🔒 Unlocked by: Mass Production I (Research), Advanced Production I (Research), Mega furnace (Interplanetary shop (Space station) · Merchant III) (+2).
Iron Ingot
Produced by
| Inputs | Outputs | Base time | Building |
|---|---|---|---|
2×  Iron Ore 1×  Charcoal | 1× Iron Ingot | 48 s |  Furnace |
| 4× Iron Ore 2× Charcoal | 3× Iron Ingot | 1 min 36 s |  Advanced furnace |
2×  📦 Iron Ore 1×  📦 Charcoal | 150× Iron Ingot | 13 min 20 s |  Mega furnace |
Used in
| Inputs | Outputs | Base time | Building |
|---|---|---|---|
3× Iron Ingot 1×  Steel | 1×  Fighter Bot | 2 s |  Workbench |
2×  Glass 1× Iron Ingot | 1×  Lens | 1 min 12 s |  Electric furnace |
| 4× Glass 2× Iron Ingot | 3× Lens | 2 min 24 s |  Advanced electric furnace |
100× Iron Ingot 1×  Empty Package | 1×  📦 Iron Ingot | 30 s |  Packager |
2× Iron Ingot 2×  Copper Ingot | 1× Steel | 1 min 12 s | Electric furnace |
| 4× Iron Ingot 4× Copper Ingot | 3× Steel | 2 min 24 s | Advanced electric furnace |
4×  Modular Brick 1× Iron Ingot | 1×  Collector Bot | 2 s | Workbench |