Cast iron
Yes they can. Iron doors are very hard but not hard enough.....
Yes.
Iron
its not hard enough
No, iron pyrite, unlike iron, is not malleable at all. It is a hard, inflexible rock.
No, soft iron cannot be made from hard iron. Soft iron is a specific type of iron that has different properties compared to hard iron, such as higher magnetic permeability and lower magnetic coercivity. These properties are inherent to the material and cannot be changed by simply altering the hardness of the iron.
- Iron is very cheap- Iron is easily processed
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.