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.
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
4.1 General
4.2 Compulsory and optional sections
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 covering
5.6 Symbol for condition of post-weld heat treatment of all-weld metal
5.7 Symbol for electrode efficiency and type of current
5.8 Symbol for welding position
5.9 Symbol for diffusible hydrogen content of deposited metal
5.10 Mechanical property and composition requirements
6 Mechanical property tests
6.1 General
6.2 Preheating and interpass temperatures
6.3 Pass sequence
7 Chemical analysis
8 Rounding procedure
9 Retests
10 Technical delivery conditions
11 Examples of designation
Annex A Classification systems (informative)
Annex B Description of types of electrode covering — Classification by yield strength and 47 J impact energy (informative)
Annex C Description of types of electrode covering — Classification by tensile strength and 27 J impact energy (informative)
Annex D Notes on diffusible hydrogen (informative)
Annex E Description of chemical composition symbols — Classification by yield strength and 47 J impact energy (informative)
Annex F Description of chemical composition symbols — Classification by tensile strength and 27 J impact energy (informative)
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 2401:2018 Welding consumables -- Covered electrodes -- Determination of the efficiency, metal recovery and deposition coefficient
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 2401:2018 Welding consumables -- Covered electrodes -- Determination of the efficiency, metal recovery and deposition coefficient
ISO 2560:2009 Welding consumables -- Covered electrodes for manual metal arc welding of non-alloy and fine grain steels -- Classification
ISO 3690:2018 Welding and allied processes -- Determination of hydrogen content in arc weld metal
ISO 544:2017 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