ISO 458-1:1985
Plastics; Determination of stiffness in torsion of flexible materials; Part 1 : General method
- Standard No.
- ISO 458-1:1985
- Release Date
- 1985
- Published By
- International Organization for Standardization (ISO)
- Latest
- ISO 458-1:1985
- Scope
- Specification of a general method for the determination of the stiffness in torsion at various temperatures, particularly below 0 鳦. 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.
ISO 458-1:1985 history
- 1985 ISO 458-1:1985 Plastics; Determination of stiffness in torsion of flexible materials; Part 1 : General method
