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 letter “B’ are applicable to all tubular cored electrodes classified in accordance with this International Standard.
It is recognized that the operating characteristics of tubular cored electrodes can be modified by the use of pulsed current, but for the purposes of this International Standard, pulsed current is not used for determining the electrode classification.
2 Normative references
The following referenced documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 544, Welding consumables — Technical delivery conditions for filler materials and fluxes — Type of product, dimensions, tolerances and markings
ISO 3690, Welding and allied processes — Determination of hydrogen content in arc weld metal
ISO 6947, Welding and allied processes — Welding positions
ISO 14175, Welding consumables — Gases and gas mixtures for fusion welding and allied processes
ISO 14344. Welding consumables — Procurement offihler materials and fluxes
ISO 15792-1:2000/Amd 1:20 11, Welding Consumables — Test methods — Part 1: Test methods for all-weld metal test specimens in steel, nickel and nickel alloys
ISO 15792-3, Welding consumables — Test methods — Part 3: Classification testing of positional capacity and root penetration of welding consumables in a fillet weld
3 Classification
Classification designations are based upon two approaches to indicate the chemical composition, the tensile properties, and the impact properties of the all-weld metal obtained with a given electrode. The two designation approaches include additional designators for some other classification requirements, but not all as will be clear from the following sections. In most cases, a given commercial product can be classified in both systems. Then, either or both classification designations can be used for the product.
The classification includes all-weld metal properties obtained with a tubular cored electrode and appropriate shielding gas combination as given below. With the exception of the symbol for welding position which is based on ISO 15792-3, the classification is based on the tubular cored electrode size 1,2 mm or if this is not manufactured, the next larger diameter manufactured.ISO 17634 pdf download.
Tags: Welding consumables
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