IS 17175 : 2020/ISO 16573 : 2015 Steel-Measurement Method for the Evaluation of Hydrogen Embrittlement Resistance of High Strength Steels

New Standard from Last Update.

NATIONAL FOREWORD

This standard which is identical with ISO 16573 : 2015 ‘Steel — Measurement method for the evaluation of hydrogen embrittlement resistance of high strength steels’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on recommendation of the Metallography and Heat Treatment Sectional Committee and approval of the Metallurgical Engineering Division Council.

The mechanical properties of high strength steels, such as tensile strength, elongation and reduction of area, would be degraded by the effect of hydrogen, known as hydrogen embrittlement, and the susceptibility of hydrogen embrittlement becomes greater with increasing the strength level of steels. This standard suggests a standardized test method for the evaluation of hydrogen embrittlement resistance of high strength steels.

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 Standards. Attention is especially drawn to the following:

a) Wherever the words ‘International Standard’ appear referring to this standard, they should be as read as ‘Indian Standard’.

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.

In reporting the results of a test or analysis made in accordance with this standard, if the final value, observed or calculated, is to be rounded off, it shall be done in accordance with IS 2 : 1960 ‘Rules for rounding off numerical values ( revised )’.