ISO 7267-1:2008 PDF

Scope: This part of ISO 7267 specifies a method for the determination of the apparent hardness, expressed in International Rubber Hardness Degrees (IRHD), of vulcanized- or thermoplastic-rubber roller covers. The method is similar in principle to the methods used for the determination of the hardness of rubber in ISO 48 in that it consists essentially of measuring the depth of penetration of a spherical indentor operating under a specified force. The apparatus used is similar to that described in ISO 48, having a base specifically designed for application to roller covers and similar curved surfaces. NOTE With some rollers, there may be significant variation in the thickness of the rubber over the surface of the roller, which could affect the measured apparent hardness.

ISO 7267-1:2008 Referenced Document

ISO 23529 Rubber - General procedures for preparing and conditioning test pieces for physical test methods*， 2016-11-01 Update
ISO 48:2007 Rubber, vulcanized or thermoplastic - Determination of hardness (hardness between 10 IRHD and 100 IRHD)

2017 ISO 7267-1:2017 Rubber-covered rollers — Determination of apparent hardness — Part 1: IRHD method
2008 ISO 7267-1:2008 Rubber-covered rollers - Determination of apparent hardness - Part 1: IRHD method
1997 ISO 7267-1:1997 Rubber-covered rollers - Determination of apparent hardness - Part 1: IRHD method
1986 ISO 7267-1:1986 Rubber-covered rollers; Determination of apparent hardness; Part 1 : IRHD method