IS 3400 : Part 10 : Sec 1 : 2022/ISO 815-1 : 2019 Methods of Test for Rubber, Vulcanized or Thermoplastic - Part 10 Compression Set - Section 1 at Ambient or Elevated Temperatures
NATIONAL FOREWORD
This draft Indian Standard (Part 10/Sec 1) (Third revision) which is identical with ISO 815-1 : 2019 'Rubber, vulcanized or thermoplastic - Determination of compression set - Part 1 : At ambient or elevated temperatures' issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on recommendation(s) of the Methods of Test for Rubber and Rubber Products Sectional Committee and approval of the Petroleum, Coal and Related Products Division Council.
This test method for determining the compression set characteristics of vulcanized rubbers is intended to measure the ability of rubber of hardness to retain their elastic properties after prolonged compression at constant strain. This Indian Standard was first published in 1969 and subsequently revised in 1977. Fist revision of standard was based on ISO 815. Since ISO 815 was revised in 2014 and split in to two parts, the Committee decided to align IS 3400 (Part 10) with the latest International Standards available on the subject. As this Indian Standard was already part of series of standards, it was further decided to publish the two different parts of ISO 815 as two sections of standard.
The other section in this series is:
Sec 2 At low temperatures
The third revision of this standard has been carried out to align it with latest version of ISO 815-1 : 2019 under dual numbering system. The Committee also decided to modify the common title of all the Indian Standards under IS 3400 series as 'Methods of test for rubber, vulcanized or thermoplastics' for the uniformity in the title in line with the ISO Standards.
The main changes in this revision are:
- title of the standard has been modified
- normative references have been updated in Clause 2.
- a new precision statement has been added in Annex A.
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'.
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.