NF ISO 458-2

Plastics. Determination of stiffness in torsion of flexible materials. Part 2 : application to plasticized compounds of homopolymers and copolymers of vinyl chloride.

Application of the general method in ISO 458-1 for the above mentioned plastics according to the special case of the method with an angle of deflection between 55 and 65 . The temperatures according to three characteristic values of the torsion stiffness; 300 MPa, 23 MPa and 4 MPa are to be determined for the material under test.

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