and rods for arc welding of stainless and heat-resisting steels Ð Classification