Reaffirmed 2023

NATIONAL FOREWORD

This Indian standard (Part 4) (First Revision) which is identical to ISO 9606 - 4 : 1999 ‘Approval testing of welders — Fusion welding — Part 4: Nickel and nickel alloys’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on recommendation of the Welding General and its Applications Sectional Committee and approval of the Metallurgical Engineering Division Council.

This standard was originally published in 1974 which was only dealing with steel. The first revision of this standard has been undertaken to include other materials also and align it with the latest version of ISO 9606-4 : 1999.

This Indian Standard is published in five parts. The other parts in this series are:

Part 1 Steels

Part 2 Aluminium and aluminium alloys

Part 3 Copper and copper alloys

Part 5 Titanium and titanium alloys

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 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.