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Looking at the TZM Molybdenum I think its biggest problem is its tensile strength being fairly low at 760 MPa compared to most normal aerospokes being hardneded to about 1500-1600 MPa (CX-ray fx) and we know that even they are far from "bullet proof".

I'm not sure how close spokes are to being not strong enough. It's very unusual to break a stainless steel spoke by overloading it, even in a wheel-destroying crash.