Classifications: EN ISO A; G 38 2 C1 3Si1; Weld Metal; EN ISO A; G 42 3 M21 3Si1; Weld Metal; EN ISO A; G 3Si1; Wire Electrode;. ISO – Download as PDF File .pdf), Text File .txt) or read online. BS en ISO Welding and Allied Processes. Flux and Gas Shielded. ISO. First edition. Welding consumables — Wire electrodes and deposits for gas shielded metal arc welding of non alloy and fine grain.
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Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. It is identical with ISO It supersedes BS EN A list of organizations represented on this committee can be obtained on request to its secretary. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member.
A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by Novemberand conflicting national standards shall be withdrawn at the latest by November Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights.
This document supersedes EN Endorsement notice The text of ISO The work of preparing International Standards is normally carried out through ISO technical committees.
Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee.
International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member 114341 for voting.
Attention is drawn to the possibility that some of the elements of this International Standard 14431 be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Application of either is of classification designation or both where suitable identifies a product as classified according to this International Standard.
This International Standard provides a classification in order to designate wire electrodes in terms of their chemical composition and, 41341 required, in terms of the yield strength, tensile strength and elongation of the all-weld metal. The ratio of yield to tensile strength of weld metal is generally higher than that of parent metal. Users should note that matching weld metal yield strength to parent metal yield strength will not necessarily ensure that the weld metal tensile strength matches that of the parent material.
Where the application of the material requires matching tensile strength, therefore, selection of the consumable should be made by reference to column 3 of Table 1A or 1B.
It should be noted that the mechanical properties of all-weld metal test specimens used to classify the electrodes will vary from those obtained in production joints because of 143441 in welding procedure such as electrode size, width of weave, welding position and material composition.
One wire electrode can be tested and classified with different shielding gases. This document constitutes a combined specification providing classification utilizing a system based upon the yield strength and the average impact energy of 47 J of all-weld metal, or utilizing a system based upon the tensile strength and the average impact energy of 27 J of all-weld metal.
For dated references, subsequent amendments to, or revisions of, any of these publications do bss apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent bbs of the normative documents indicated below.
For undated references, the latest edition of the normative document referred to applies.
General principles ISOWelding consumables — Technical delivery conditions for welding filler metals — Type of product, dimensions, tolerances and marking ISOWelding — Guidance on the measurement of preheating temperature, interpass temperature and preheat maintenance temperature ISO 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 to the classification requirements in both systems. Then either or both classification designations can be used for the product. A wire electrode shall be classified according to its chemical composition as in Table 3A or Table 3B.
A weld deposit shall be classified with additional symbols according to the mechanical properties of its all-weld metal, using a shielding gas from a specific group. Three test specimens shall be tested. Only one individual value may be lower than 47 J but not lower than 32 J. Five test specimens shall be tested. The lowest and highest values obtained shall be disregarded.
BS EN ISO 14341:2011
Two of the three remaining values shall be greater than the specified 27 J level, one of the three may be lower but shall be no less than 20 J. The average of the three remaining values shall be at least 27 J. The impact value shall be determined by the average of the three test specimens.
The average of the three values shall be 47 J or greater. The symbol C shall be used when the classification has been performed with the shielding gas ISO — C1, carbon dioxide.
If 1,2 mm is not manufactured, closest size at settings as recommended by the manufacturer shall be used.
The interpass temperature shall be measured using temperature indicator crayons, surface thermometers or thermocouples see ISO If, after any pass, this interpass temperature is exceeded, the test assembly shall be cooled in air to a temperature below that limit. If, after any pass, this interpass temperature is exceeded, the test assembly shall be cooled in air to a temperature within that range. If below ba indicated interpass temperature, the test assembly shall be reheated into interpass range.
The direction 13441 welding used to complete a eh consisting of two passes shall not vary. However, the direction of welding of layers shall be alternated. Passes per layer Number of layers 1,2 1 to top 2a 6 to 10 a The top two layers may be completed with 3 passes per layer. The direction of welding for each pass shall not vary. However, the direction of welding for different passes may be alternated.
Passes per layer Number of layers 1,2 1 to top 2 or 3 6 to kso 5. Any analytical technique may be used, but in case of dispute, reference shall be made to established published methods. The results of both retests shall meet the requirement.
Specimens for the retest may be taken from the original test assembly or from a new test assembly. For chemical analysis, retest need only be for those specific elements that failed to meet their test requirement. If the results of one or both retests fail to meet the requirement, the material under test shall be considered as not meeting the requirements of this specification for that classification.
In the event that during preparation or after completion of any test, it is clearly determined that prescribed or proper procedures were not followed in preparing the weld test assembly or test specimen sor in conducting the tests, the test shall be considered invalid, without regard to whether the test was actually completed or whether the test results met, or failed to meet, the requirement.
That test shall be repeated, following proper prescribed procedures. In this case, the requirement for doubling the number of test specimens does not apply. ISO A-G3Si1 9B Classification by tensile strength and 27 J impact energy The designation of the wire electrode shall follow the principle given in the examples below.
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If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. ISO Welding — Studs and ceramic ferrules for arc stud welding. Flux and gas shielded 143411 welding processes. Procurement guidelines for consumables.