ISO 458-1:1985 PDF
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Plastics — Determination of stiffness in torsion of flexible materials — Part 1: General method
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.
| Edition | 1985 |
|---|---|
| Standard Part No | 1 |
| Published Date | 1985 |
| Published By | International Standardization Organisation |
| Page Count | 4 |
