Steel

Steel is the best alloy of the mod: one step below diamond on every criterion. In real life it is iron with a little carbon; here, coal is the carbon.

Making it

It is melted in the foundry, with a heat 3 fuel (a coal block or a lava bucket): see the recipe.

Tools and weapons

All of them mine at iron level. Shapes and amounts: the recipes.

  Steel Iron (reference)
Durability 850 250
Mining speed 7 6
Enchantability 9 14
Sword damage 6.5 6
Sword attack speed 1.6 1.6

Armor

It protects almost like diamond and has toughness.

Piece Protection Durability
Helmet 3 297
Chestplate 7 432
Leggings 5 405
Boots 3 351
Full set 18 1,485

Toughness: 1 per piece. Enchantability: 9.

  Steel Iron Diamond
Protection (full set) 18 15 20
Durability (full set) 1,485 825 1,815
Toughness (per piece) 1 0 2

Repair it at an anvil with a steel ingot.