Extract iron ore
Remove impurities from the ore
Smelt the ore in a blast furnace to produce pig iron
Refine pig iron to reduce carbon and impurities
Add controlled amounts of carbon and alloying elements
Melt and mix the metal in a furnace or converter
Cast the molten steel into slabs, billets, or blooms
Roll, forge, or shape the steel into final products
Heat treat or finish the steel as needed