You might want to give your techs a heads up on the material and make sure they have appropriate drill bits available. From my own memory of university techs, they generally don't come across materials much harder to work with than mild steel as projects rarely called for anything better. The few times they did it took a hell of a lot longer to get parts made as they had to tool up especially for it.
If the teeth are properly welded in then they shouldn't come out. Typhoon 2s teeth weren't recessed into the ring, merely shaped around the curve and then welded on. Never had a failure (Although we did get guys well experienced welding hardox to that for us).
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