What are the high-temperature properties of the mechanical seas’s spring materials are

With increasing temperature, the elastic modulus of the material decreases, leading in a decrease in the stiffness of the spring of the mechanical seal. Therefore, we must calculate the effect on the bearing capacity of the spring when its elastic modulus drops when the spring is operating at high temperature.

According to GB1239-76, when the operating temperature of the ordinary spiral spring exceeds 60℃, the shear modulus shall be corrected by the formula: Gt  equals to Kt multiples G

In G- -shear modulus at normal temperature; -—shear modulus at working temperature t; —temperature rectification coefficient：