规定了在恒定应力增长率条件下，在高温下测定耐火制品的方法。ISO 5014中给出了在环境温度下测定相同性能的方法。断裂模量是破坏点的弯矩与阻力矩（截面模量）的比值。它是由一个方程计算出来的，这个方程是从弹性材料的胡克定律推导出来的。

Specifies a method for the determination of the refractory products at elevated temperatures, under conditions of a constant rate of increase of stress. A method for determination of the same property at ambient temperature is given in ISO 5014. The modulus of rupture is the ratio of the bending moment at the point of failure to the moment of resistance (the section modulus). It is calculated from an equation which is derived from Hooke' s Law for elastic materials.