I was thinking about Tekkit, and thought that IC2 really didn't go very far into the possibilities of alloys. There are all kinds of possibilities, like replacing the refined iron with various types of metals, like gold, and the new alloys would be able to be added to tools or armor. For instance, since gold tools enchant better than normal, maybe a gold alloy added to a pickaxe would make the pickaxe enchant better. Also, maybe an iron alloy would increase durability. There are far more possibilities than I listed, but you get the idea. Thoughts/comments/criticism/other ideas?