"bw" wrote in message
...

"Stratis" wrote in message
...
I've acquired three 50 gallon steel drums which I think were used in hot
water systems.

I need to know whether or not they are stainless steel (as opposed to
non-stainless). How can I test them?

Stratis.

A magnet will not stick to food grade stainless.


Which is typically either 304 or 316 stainless. Both are lightly magnetic
when work hardened, like in having been heavily spun and not annealed.

Harold