BS ISO 7743 ubber, vulcanized or thermoplastic. Determination of compression stress-strain properties

BS ISO 7743:2008

Rubber, vulcanized or thermoplastic. Determination of compression stress-strain properties

Status : Revised, Withdrawn   Published : July 2008 Replaced By : BS ISO 7743:2011

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BS ISO 7743:2008 Rubber, vulcanized or thermoplastic. Determination of compression stress-strain properties

BS ISO 7743 is the standard that specifies methods for the determination of the compression stress-strain properties of vulcanized or thermoplastic rubber using a standard test piece, a product or a part of a product.
Three methods are given, using:

  • A standard test piece with the metal plates lubricated
  • A standard test piece with the metal plates bonded to the test piece
  • A product or a part of a product with the metal plates lubricated.

The three methods do not give the same results. With lubricated test pieces, the results are dependent only on the modulus of the rubber and are independent of the test piece shape, provided that complete slip conditions are achieved.

Effective lubrication is sometimes difficult to achieve, however, and it is prudent to inspect the variance in the test results from replicate test pieces for indications of erratic slip conditions. With bonded test pieces, the results are dependent on both the modulus of the rubber and the test piece shape.

The dependence on test piece shape is strong and consequently the results will be markedly different from those obtained with lubricated test pieces. For products, the result is dependent on the shape, but as tests on products are mainly comparative this is acceptable.

For well-specified product shapes, such as O rings, the result may be correlated to the hardness value.

The methods are not suitable for materials that exhibit high set.




Standard NumberBS ISO 7743:2008
TitleRubber, vulcanized or thermoplastic. Determination of compression stress-strain properties
StatusRevised, Withdrawn
Publication Date31 July 2008
Withdrawn Date30 November 2011
Normative References(Required to achieve compliance to this standard)ISO 4287, ISO 5893, ISO 18899:2004, ISO 23529, ISO 18899
Informative References(Provided for Information)No other standards are informatively referenced
Replaced ByBS ISO 7743:2011
ReplacesBS ISO 7743:2004
International RelationshipsISO 7743:2008
Draft Superseded By07/30162647 DC
DescriptorsRubber, Vulcanized rubber, Thermoplastic polymers, Natural rubber, Synthetic rubber, Compression testing, Stress, Strain, Mechanical testing, Test specimens, Plastics and rubber technology
ICS83.060
Title in FrenchCaoutchouc vulcanisé ou thermoplastique. Détermination des propriétés de contrainte/déformation en compression
Title in GermanElastomere oder thermoplastische Elastomere. Bestimmung des Druckverformungs-Verhaltens
CommitteePRI/22
ISBN978 0 580 58455 8
PublisherBSI
FormatA4
DeliveryNo
Pages26
File Size303.6 KB
Price£182.00


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