The high temperature structural strength of firebrick is the function of bearing mechanical load without damage under high temperature. The following detailed introduction: refractory brick load softening temperature, in the high temperature text constant load effect, the corresponding temperature of different levels of deformation, known as load softening temperature or load softening point for short.
         High temperature volume stability of firebrick. The function of keeping the volume stable at high temperature is called high temperature volume stability. In engineering, the high-temperature volume stability and high-temperature mechanical strength of refractory brick and other products are generally indicated by the change rate of material volume or the change rate of burning line under the condition of no load.
         The high temperature mechanical strength is the critical stress which can resist the effect of external force without damage at high temperature. It is usually indicated by high temperature compressive strength, high temperature flexural strength, high temperature shear strength and high temperature torsional strength. Thermal shock resistance.
         Thermal shock resistance is the ability of refractory bricks and other products to resist rapid changes in temperature without damage. Also known as the resistance to rapid cold and heat, with the rapid change of temperature, it will lead to the internal thermal stress of refractories. When the thermal stress exceeds the critical strength of refractories, refractories will be damaged. Ordinary refractories with small linear shrinkage coefficient and high thermal conductivity. It has good thermal shock resistance.