Too much iron but no diamonds? Carbon Steel Mod 1.8.9 adds in a new ingot which is better than iron and just slightly worse than diamonds. All you need is iron, sulfur (from gunpowder), manganese (from pumpkin seeds), and charcoal.
Recommend that you should install Just Enough Items (for mods using Forge) or Roughly Enough Items (for mods using Fabric) to view the full recipes included in this mod
How to install Carbon Steel Mod 1.8.9
Download Links for Carbon Steel Mod 1.8.9
For Minecraft 1.8.9