SIST EN 756:2004
(Main)Welding consumables - Solid wires, solid wire-flux and tubular cored electrode-flux combinations for submerged arc welding of non alloy and fine grain steels - Classification
Welding consumables - Solid wires, solid wire-flux and tubular cored electrode-flux combinations for submerged arc welding of non alloy and fine grain steels - Classification
This standard specifies requirements for classification of electrode-flux combinations and all-weld metal in the as-welded condition for submerged arc welding of non alloy and fine grain steels with a minimum yield strength of up to 500 MPa. Classification can be made with solid wire electrodes or tubular cored electrodes. One flux may be classified with different electrodes. The solid wire electrode is also classified separately based on its chemical composition. Fluxes for the single and two run techniques are classified on the basis of the two run technique.
Schweißzusätze - Massivdrähte, Fülldrähte und Drahtpulver-Kombinationen zum Unterpulverschweißen von unlegierten Stählen und Feinkornbaustählen - Einteilung
Diese Norm legt Anforderungen für die Einteilung von Drahtpulver-Kombinationen und reinem Schweißgut im Schweißzustand für das Unterpulverschweißen von unlegierten Stählen und Feinkornstählen mit einer Mindest-streckgrenze bis zu 500 MPa fest. Die Einteilung erfolgt in Drahtelektrode oder Fülldrahtelektrode. Ein Pulver kann mit verschiedenen Drahtelektroden eingestuft werden. Die Drahtelektrode wird ebenfalls getrennt nach ihrer chemischen Zusammensetzung eingeteilt. Pulver, die für Einlagen- und Lage/Gegenlage-Schweißen geeignet sind, werden entsprechend dem Lage/Gegenlage-Schweißen eingeteilt.
Produits consommables pour le soudage - Fils pleins, couples fils pleins-flux et fils fourrés-flux pour le soudage a l'arc sous flux des aciers non alliés et a grains fins - Classification
La présente norme spécifie les exigences relatives a la classification des couples fils-flux et du métal fondu hors dilution a l'état brut de soudage pour le soudage a l'arc sous flux des aciers non alliés et a grains fins ayant une limite d'élasticité minimale pouvant atteindre 500 Mpa. La classification peut etre obtenue avec des fils-électrodes pleins ou avec des fils-électrodes fourrés. Un flux peut etre classifié avec des fils-électrodes différents. Le fil-électrode plein est également classifié séparément en fonction de sa composition chimique. Les flux convenant pour la technique a une et a deux passes sont classifiés sur la base de la technique a deux passes.
Dodajni materiali za varjenje - Masivne žice in kombinacije masivnih žic in praškov in cevnih strženskih elektrod in praškov za obločno varjenje nelegiranih in finozrnatih jekel pod praškom - Razvrstitev
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Schweißzusätze - Massivdrähte, Fülldrähte und Drahtpulver-Kombinationen zum Unterpulverschweißen von unlegierten Stählen und Feinkornbaustählen - EinteilungProduits consommables pour le soudage - Fils pleins, couples fils pleins-flux et fils fourrés-flux pour le soudage a l'arc sous flux des aciers non alliés et a grains fins - ClassificationWelding consumables - Solid wires, solid wire-flux and tubular cored electrode-flux combinations for submerged arc welding of non alloy and fine grain steels - Classification25.160.20Potrošni material pri varjenjuWelding consumablesICS:Ta slovenski standard je istoveten z:EN 756:2004SIST EN 756:2004en01-junij-2004SIST EN 756:2004SLOVENSKI
STANDARDSIST EN 756:19961DGRPHãþD
SIST EN 756:2004
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 756March 2004ICS 25.160.20Supersedes EN 756:1995English versionWelding consumables - Solid wires, solid wire-flux and tubularcored electrode-flux combinations for submerged arc welding ofnon alloy and fine grain steels - ClassificationProduits consommables pour le soudage - Fils pleins,couples fils pleins-flux et fils fourrés-flux pour le soudage àl'arc sous flux des aciers non alliés et à grains fins -ClassificationSchweißzusätze - Massivdrähte, Fülldrähte undDrahtpulver-Kombinationen zum Unterpulverschweißen vonunlegierten Stählen und Feinkornbaustählen - EinteilungThis European Standard was approved by CEN on 2 January 2004.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2004 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 756:2004: ESIST EN 756:2004
EN 756:2004 (E)2ContentsPageForeword.3Introduction.41Scope.52Normative references.53Classification.54Symbols and requirements.64.1Symbol for the process.64.2Symbol for the tensile properties.64.2.1Multi run technique.64.2.2Two-run technique.64.3Symbol for the impact properties of all-weld metal or two-run weldment.64.4Symbol for the type of welding flux.74.5Symbol for the chemical composition of solid wire electrodes or the all-weld metaldeposited by a tubular cored electrode-flux combinations.75Mechanical tests.95.1Multi run technique.95.2Two run technique.106Chemical analysis.107Technical delivery conditions.108Designation.10Bibliography.12SIST EN 756:2004
