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ISO 458-1:1985

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

Standard Details

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.

General Information

Status : Published
Standard Type: Main
Document No: ISO 458-1:1985
Document Year: 1985
Pages: 4
Edition: 1

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ISO 458-1:1985
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