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Norm

ISO 815-2:2008

Issue date: 2008 01 28

Rubber, vulcanized or thermoplastic — Determination of compression set — Part 2: At low temperatures

ISO 815-2:2008 specifies a method for the determination of the compression set characteristics of vulcanized and thermoplastic rubbers at low temperatures. The method is ...
Withdrawn: 2014 11 05
Publisher:
International Organization for Standardization
Format:
Digital | 8 Pages
Language:
English
Currently valid:

ISO 815-2:2008 specifies a method for the determination of the compression set characteristics of vulcanized and thermoplastic rubbers at low temperatures.

The method is intended to measure the ability of rubbers of hardness within the range 10 IRHD to 95 IRHD to retain their elastic properties at specified temperatures after prolonged compression at constant strain (normally 25 %) under one of the alternative sets of conditions described. For rubber of nominal hardness 80 IRHD and above, a lower compression strain is used: 15 % for a nominal hardness from 80 IRHD to 89 IRHD and 10 % for a nominal hardness from 90 IRHD to 95 IRHD.

NOTE When rubber is held under compression, physical or chemical changes can occur that prevent the rubber returning to its original dimensions after release of the deforming force. The result is a set the magnitude of which depends on the time and temperature of compression as well as on the time and temperature of recovery. At low temperatures, changes resulting from the effects of glass hardening or crystallization become predominant and, since these effects are reversed by raising the temperature, it is necessary for all measurements to be undertaken at the test temperature.

ISO 815-2:2019
2019 11 26
Rubber, vulcanized or thermoplastic — Determination of compression set — Part 2: At low temperatures...
Norm
ISO 815-2:2014
2014 11 05
Rubber, vulcanized or thermoplastic — Determination of compression set — Part 2: At low temperatures...
Norm
ISO 815-2:2008
2008 01 28
Rubber, vulcanized or thermoplastic — Determination of compression set — Part 2: At low temperatures...
Norm
ISO 815:1991/Cor 1:1993
1993 04 01
Rubber, vulcanized or thermoplastic — Determination of compression set at ambient, elevated or low t...
Norm
ISO 815:1991
1991 10 31
Rubber, vulcanized or thermoplastic — Determination of compression set at ambient, elevated or low t...
Norm
ISO 1653:1975
1975 03 01
Vulcanized rubbers — Determination of compression set under constant deflection at low temperatures
Norm
ISO 815:1972
1972 10 01
Vulcanized rubbers — Determination of compression set under constant deflection at normal and high t...
Norm
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Norm
ISO 815-2:2014
Issue date : 2014 11 05
Rubber, vulcanized or thermoplastic — Determination of compression set — Part 2: At low temperatures