There aren't any.
It's just hinting that there may be new alloys in the future, I think.
You can make bronze out of copper and tin :3 I don't think that's mentioned in the book.
Steel can only be aquired by smelting any chainmail items that get dropped as loot from mobs.
The tool forge recipe is in the first book, but I guess not if the book was given to you before that update (it's in the book when I started a new world this week). Spawn a new first book from NEI (it might even have a legit crafting recipe).
Hey, hey! Does that work with all armor dropped by mobs? I was missing my RP2 Alloy Furnace but maybe no more! What about buckets and iron tools?
Also when I looked in NEI apparently any TC metal block, not just Iron, can be used for a tool forge. Makes different colored legs too. Show how rich you are with a Manuyllan tool forge.
Will that lead to yielding an extra piece of steel?
Smeltery recipes say they will melt armor, minecarts, buckets, ore, ingots, oreberries and blocks. Weapons dont seem to be in there, probably because they have wood in the recipe whereas nothing else does.
just installed latest version of TC and checked. it takes less than 6 iron to make 32 tracks(RC recipe), smelting those tracks will result in 12 iron ingots.Once again, you'll have to double check yourself. I don't intend on exploiting something like that, might ruin the game?