Does T-88 cure to a flexible state or a brittle state?

How much flexing can it take when cured?

I know it is poor craftsmanship to glue different materials together,
but how well would it handle gluing two layers of different material
together, with the materials having different rates of expansion. For
example, plastic glued to aluminum, two different thicknesses of
aluminum glued together, fiberboard and spruce, etc.

Thanks for any info.