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EVS-EN ISO 3690:2012

Welding and allied processes - Determination of hydrogen content in arc weld metal (ISO 3690:2012)

General information
Withdrawn from 03.10.2018
Base Documents
ISO 3690:2012; EN ISO 3690:2012
Directives or regulations
None

Standard history

Status
Date
Type
Name
03.10.2018
Main
03.05.2012
Main
Main
EVS-EN ISO 3690:2001
This International 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 International Standard include collection of diffusible hydrogen via displacement of mercury or collection into a headspace filled with an inert gas such as argon. The amount of hydrogen collected is determined by measuring the displaced volume in the former and by, for example, thermal conductivity in the latter. The temperature for collection of diffusible hydrogen is controlled to avoid thermal activation of non-diffusible hydrogen.
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