Steel furnace — Factorio Production Calculator
Steel furnace is crafted in the assembling machine in 3 seconds, producing 1 per craft from 6 × Steel plate, 10 × Stone brick. At 60 per minute you need 6 assembling machines, and the chain behind it draws on 2 raw resources: iron ore, stone.
Production chain for 60 Steel furnace / minute
| Item | Per minute | Machines | Machine |
|---|---|---|---|
| Iron plate | 1,800 | 96 | Furnace |
| Stone brick | 600 | 32 | Furnace |
| Steel plate | 360 | 96 | Furnace |
| Steel furnace | 60 | 6 | Assembling machine |
Raw materials
| Resource | Per minute |
|---|---|
| Iron ore | 1,800 |
| Stone | 1,200 |
Machine counts are not rounded up. Add a little headroom in game — belt throughput and inserter speed usually mean you want 5-10% more than the exact number.
Steel furnace recipe
| Machine | Crafting time | Output | Ingredients |
|---|---|---|---|
| Assembling machine | 3 s | 1 | Steel plate × 6, Stone brick × 10 |
What the whole chain needs
60 steel furnaces per minute pulls in 3 intermediate products, and the whole tree comes to 230 machines across 2 machine types, fed by 2 raw resources. The table above already sums demand across every branch — if copper cable is used by two recipes, you see the total, not one of them.
Belt check: the busiest input here moves 1,800 per minute, which is 2 of a yellow belt's 900 per minute. Above 1.0 and you need a second belt (or a faster tier) before the machines themselves become the limit.
What uses steel furnace
No base-game recipe consumes steel furnace — it is an end product. Once you build it, the chain stops here, which makes it a good target if you only want to size the sub-factory that feeds your mall.
What steel furnace is made from
- Steel plate — 6 per craft
- Stone brick — 10 per craft
FAQ
How many assembling machines do I need for 60 steel furnaces per minute?
6 assembling machines. One at standard speed produces 10 per minute, so 60 ÷ that number is the count. The calculator above rounds nothing — add 5-10% headroom for belt and inserter losses in a real factory.
How much raw ore does steel furnace take?
At 60/min the chain consumes 1,800 iron ore per minute, 1,200 stone per minute. Those numbers are the theoretical minimum — mining productivity research and productivity modules both reduce them.
Machine counts assume bare machines at standard speed. Recipe data comes from the game's own prototypes (PlayerCalc, Factorio 2.0 base game). Not affiliated with Wube Software.