1 This standard establishes the method for determining the apparent modulus1) of tangential elasticity G of plastic materials within a wide temperature range. 2 The method is particularly useful for determining the stiffness characteristics of plastic materials that are flexible at temperatures below 0 °C. 3 The variation of the apparent shear modulus of elasticity with temperature is important in plastics applications.
UNI 5635-1974 history
1974UNI 5635-1974 Plastic material testing. Determination of the apparent coefficient of tangent elasticity as a function of temperature