Im willing to bet steel drill bits in a hand drill will still drill through it, it will just take longer like if you were drilling a notoriously hard wood like hickory. In practice you might need to actually go with smaller pilot holes and work up to bigger bit, rather than the average contractor method of jamming a half inch drill bit directly into some pine and forcing it through. But its not like anyone who regularly drills holes doesn't know that denser or harder materials need to be drilled with progressively increasing drill bit sizes.