BS ISO 815-2:2019 - Rubber, vulcanized or thermoplastic. Determination of compression set. At low temperatures
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BS ISO 815-2:2019

Rubber, vulcanized or thermoplastic. Determination of compression set. At low temperatures

Status : Current   Published : November 2019



This document specifies two methods for the determination of the compression set characteristics of vulcanized and thermoplastic rubbers at low temperatures.

Method 1 derives from the methodology used in ISO 815-1. Method 2 uses a specified testing device, allowing to measure and record the test piece thickness during recovery. Due to the load applied during recovery in method 2, no correlation can be established between the results given by both methods.


When rubber is held under compression, physical or chemical changes that prevent the rubber returning to its original dimensions after release of the deforming force can occur. The result is a set, where the magnitude of which depends on the time and temperature of compression as well as on the time, temperature, and conditions 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, therefore, the measurements are always taken at the test temperature.

Standard NumberBS ISO 815-2:2019
TitleRubber, vulcanized or thermoplastic. Determination of compression set. At low temperatures
Publication Date28 November 2019
Normative References(Required to achieve compliance to this standard)ISO 18899:2013, ISO 23529:2016
Informative References(Provided for Information)ISO 4287, ISO/TR 9272, ISO 19983
ReplacesBS ISO 815-2:2014
International RelationshipsISO 815-2:2019
Draft Superseded By18/30374435 DC
DescriptorsElasticity, Vulcanized rubber, Specimen preparation, Thermoplastic polymers, Test equipment, Test specimens, Mechanical testing, Rubber, Compression testing, Compression set, Low temperatures, Temperature
Title in FrenchCaoutchouc vulcanisé ou thermoplastique. Détermination de la déformation rémanente après compression À basses températures
ISBN978 0 539 00206 5
File Size2.785 MB

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