International Standard
ISO 458-1:1985
Plastics — Determination of stiffness in torsion of flexible materials — Part 1: General method
Reference number
ISO 458-1:1985
Edition 1
International Standard
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ISO 458-1:1985
Published (Edition 1, 1985)
This standard was last reviewed and confirmed in 2021. Therefore this version remains current.

ISO 458-1:1985

ISO 458-1:1985
CHF 42
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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.

General information

  •  : Published
     : 1985-03
    : International Standard confirmed [90.93]
  •  : 1
     : 4
  • ISO/TC 61/SC 2
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