What’s the difference between Iron That we consume and Iron that we use to make swords/Armors/Bullets

Question

What’s the difference between Iron That we consume and Iron that we use to make swords/Armors/Bullets

In: 16

Answer 1

The iron our body needs is more “pure” iron, the iron/steel in objects is mixed with other things.

Iron mixed with different amount of carbon make different types of steel (and cast iron), and then other elements added (manganese, nickle, zinc…) Make different types of alloys for different metal parts.