How do you mean "melted". The germanium is in a can where you can't see it.
But they can be more easily damaged than a silicon transistor with too much soldering heat.
My confusion is caused by the fact that a material that melts at over 900C can be easily damaged by soldering. My understanding of soldering damage is that the junction melts, hence, my use of the term "melted".
Maybe someone can explain how a Germanium device is damaged by soldering.
Mike.