Search:

One thing to think about is where the stress comes from - Its all about the cooling and contraction of the weld as it goes from hot hot hot to room temperature. This is effectively quite a short term...

Thermal linear expansion coefficient of Steel, ballpark 11.5 x 10-6m/(mºC). Aluminium is 22.0 x 10-6m/(mºC). The difference is therefore 0.01mm per degree, per meter of material. Lets say expected...