EN 756:2004 (E)3ForewordThis document (EN 756:2004) has been prepared by Technical Committee CEN/TC 121 “Welding”, thesecretariat of which is held by DIN.This European Standard shall be given the status of a national standard, either by publication of an identical textor by endorsement, at the latest by September 2004, and conflicting national standards shall be withdrawn atthe latest by September 2004.This document supersedes EN 756:1995.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic,Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerlandand United Kingdom.SIST EN 756:2004
EN 756:2004 (E)4IntroductionThis standard proposes a classification in order to designate solid wire electrodes by chemical analyses andsolid wire-flux combinations in terms of the yield strength, tensile strength and elongation and impact propertiesof the all-weld metal. Tubular cored electrode-flux combinations are designated by the chemical composition;yield strength, tensile strength and elongation and impact properties of the all-weld metal. The ratio of yield totensile strength of weld metal is generally higher than that of parent metal. Users should note that matchingweld metal yield strength to parent metal yield strength will not necessarily ensure that the weld metal tensilestrength matches that of the parent material. Where the application requires matching tensile strength,therefore, selection of the consumable should be made by reference to column 3 of Table 1.Although combinations of electrodes and fluxes supplied by individual companies may have the same grading,the individual electrodes and fluxes from different companies are not interchangeable unless verified accordingto this standard.It should be noted that the mechanical properties of all-weld metal test specimens used to classify the electrode-flux combinations will vary from those obtained in production joints because of differences in weldingprocedures such as electrode size and parent metal chemical composition.SIST EN 756:2004
EN 756:2004 (E)51 ScopeThis standard specifies requirements for classification of electrode-flux combinations and all-weld metal in theas-welded condition for submerged arc welding of non alloy and fine grain steels with a minimum yield strengthof up to 500 MPa. Classification can be made with solid wire electrodes or tubular cored electrodes. One fluxmay be classified with different electrodes. The solid wire electrode is also classified separately based on itschemical composition. Fluxes for the single and two run techniques are classified on the basis of the two runtechnique.2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to EuropeanStandards only when incorporated in it by amendment or revision. For undated references the latest edition ofthe publication referred to applies (including amendments).EN ISO 544, Welding consumables – Technical delivery conditions for welding filler materials – Type of product,dimensions, tolerances and markings (ISO 544:2003).EN 760, Welding consumables – Fluxes for submerged arc welding – Classification.EN 1597-1, Welding consumables - Test methods - Part 1: Test piece for all-weld metal test specimens in steel,nickel and nickel alloys.EN 1597-2, Welding consumables - Test methods - Part 2: Preparation of test piece for single-run and two-runtechnique test specimens in steel.EN ISO 6847, Welding consumables - Deposition of a weld metal pad for chemical analysis (ISO 6847:2000).EN ISO 13916, Welding – Guidance on the measurement of preheating temperature, interpass temperature andpreheat maintenance temperature (ISO 13916:1996).ISO 31-0:1992, Quantities and units – Part 0: General principles.3 ClassificationThe classification includes all-weld metal properties obtained with a manufacturer's specific electrode-fluxcombination as given below. A solid wire electrode may be separately classified with the symbol for its chemicalcomposition in Table 5.The classification is divided into five parts:1) The first part gives a symbol indicating the process to be identified.2) The second part gives a symbol indicating strength and elongation of all-weld metal for multi runtechnique or the strength of the parent material used in classification for the two run technique.3) The third part gives a symbol indicating impact properties of the all-weld metal or the two run weldedjoint.4) The fourth part gives a symbol indicating the type of flux used.5) The fifth part giv
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