Originally Posted by
phil alvirez
terrific input, guys.
considering that metals expand with heath, when we should torque the bolts? when hot or when cold?
especially as we are coupling parts of aluminum (magnesium) and steel, with different expansion coefficient.
i have not seen any reference to this.
thanks
Nearly all torque ratings for assembly of parts are listed for cold conditions. "Hot torquing" is required for critical applications in some industrial verticals. And the hot torque spec (value) will typically be lower than the cold torque spec (value).