Since steel caps your tools at 80, you probably go see vostaskus after a while if it's worthy. It's not. 1 vostaskus ingot requires 120 iron ingots, 60 copper ingots and a bunch of gold and silver to make a single miserable vostaskus ingot. No, for tools or weapons, you not spend vostaskus. Even steel don't make sense, because 1 half of the iron just vanish.
I suggest some changes.
Steel Ingot recipe becomes 1 iron ingot + 50 or 100 flux and it's cap becomes 100; Vostaskus becomes part of royal recipes and only royal ones.