IS 17174 : 2020/ISO 16574 : 2015 Determination of Percentage of Resolvable Pearlite in High Carbon Steel Wire Rod

New Standard from Last Update.

NATIONAL FOREWORD

This Indian Standard which is identical with ISO 16574 : 2015 ‘Determination of percentage of resolvable pearlite in high carbon steel wire rod’ 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 test method covered in this standard produces an estimate of the percentage of pearlite resolvable at 500x magnification in wire rod as a function of the cooling method after hot rolling to rod. The drawability of high-carbon pearlitic rod is influenced by the amount of resolvable pearlite present. As the percentage of resolvable pearlite increases, drawability decreases. The methods are used to check if the content of resolvable pearlite can fulfil the requirement of the wire rod with improved characteristics intended for drawing.

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.