What are steel I-beams made of?
Steel I-beams take steel directly. Trace them back and you pass 13 made things on the way to 12 raw materials.
How steel I-beams are made See it on the map
What goes straight in
From the ground: 12 raw materials
- Iron ore through steel, manganese
- Limestone through steel, quicklime
- Air through steel, argon
- Dolomite through steel, magnesium
- Water through steel, quicklime
- Manganese ore through steel, manganese
- Natural gas through steel, manganese
- Coal through steel, manganese, coke
- Quartz through steel, magnesium, metallurgical silicon
- Timber through steel, magnesium, metallurgical silicon
- Crude oil through steel, steel scrap, propane
- Sulfur through steel, manganese, sulfuric acid