ISO 458-1-1985 塑料 柔性材料扭曲刚度的测定 第1部分:一般方法

标准号：ISO 458-1-1985
中文标准名称：塑料 柔性材料扭曲刚度的测定 第1部分:一般方法
英文标准名称：Plastics; Determination of stiffness in torsion of flexible materials; Part 1 : General method
标准类型：G31
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：G31
国际标准分类号：83.080.01
适用范围：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.