DIN Standards Committee Welding and allied processes
DIN EN ISO 3690
Welding and allied processes - Determination of hydrogen content in arc weld metal (ISO 3690:2012); German version EN ISO 3690:2012
Schweißen und verwandte Prozesse - Bestimmung des Wasserstoffgehaltes im Lichtbogenschweißgut (ISO 3690:2012); Deutsche Fassung EN ISO 3690:2012
Overview
This standard specifies the sampling and analytical procedure for the determination of diffusible hydrogen in martensitic, bainitic, and ferritic steel weld metal arising from the welding of such steels using arc welding processes with filler metal. The techniques specified in this standard include collection of diffusible hydrogen via displacement of mercury or collection into a headspace filled with an inert gas such as argon. In the first case, the amount of hydrogen collected is determined by measuring the displaced volume; in the second case, by measuring the thermal conductivity. The International Standard ISO 3690:2012 has been prepared by the International Institute of Welding (IIW) and has been identically adopted as a European Standard. The responsible German standardization committee is Joint Working Committee NA 092-00-05 GA "NAS/NMP: Zerstörende Prüfung von Schweißverbindungen (DVS AG Q 4)" ("NAS/NMP: Destructive tests of welds (DVS AG Q 4)") at NAS.
Document: references other documents
Document: referenced in other documents
Responsible national committee
NA 092-00-05 GA - Joint working committee NAS/NMP: Destructive testing of welds (DVS AG Q 4/Q 4.1)
