Making steel
Facts checked 1 Nov 2026
Iron becomes steel with the smallest of additions: a little Graphite and a pinch of the Calcium you made from salt. This is the last refining job of the Training Ground.
The recipe
The process is called Steel Alloying. For every 994 kg of Iron, 5 kg of Graphite, and 1 kg of Calcium, it makes 1,000 kg of Steel.
- In: About 547 tonnes of Iron, 2.8 tonnes of Graphite, and 0.55 tonnes of Calcium.
- Out: 550 tonnes of Steel: enough for the warehouse's 350 tonnes of Steel Beams and 200 tonnes of Steel Sheets.
- Time: About two hours.
Buy a little Graphite
Graphite is the only raw material the Training Ground asks you to buy. You need only about 3 tonnes. Buy it at Academy Market 1 with Market Buy, sent to your crew's warehouse, just as you bought your acid in Buying sulfuric acid.
Make your steel
- Check your warehouse holds the Iron, Graphite, and Calcium.
- On an Academy refinery, click Refine Materials and choose Steel Alloying, with your crew's warehouse for the inputs and outputs.
- Set the amount, check the time, click Lease & Begin, and approve.
- When it's done, click Finish.