Welding consumables. Tubular cored electrodes for gas-shielded and non-gas-shielded metal arc welding of high strength steels. Classification (ISO 18276:2017)
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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. 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. - 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. - 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. - 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. 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.
Tämän julkaisun valmistelusta Suomessa vastaa Metalliteollisuuden Standardisointiyhdistys ry, puh. 09 19 231 (vaihde).
Sisällysluettelo
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
5 Symbols and requirements
5.1 Symbol for the product/process
5.2 Symbol for tensile properties of all-weld metal
5.3 Symbol for impact properties of all-weld metal
5.4 Symbol for chemical composition of all-weld metal
5.5 Symbol for type of electrode core or the usability characteristics of the electrodes
5.6 Symbol for shielding gas
5.7 Symbol for welding position
5.8 Symbol for hydrogen content of deposited metal
5.9 Symbol for conditions of post-weld heat treatment
6 Rounding procedure
7 Mechanical tests
7.1 Preheating and interpass temperatures
7.2 Pass sequence
7.3 Post-weld heat treatment (PWHT) condition
8 Chemical analysis
9 Retesting
10 Technical delivery conditions
11 Examples of designations
Annex A Classification systems (informative)
Annex B Description of composition designations for electrodes in the classification system based upon tensile strength and average impact energy of 27 J (informative)
Annex C Description of types of electrode core in the classification system based upon yield strength and average impact energy of 47 J (informative)
Annex D Descriptions of types of usability characteristics in the classification system based upon tensile strength and average impact energy of 27 J (informative)
5.2 Symbol for tensile properties of all-weld metal
5.3 Symbol for impact properties of all-weld metal
5.4 Symbol for chemical composition of all-weld metal
5.5 Symbol for type of electrode core or the usability characteristics of the electrodes
5.6 Symbol for shielding gas
5.7 Symbol for welding position
5.8 Symbol for hydrogen content of deposited metal
5.9 Symbol for conditions of post-weld heat treatment
6 Rounding procedure
7 Mechanical tests
7.1 Preheating and interpass temperatures
7.2 Pass sequence
7.3 Post-weld heat treatment (PWHT) condition
8 Chemical analysis
9 Retesting
10 Technical delivery conditions
11 Examples of designations
Annex A Classification systems (informative)
Annex B Description of composition designations for electrodes in the classification system based upon tensile strength and average impact energy of 27 J (informative)
Annex C Description of types of electrode core in the classification system based upon yield strength and average impact energy of 47 J (informative)
Annex D Descriptions of types of usability characteristics in the classification system based upon tensile strength and average impact energy of 27 J (informative)
ISO 13916:1996 Welding -- Guidance on the measurement of preheating temperature, interpass temperature and preheat maintenance temperature
ISO 14175:2008 Welding consumables -- Gases and gas mixtures for fusion welding and allied processes
ISO 14344:2010 Welding consumables -- Procurement of filler materials and fluxes
ISO 13916:1996 Welding -- Guidance on the measurement of preheating temperature, interpass temperature and preheat maintenance temperature
ISO 14175:2008 Welding consumables -- Gases and gas mixtures for fusion welding and allied processes
ISO 14344:2010 Welding consumables -- Procurement of filler materials and fluxes
ISO 15792-1:2000 Welding consumables -- Test methods -- Part 1: Test methods for all-weld metal test specimens in steel, nickel and nickel alloys
ISO 3690:2012 Welding and allied processes -- Determination of hydrogen content in arc weld metal
ISO 544:2011 Welding consumables -- Technical delivery conditions for filler materials and fluxes -- Type of product, dimensions, tolerances and markings
ISO 6847:2013 Welding consumables -- Deposition of a weld metal pad for chemical analysis
ISO 6947:2011 Welding and allied processes -- Welding positions
ISO 80000-1:2009 Quantities and units -- Part 1: General