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ISO 458-1:1985

Current Revision

Plastics - Determination of stiffness in torsion of flexible materials - Part 1 : General method

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Specification of a general method for the determination of the stiffness in torsion at various temperatures, particularly below 0 °C. An observation of torque and angle of deflection is made after an arbitrarily fixed time of load application, using the specified testing apparatus. This procedure is employed at a single temperature or at selected temperature intervals over a range specified for the material to be tested. The stiffness in torsion is expressed as the apparent torsional modulus of elasticity for each temperatur.


SDO ISO: International Organization for Standardization
Document Number ISO 458
Publication Date Not Available
Language en - English
Page Count
Revision Level
Supercedes
Committee ISO TC 61/SC 2/WG 19
Publish Date Document Id Type View
Not Available ISO 458-1:1985 Revision