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Norm

ISO 3690:2018

Issue date: 2018 08 06

Welding and allied processes — Determination of hydrogen content in arc weld metal

This document specifies the sampling and analytical procedure for the determination of diffusible hydrogen in martensitic, bainitic, and ferritic steel weld metal arising...
Valid
Publisher:
International Organization for Standardization
Format:
Digital | 23 Pages
Language:
English

This document 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 material.

The techniques specified in this document 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.

NOTE Recommendations and restrictions in regard to older methods of measurement using glycerine are given in Annex B for any comparison work to these older methods.

ISO 3690:2018
2018 08 06
Welding and allied processes — Determination of hydrogen content in arc weld metal
Norm
ISO 3690:2012
2012 03 15
Welding and allied processes — Determination of hydrogen content in arc weld metal (Corrected versio...
Norm
ISO 3690:2000
2000 12 21
Welding and allied processes — Determination of hydrogen content in ferritic steel arc weld metal
Norm
ISO 3690:1977/Add 1:1983
1983 12 01
Welding — Determination of hydrogen in deposited weld metal arising from the use of covered electrod...
Norm
ISO 3690:1977/Add 2:1983
1983 09 01
Welding — Determination of hydrogen in deposited weld metal arising from the use of covered electrod...
Norm
ISO 3690:1977
1977 03 01
Welding — Determination of hydrogen in deposited weld metal arising from the use of covered electrod...
Norm
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