This standard ( Part XVII) prescribes the method for determination of tear resistance of the usual grades of soft vulcanized rubber employing an angular test piece. This method is not suitable for the testing of the material ordinarily classed as hard rubber.
IS 3400 Pt.17-1974 history
1974IS 3400 Pt.17-1974 Test Methods for Vulcanized Rubber Part X Tear Strength—Angular Test Pieces