Question: hello what is the strongest ore

Michael Wharmby answered on 11 Jun 2011:

True titanium is the strongest metal for its weight. But corundum, which is aluminium oxide is much harder – nearly as hard as diamond (the hardest thing going). Tantalum (another element) is stronger than titanium though, but it’s a lot heavier (I don’t know strong it’s ores are though).

The question is, what do you mean by “strongest”?
Strength is measured in three ways. Compression – what happens when squash something. Tensile – what happens when you stretch something. Shear – what happens when you push something parallel to its surface, think about what happens when you push a pile of paper or books from the side.
And hardness is something different again.

So of the things above, I’d say tantalum is stronger metal (it is better in shear, compression or tensile strength than titanium). But corundum (which is an ore) is the hardest of all.