Blast Furnace
Ore and coal cost (half the normal coal at the Blast Furnace) plus the furnace fee, against selling the bar on the Grand Exchange with the 2% tax already applied.
Filters
Couldn't confirm the official fee formula by Smithing level — the value below is an estimate. Adjust it for your situation (the fee drops a lot near level 60+).
| Bar | Confidence | Level | Ore + coal | Furnace fee | Revenue | Profit |
|---|---|---|---|---|---|---|
 Runite bar | 100 | Smithing 85 | 10,853 | 30 | 11,993 | 1,110 |
 Adamantite bar | 100 | Smithing 70 | 995 | 30 | 1,802 | 777 |
 Mithril bar | 100 | Smithing 50 | 453 | 30 | 929 | 446 |
 Steel bar | 100 | Smithing 30 | 219 | 30 | 548 | 299 |