Can you get more iron in your diet by eating canned foods?!

Can you get more iron in your diet by eating canned foods?

I donate a lot of blood, and now that I'm a vegetarian my iron levels might not be where they were. I eat spinach and beans, so that helps, but I was wondering if I get any extra iron from canned foods. The cans are made of steel, which is mostly iron, and then heated to kill germs and what not. Usually when things get heated, it is easier to mix/exchange with other substances. I live out in the middle of nowhere, so most of what I eat is canned, and I don't want to take extra iron if it isn't necessary.

P.S. Don't give me any crap about processed foods not being as healthy. There is no health food store within 40 miles of me, and preservatives are not used in canning since the food is in a vacuum.

6 hours ago
UPDATE: Does anyone know where to get cast iron cookware? The only place I ever remember seeing it is with camping supplies (I think the brand name was LODGE). Are these good enough or are they somehow different?

Buy a cast iron frying pan. I think that that would add more iron to your diet than canned. Lots of canned these days are lined. For the health aspects, buy frozen (less sodium, more vitamin retention) and cook in cast iron. Also, lentil soup is great with molasses added for maximum iron. Avoid calcium with high iron meals, because it blocks absorption. Add at least 60mg of vitamin C with high iron meals to maximize absorption.