its like really really hard
Cast iron
Yes they can. Iron doors are very hard but not hard enough.....
its not hard enough
Iron
Yes.
No, iron pyrite, unlike iron, is not malleable at all. It is a hard, inflexible rock.
- Iron is very cheap- Iron is easily processed
Iron that has some carbon is cooled very rapidly from about 1300 degrees F. to close to room temperature . The carbon atoms get in the way of the iron atoms as they form a lattice work in the cooling steel. that makes the steel very hard but very brittle. The the next step is to reheat the iron to about 440 degrees F. that way you get a reasonably hard iron that won't break when you need to use it.
It depends on the deposit. What deposit are you talking about? What measure of hardness are you after? e.g. UCS, Moh's Hardness Scale e.t.c. On moh it is 4 Brinnel hardness it is 490
old iron bottom. its not that hard you know. how did u not know that?
The fresh surface of pure iron is silver-white.
It means just what it sounds like -- something is really hard.