IS 15287 : Part 3 : 2024/ISO 6344-3 : 2021 Coated Abrasives - Determination and Designation of Grain Size Distribution - Part 3 Microgrit Sizes P240 to P5000
NATIONAL FOREWORD
This Indian Standard (Part 3) (Second Revision) which is identical to ISO 6344-3 : 2021 'Coated abrasives - Determination and designation of grain size distribution - Part 3: Microgrit sizes P240 to P5000' issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on recommendation of the Abrasives Sectional Committee and approval of Production and General Engineering Division Council.
This standard was first published in 2003 and subsequently revised in 2018. This revision of this standard has been undertaken to align it with latest version of ISO 6344-3.
The major changes have been incorporated in this revision are as follows:
a) Title and scope have been changed and updated due to the extension of grit designations up to P5000;
b) Relevant content of ISO 6344-1 : 1998 has been updated and transferred to this document and ISO 6344-2;
c) References to ISO 6344-1 : 1998 have been deleted;
d) The checking mineral 280 has been deleted; and
e) The grit designations P3000, P4000 and P5000 have been added.
This standard has been published in several parts. Other parts in this series are:
Part 1 Grain size distribution test
Part 2 Determination of grain size distribution of macrogrits P12 to P220
The text of ISO standard has been approved as suitable for publication as an Indian Standard without deviations. Certain conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following:
a) Wherever the words 'International Standard' appear referring to this standard, they 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.