What kind of magnet can I put on my wall to hold up a poster sized piece of stainless steel?

I'm working on an art project. I have this thin sheet of metal I've painted on.... and I want to screw four magnets onto my wall to hold it up from the back so you won't see the hardware from the front. Any ideas?

It all depends on what type of stainless it is. some is magnetic,some is nonmagnetic.To find out what type you have,touch it with magnet.If it sticks it's a low grade alloy,if not,it's non magnetic.I have been a heattreater of metals for 14yrs.Depending on the weight of the steel,if it's not too heavy,you can use adhesive backed velcro strips. attach sticky side of one strip to wall,sticky side of another strip to steel.best if done in 4 places, one on each side of square.

Stainless Steel is non magnetic. You may have to solder a magnetic metal to the back, and go from there.

double faced foam tape, it'll hold it, sticks like sh#$ to a blanket!

Stainless steel is non-magnetic.

http://www.uaeglobal.com/

go to a paint store..magnetic paint.give it a few coats. and then paint 4 corners on the wall.no screws needed,,,,,,

I will agree with tczwilkins. Good answer.

stainless steel dont stick to magnets, I would get some of those stickyhook things ya put on the back of your picture and hang on the wall instead cause magnets will not stick to stainless steel..

Go to the craft store, you can buy sheets of sticky back magnet. Either use a whole sheet or stick pieces in the corner. Or for a cheap version, use the free magnets you get sent from pizza places etc and glue them to the back. Then you will need a surface it will mount to - easier to do.