Stainless Heat Exchanger Question, are they 100 percent stainless? Options

[Aaron Cox]

(IMG:http://www.914world.com/bbs2/uploads/blog-1131573346.jpg)

[Mueller]

QUOTE (SLITS @ Nov 9 2005, 04:28 PM)

Foist, oh mighty magnate of the Engineering Dept at Bovine U, you purchase a magnet.....sound familiar.....here are the rules: 1.) If it sticks, it ain't stainless (unless it's cheap 504 series) 2.) If it doesn't stick, it's prolly stainless or plastic. 3.) If you hit it and it makes a "ring" sound it's prolly metal (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif) The set you have are iron pipe surrounded by a SS heat exchanger shell (So now you don't have to buy a magnet and learn how to use it).

actually magnet can be attracted to a high quality stainless...normal conditions would be for 400 series or 300 series if cold worked or machined......

if you have a known steel/iron part, you can do a comparison to see how well the magnet "snaps" to the item