IS 7754 : Part 4 : 2024/ISO 945-4 : 2019 Microstructure of Cast Irons - Part 4 Test Method for Evaluating Nodularity in Spheroidal Graphite Cast Irons
NATIONAL FOREWORD
This Indian Standard (Part 4) (First Revision) which is identical to ISO 945-4 : 2019 'Microstructure of cast irons - Part 4: Test method for evaluating nodularity in spheroidal graphite cast irons' issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recommendation of the Metallography and Heat-Treatment Sectional Committee and approval of the Metallurgical Engineering Division Council.
This standard was first published in 1975. The Committee has decided to revise this standard to bring it in line with international practices by splitting in 4 parts as the requirements of IS 7754 : 1975 are covered in multiple ISO standards. This standard (Part 4) is being formulated to align with ISO 945-4 : 2019 under dual numbering system.
This Indian Standard is published in four parts. The other parts in this series are:
Part 1 Graphite classification by visual analysis
Part 2 Graphite classification by image analysis
Part 3 Matrix structures
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.