NF EN ISO 18276
Welding consumables - Tubular cored electrodes for gas-shielded and non-gas-shielded metal arc welding of high-strength steels - Classification
ISO 18276:2005 specifies requirements for classification of tubular cored electrodes with or without a gas shield for metal arc welding of high-strength steels in the as-welded condition or in the post-weld heat-treated condition with a minimum yield strength higher than 550 MPa or a minimum tensile strength higher than 590 MPa. One tubular cored electrode can be tested and classified with different shielding gases, if used with more than one. This document is a combined specification providing classification utilizing a system based upon the yield strength and an average impact energy of 47 J of the all-weld metal, or utilizing a system based upon the tensile strength and an average impact energy of 27 J of the all-weld metal.
ISO 18276:2005 specifies requirements for classification of tubular cored electrodes with or without a gas shield for metal arc welding of high-strength steels in the as-welded condition or in the post-weld heat-treated condition with a minimum yield strength higher than 550 MPa or a minimum tensile strength higher than 590 MPa. One tubular cored electrode can be tested and classified with different shielding gases, if used with more than one.
This document is a combined specification providing classification utilizing a system based upon the yield strength and an average impact energy of 47 J of the all-weld metal, or utilizing a system based upon the tensile strength and an average impact energy of 27 J of the all-weld metal.
Le présent document spécifie les exigences pour la classification des fils fourrés et du métal déposé à l'état brut de soudage ou à l'état détensionné, pour le soudage à l'arc sous protection gazeuse des aciers à haute résistance ayant une limite d'élasticité minimale spécifiée supérieure à 500 N/mm2.
<p>ISO 18276:2017 specifies the requirements for classification of tubular cored electrodes with or without a gas shield for metal arc welding of high-strength steels in the as-welded condition or in the post-weld heat-treated condition with a minimum yield strength higher than 550 MPa or a minimum tensile strength higher than 590 MPa. One tubular cored electrode can be tested and classified with different shielding gases, if used with more than one.</p> <p>ISO 18276:2017 is a combined specification providing classification utilizing a system based upon the yield strength and an average impact energy of 47 J of the all-weld metal, or utilizing a system based upon the tensile strength and an average impact energy of 27 J of the all-weld metal.</p> <p>- Subclauses and tables which carry the suffix letter "A" are applicable only to tubular cored electrodes classified under the system based upon the yield strength and an average impact energy of 47 J of the all-weld metal given in this document.</p> <p>- Subclauses and tables which carry the suffix letter "B" are applicable only to tubular cored electrodes classified under the system based upon the tensile strength and an average impact energy of 27 J of the all-weld metal given in this document.</p> <p>- Subclauses and tables which do not have either the suffix letter "A" or the suffix letter "B" are applicable to all tubular cored electrodes classified under this document.</p> <p>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 document, pulsed current is not used for determining the electrode classification.</p>
- Avant-proposiv
- Introductionv
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1 Domaine d'application1
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2 Références normatives1
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3 Classification2
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4 Symboles et exigences4
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4.1 Symbole du produit et/ou du procédé4
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4.2 Symbole pour les caractéristiques de traction du métal fondu hors dilution4
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4.3 Symbole pour les caractéristiques de résistance à la flexion par choc du métal fondu hors dilution4
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4.4 Symbole pour la composition chimique du métal fondu hors dilution5
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4.5 Symbole pour le type de fourrage du fil-électrode ou pour les caractéristiques d'usabilité du fil-électrode8
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4.6 Symbole pour le gaz de protection9
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4.7 Symbole pour la position de soudage10
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4.8 Symbole pour la teneur en hydrogène du métal déposé11
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4.9 Symbole pour la condition de traitement thermique après soudage11
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4.10 Procédure d'arrondissage11
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5 Essais mécaniques11
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5.1 Températures de préchauffage et entre passes12
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5.2 Séquence des passes13
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5.3 Condition de traitement thermique après soudage13
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6 Analyse chimique14
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7 Essais pour soudures d'angle14
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8 Contre-essais15
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9 Conditions techniques de livraison15
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10 Exemples de désignation16
- Annexe A (informative) Systèmes de classification17
- Annexe B (informative) Description des désignations de composition des fils-électrodes selon le système de classification basé sur la résistance à la traction et l'énergie de rupture minimale de 27 J20
- Annexe C (informative) Description des types de fourrage dans le système de classification d'après la limite d'élasticité et l'énergie de rupture moyenne de 47 J21
- Annexe D (informative) Description des types de caractéristiques d'usabilité dans le système de classification d'après la résistance à la traction et l'énergie de rupture moyenne de 27 J22
- Annexe E (informative) Notes sur la teneur en hydrogène24
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