NF EN ISO 18275
Welding consumables - Covered electrodes for manual metal arc welding of high-strength steels - Classification
ISO 18275:2011 specifies requirements for classification of covered electrodes and deposited metal in the as-welded condition and in the post-weld heat-treated condition for manual metal arc welding of high-strength steels with a minimum yield strength greater than 500 MPa or a minimum tensile strength greater than 570 MPa.ISO 18275:2011 is a combined specification providing a 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. Subclauses and tables which carry the suffix letter "A" are applicable only to covered 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 ISO 18275:2011. Subclauses and tables which carry the suffix letter "B" are applicable only to covered 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 ISO 18275:2011. Subclauses and tables which do not have either the suffix letter "A" or the suffix letter "B" are applicable to all covered electrodes classified under ISO 18275:2011.
ISO 18275:2011 specifies requirements for classification of covered electrodes and deposited metal in the as-welded condition and in the post-weld heat-treated condition for manual metal arc welding of high-strength steels with a minimum yield strength greater than 500 MPa or a minimum tensile strength greater than 570 MPa.
ISO 18275:2011 is a combined specification providing a 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.
- Subclauses and tables which carry the suffix letter "A" are applicable only to covered 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 ISO 18275:2011.
- Subclauses and tables which carry the suffix letter "B" are applicable only to covered 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 ISO 18275:2011.
- Subclauses and tables which do not have either the suffix letter "A" or the suffix letter "B" are applicable to all covered electrodes classified under ISO 18275:2011.
Le présent document spécifie les prescriptions de classification des électrodes enrobées, en fonction du métal fondu hors dilution, à l'état brut de soudage ou à l'état relaxé pour le soudage manuel à l'arc des aciers ayant une limite d'élasticité minimum supérieure à 500 N/mm carré.
This document specifies requirements for classification of covered electrodes and deposited metal in the as-welded condition and in the post-weld heat-treated condition for manual metal arc welding of high-strength steels with a minimum yield strength greater than 500 MPa or a minimum tensile strength greater than 570 MPa. This document is a combined specification providing a classification utilizing a system based on the yield strength and an average impact energy of 47 J of the all-weld metal, or utilizing a system based on the tensile strength and an average impact energy of 27 J of the all-weld metal. a) Subclauses and tables which carry the suffix letter "A" are applicable only to covered electrodes classified under the system based on the yield strength and an average impact energy of 47 J of the all-weld metal given in this document. b) Subclauses and tables which carry the suffix letter "B" are applicable only to covered electrodes classified under the system based on the tensile strength and an average impact energy of 27 J of the all-weld metal given in this document. c) Subclauses and tables which do not have either the suffix letter "A" or the suffix letter "B" are applicable to all covered electrodes classified under this document.
- 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 exigences3
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4.1 Symbole du produit et/ou du procédé3
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4.2 Symbole des caractéristiques de traction du métal fondu hors dilution4
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4.3 Symbole de la résistance à la flexion par choc du métal fondu hors dilution5
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4.4 Symbole de la composition chimique du métal fondu hors dilution5
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4.5 Symbole du type d'enrobage7
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4.6 Symbole de l'état de traitement thermique après soudage du métal fondu hors dilution8
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4.7 Symbole du rendement nominal de l'électrode et du type de courant9
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4.8 Symbole de la position de soudage10
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4.9 Symbole de la teneur en hydrogène diffusible dans le métal déposé10
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4.10 Exigences relatives aux propriétés mécaniques et à la composition chimique11
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5 Essais des propriétés mécaniques16
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5.1 Généralités16
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5.2 Température de préchauffage et température entre passes16
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5.3 Séquence des passes16
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6 Analyse chimique16
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7 Essai pour soudures d'angle17
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8 Règles d'arrondissage18
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9 Contre-essais18
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10 Conditions techniques de livraison19
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11 Exemples de désignations19
- Annexe A (informative) Systèmes de classification21
- Annexe B (informative) Description des types d'enrobages - Classification d'après la limite d'élasticité et l'énergie de rupture de 47 J24
- Annexe C (informative) Description des types d'enrobages - Classification d'après la résistance à la traction et l'énergie de rupture de 27 J25
- Annexe D (informative) Notes sur l'hydrogène diffusible27
- Annexe E (informative) Description des symboles de composition chimique - Classification d'après la limite d'élasticité et l'énergie de rupture de 47 J28
- Annexe F (informative) Description des symboles de composition chimique - Classification d'après la résistance à la traction et l'énergie de rupture de 27 J29
- Bibliographie30
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