ISO 3690:2012

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

Publication date:   Mar 15, 2012

95.99 Withdrawal of Standard   Aug 6, 2018

General information

95.99 Withdrawal of Standard   Aug 6, 2018

ISO

IIW International Institute of Welding

International Standard

25.160.40   Welded joints and welds

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Scope

ISO 3690:2011 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 ISO 3690:2011 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.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 3690:2000

NOW

WITHDRAWN
ISO 3690:2012
95.99 Withdrawal of Standard
Aug 6, 2018

REVISED BY

PUBLISHED
ISO 3690:2018