ISO 458-2:1985
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Plastics Determination of stiffness in torsion of flexible materials Part 2: Application to plasticized compounds of homopolymers and copolymers of vinyl chloride
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21-03-1985
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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