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CEN - EN ISO 3690

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

active, Most Current
Organization: CEN
Publication Date: 1 September 2018
Status: active
Page Count: 30
ICS Code (Welded joints and welds): 25.160.40
scope:

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 nondiffusible 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.

Document History

EN ISO 3690
September 1, 2018
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 from the welding of such...
March 1, 2012
Welding and allied processes - Determination of hydrogen content in arc weld metal
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...
December 1, 2000
Welding and Allied Processes - Determination of Hydrogen Content in Ferritic Arc Weld Metal
A description is not available for this item.

References

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