One man's junk..

[C-Bag]

I'm hoping my junkyard dog self hasn't bit off more than I can chew.

I found some great scrap metal on CL yesterday on a piece of solid 1 1/2 X 1 1/2" bar and the guy had another piece that was 9"x4"X1 1/2" . Said it was possibly a die as he said there was some holes and a pattern on it. It was so rusty I was dubious, but it looked like it would be a good chunk for a project so I gave him $5 for it. Got it home and I'm not sure what it was used for but there is a hint of a pattern on it. But the main problem for me is its certainly hard! A file or hacksaw won't mark it, doh! Can I somehow anneal it so I can repurpose it or do I have a anvil/paperweight?