Resources
Cobalt Alloy
The blue alloy of chrome steel, cobalt ore and kryptonite, blast furnace level 3.

Cobalt alloy combines 1 t of chrome steel, 1 t of cobalt ore and 1 t of kryptonite. You can only take the furnace to level 3 with the research Cobalt Alloy.
Production
| Value | |
|---|---|
| blast furnace from level | 3 |
| output at full load | 15 t per hour |
| color in the furnace | cobalt blue glow, ice blue melt |
| sale value | 3,743 $ per ton |
A blast furnace only ever smelts one recipe at a time. You choose the recipe in the furnace window. It draws its ingredients from the mines first, then from the warehouses. If an ingredient is missing, it runs empty.
What you need it for
- high-rises at levels 2 and 3
- fusion power plant level 3
- districts from the eighth on
- research lab level 3, firefighting helicopters
