BS EN ISO 3690:2018
$142.49
Welding and allied processes. Determination of hydrogen content in arc weld metal
| Published By | Publication Date | Number of Pages |
| BSI | 2018 | 30 |
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.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 4 | European foreword |
| 6 | Foreword |
| 7 | 1 Scope 2 Normative references 3 Terms and definitions 4 Principle |
| 8 | 5 Test procedures 5.1 Production of weld specimens 5.1.1 Summary 5.1.2 Welding fixture |
| 9 | 5.1.3 Test piece assemblies |
| 10 | 5.1.4 Welding and test piece storage |
| 11 | 5.1.5 Recording of data 5.2 Welding procedures for the production of weld specimens 5.2.1 Summary |
| 12 | 5.2.2 Manual metal arc welding |
| 13 | 5.2.3 Submerged arc welding |
| 16 | 5.2.4 Tubular cored electrode with or without gas shield and wire electrode with gas shield |
| 17 | 5.3 Measurement of hydrogen in the test weld 5.3.1 General |
| 18 | 5.3.2 Displacement of mercury method |
| 20 | 5.3.3 Thermal conductivity detector method |
| 22 | 5.3.4 Calibration 5.3.5 Linearity |
| 23 | 5.3.6 Calculation and expression of results |
| 24 | 5.3.7 Reporting of results 5.4 Measurement of total hydrogen content in the weld metal — Rapid methods 5.5 Rounding procedure |
| 26 | Annex A (informative) Recommendations and restrictions in regard to older methods of measurement using mercury |
| 27 | Annex B (informative) Recommendations and restrictions in regard to older methods of measurement using glycerine |
| 28 | Annex C (informative) Accuracy and reproducibility |
| 29 | Bibliography |
Related products
-
BS EN ISO 3690:2018 – TC:2020 Edition
Tracked Changes. Welding and allied processes. Determination of hydrogen content in arc weld metal Published…
