[harshreality]

No; roughly, yes. Based on the crystal structure of the metal, fatigue works differently.

> The fatigue limit or endurance limit is the stress level below which an infinite number of loading cycles can be applied to a material without causing fatigue failure.[1] Some metals such as ferrous alloys and titanium alloys have a distinct limit,[2] whereas others such as aluminium and copper do not and will eventually fail even from small stress amplitudes.

https://en.wikipedia.org/wiki/Fatigue_limit