BS EN ISO 21952:2012 pdf free.Welding consumables – Wire electrodes, wires, rods and deposits for gas shielded arc welding of creep-resisting steels – Classification (ISO 21952:2012). BS EN ISO 21952 specifies requirements for classification of wire electrodes, wires and rods for gas shielded metal arc welding and tungsten inert-gas welding of creep-resisting steels, and for their deposits in the as-welded or post-weld heat-treated condition. One wire electrode can be tested and classified with different shielding gases. This International Standard is a combined specification providing for classification utilizing a system based upon the chemical composition of wire electrodes, wires and rods with requirements for yield strength and average impact energy of 47 J of all-weld metal, or utilizing a system based upon the tensile strength of the all-weld metal deposits and the chemical composition of wire electrodes, wires and rods. a) Clauses. subclauses and tables which carry the suffix letter “K are applicable only to wire electrodes, wires, rods and deposits classified in accordance with the system based upon the chemical composition with requirements for yield strength and the average impact energy of 47 J of all-weld metal deposits under this International Standard. b) Clauses, subclauses and tables which carry the…

ISO 17634-2015 pdf free.Welding consumables – Tubular cored electrodes for gas shielded metal arc welding of creep-resisting steels – Classification. ISO 17634 specifies requirements for classification of tubular cored electrodes used in the post-weld heat-treated condition for gas shielded metal arc welding of creep-resisting and low alloy elevated temperature steels. One tubular cored electrode can be tested and classified with different shielding gases. This International Standard is a combined specification providing for classification utilizing a system based upon the chemical composition of all-weld metal or utilizing a system based upon the tensile strength and the chemical composition of all-weld metal. 1) Paragraphs and tables which carry the suffix letter are applicable only to tubular cored electrodes classified to the system based upon chemical composition with requirements for the yield strength and the average impact energy of 47 J of all-weld metal in accordance with this International Standard. 2) Paragraphs and tables which carry the suffix letter ‘B are applicable only to tubular cored electrodes classified to the system based upon the tensile strength and chemical composition of all- weld metal in accordance with this International Standard. 3) Paragraphs and tables which have neither the suffix letter A nor the suffix…

ISO 544-2017 pdf free.Welding consumables – Technical delivery conditions for filler materials and fluxes一Type of product,dimensions, tolerances and markings. The flux shall be granular and so constituted that it can be conveyed freely by the flux feed system. The particle size distribution shall be uniform and consistent in the different packaging units. The fluxes may be obtainable in different particle size distributions (see ISO 14174). 6 Rounding procedure Actual test values obtained shall be subject to IS0 80000-1:2009, B.3, Rule A. If the measured values are obtained by equipment calibrated in units other than those of this document, the measured values shall be converted to the units of this document before rounding. If an average value is to be compared to the requirements of this document, rounding shall be done only after calculating the average. The rounded results shall fulfil the requirements of the appropriate table for the classification under test. 7 Condition of welding consumables 7.1 Covered electrodes The electrode covering shall be concentric and consistent along the electrode length in order to avoid asymmetrical melting-off of the covering during welding. The electrode covering shall not exhibit any irregularities, cracks or other surface defects which would adversely affect the…