BS ISO 812:2017
Current
The latest, up-to-date edition.
Rubber, vulcanized or thermoplastic. Determination of low-temperature brittleness
Hardcopy , PDF
English
09-18-2017
Important note : All end users must be registered with an Account prior to user licenses being assigned.| Committee |
PRI/22
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| DevelopmentNote |
Supersedes BS 903-A25(1992) & 05/30133100 DC. (03/2009)
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| DocumentType |
Standard
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| Pages |
24
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| PublisherName |
British Standards Institution
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| Status |
Current
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| Supersedes |
This document specifies a method for determining the lowest temperature at which rubber materials do not exhibit brittle failure or the temperature at which half of the test pieces used in a test fail when impacted under specified conditions.
The temperatures thus determined do not necessarily relate to the lowest temperature at which the material can be used since the brittleness will be affected by the conditions of test and especially by the rate of impact. Data obtained by this method are, therefore, intended to be used to predict the behaviour of rubbers at low temperatures only in applications in which the conditions of deformation are similar to those specified in the test.
Three procedures are described:
procedure A, in which the brittleness temperature is determined;
procedure B, in which the brittleness temperature for 50% failure is determined;
procedure C, in which the test piece is impacted at a specified temperature.
Procedure C is used in the classification of rubber materials and for specification purposes.
NOTE A similar test for rubber-coated fabrics is described in ISO4646 .
| Standards | Relationship |
| ISO 812:2017 | Identical |
| BS 903-0:2012 | Physical testing of rubber General |
| DEFSTAN 02-337(PT1)/2(2014) : 2014 | REQUIREMENTS FOR ELASTOMERIC TOROIDAL SEALING RINGS ('O'-RINGS) - PART 1: GENERAL AND SURFACE FINISH STANDARDS RELATIVE TO MANUFACTURER |
| ISO 23529:2016 | Rubber General procedures for preparing and conditioning test pieces for physical test methods |
| ISO 4646:1989 | Rubber- or plastics-coated fabrics — Low-temperature impact test |
| ISO 19983:2017 | Rubber — Determination of precision of test methods |
| ISO 18899:2013 | Rubber — Guide to the calibration of test equipment |
| ISO/TR 9272:2005 | Rubber and rubber products Determination of precision for test method standards |
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