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ISO 458-1:1985

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

Mar 14, 1985

General information

90.92     Nov 20, 2024

ISO

ISO/TC 61/SC 2

International Standard

83.080.01  

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Published

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Scope

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.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO/R 458:1965

NOW

PUBLISHED
ISO 458-1:1985
90.92 Standard to be revised
Nov 20, 2024

REVISED BY

PROJECT
ISO/CD 458-1

National adoptions

SRPS G.S2.630:1991  
ISS

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

95.99   Withdrawal of Standard

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