IS 11802 : 2024/ISO 3690 : 2018 Welding and Allied Processes - Determination of Hydrogen Content in Arc Weld Metal
NATIONAL FOREWORD
This Indian Standard (First Revision) which is identical to ISO 3690 : 2018 'Welding and allied processes - Determination of hydrogen content in arc weld metal' issued by the International Organization for Standardization (ISO), was adopted by the Bureau of Indian Standards on the recommendation of the Welding General and its Applications Sectional Committee and approval of the Metallurgical Engineering Division Council.
This document outlines the sampling and analytical procedure for determining the diffusible hydrogen content in weld metal produced from martensitic, bainitic, and ferritic steels using arc welding processes with filler material. Techniques specified include collecting diffusible hydrogen through displacement of mercury or capturing it in a headspace filled with an inert gas like argon.
This standard was first published in 1986. The revision of this standard has been undertaken to align it with ISO 3690 : 2018 under dual numbering system to harmonize it with the latest developments that have taken place at international level.
The text of ISO standard has been approved as suitable for publication as an Indian Standard without deviations. Certain terminologies and conventions are, however, not identical with those used in Indian Standard. Attention is especially drawn to the following:
a) Wherever the words 'International Standard' appear referring to this standard, it should be read as 'Indian Standard'; and
b) Comma (,) has been used as a decimal marker, while in Indian Standards, the current practice is to use a point (.) as the decimal marker.