There are no really good solutions to this choice, mainly because the use of metal is a bit more complicated than the understanding that the causual gamer is prone to have.
Iron ore: What you find in the underground, containing enough iron to be aviable source of iron.
Iron: The metal and the chemical element Fe, used in a lot of products.
Iron: The common name for products based on iron in some form, usually strengthened with a bit of carbon.
Cast Iron or Pig Iron: Used for casting products and has a high amount of carbon, but is brittle.
Steel: Is what is used in most standard production, has a lower amount of carbon and is easy to bend, shape, weld and mill.
Compacted iron: Some alloys of iron (mixes of iron and say titanium and vanadium) have a very high melting point at normal pressure, but putting a poweder in a cast under pressure helps make it bind at a lower temperature. This is called compacting or sintering.
Compacted iron would not be found in nature but is important in modern industry.
Iron ore: What you find in the underground, containing enough iron to be aviable source of iron.
Iron: The metal and the chemical element Fe, used in a lot of products.
Iron: The common name for products based on iron in some form, usually strengthened with a bit of carbon.
Cast Iron or Pig Iron: Used for casting products and has a high amount of carbon, but is brittle.
Steel: Is what is used in most standard production, has a lower amount of carbon and is easy to bend, shape, weld and mill.
Compacted iron: Some alloys of iron (mixes of iron and say titanium and vanadium) have a very high melting point at normal pressure, but putting a poweder in a cast under pressure helps make it bind at a lower temperature. This is called compacting or sintering.
Compacted iron would not be found in nature but is important in modern industry.