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BS ISO 1432:2021

BS ISO 1432:2021

$142.49

Rubber, vulcanized or thermoplastic. Determination of low-temperature stiffening (Gehman test)

Published By Publication Date Number of Pages
BSI 2021 24
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This document specifies a static procedure, known as the Gehman test, for determining the relative stiffness characteristics of vulcanized or thermoplastic rubbers over a temperature range from room temperature to approximately ?120 °C.

PDF Catalog

PDF Pages PDF Title
2 undefined
6 Foreword
7 1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
9 6 Calibration
7 Test piece
7.1 Preparation of test piece
10 7.2 Conditioning of test piece
8 Procedure
8.1 Mounting of test piece
8.2 Stiffness measurements in liquid media
11 8.3 Stiffness measurements in gaseous media
8.3.1 General
8.3.2 Measurements
8.4 Crystallization
9 Number of tests
10 Expression of results
10.1 Torsional modulus
12 10.2 Relative modulus
13 10.3 Apparent torsional modulus of rigidity
14 11 Precision
12 Test report
16 Annex A (normative) Calibration schedule
19 Annex B (informative) Precision
22 Bibliography

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BS ISO 1432:2021
$142.49