Magnetic Stainless Steel?

Centimeter · Post by **Centimeter** » Sun Mar 30, 2008 7:46 pm

I bought a 38qt Stainless Steel stock pot that is supposedly made from 18/10 stainless steel. I put a magnet to it and found, much to my surprise, that it was very magnetic.

I have other 18/10 pots and they are virtually non-magnetic. Was I scammed?

Gimp · Post by **Gimp** » Sun Mar 30, 2008 7:52 pm

Sounds like you were scammed.

As-Ol-Joe · Post by **As-Ol-Joe** » Sun Mar 30, 2008 8:02 pm

Is all of it magnetic? Mine is magnetic on the outside bottom of the pot. The sides are not and the inside bottom is very little.

Centimeter · Post by **Centimeter** » Sun Mar 30, 2008 8:06 pm

The whole shebang, including the lid is magnetic. Almost as much as my refrigerator.

Gimp · Post by **Gimp** » Sun Mar 30, 2008 8:12 pm

Take it back...

As-Ol-Joe · Post by **As-Ol-Joe** » Sun Mar 30, 2008 8:24 pm

Is it marked 18/10? If so, someone is sell inferior stuff.

What Gimp said.

Post by **Uncle Jesse** » Sun Mar 30, 2008 8:26 pm

take it in and show them with the magnet if they try to give you any grief about it.

by the way I changed your username as requested, hope you notice

Froggy · Post by **Froggy** » Mon Mar 31, 2008 1:17 am

I don't know what 18/10 stainless steel is in our language, but 316 stainless can take on a magnetic effect when being formed/rolled.

goose eye · Post by **goose eye** » Mon Mar 31, 2008 2:52 am

i use to thunk the same thang bout magnets an checkin with em but
some smart folks on here said it was bout heatin an bendin. aint smart enuff to hunt it out but it on here somewhare

so im tole

Post by **HookLine** » Mon Mar 31, 2008 3:58 am

From this site:

Stainless steel and Magnetism
Magnetic permeability is the ability of a material to carry magnetism, indicated by the degree to which it is attracted to a magnet.

All stainless steels, with the exception of the austenitic group [300 series], are strongly attracted to a magnet.

Austenitic Grades
All austenitic grades have very low magnetic permeabilities and hence show almost no response to a magnet when in the annealed condition; the situation is, however, far less clear when these
steels have been cold worked by wire drawing, rolling or even centreless grinding, shot blasting or heavy polishing.

After substantial cold working Grade 304 may exhibit quite strong response to a magnet, whereas Grades 310 and 316 will in most instances still be almost totally non-responsive.

The change in magnetic response is due to atomic lattice straining and formation of martensite.

Centimeter · Post by **Centimeter** » Tue Apr 01, 2008 4:56 pm

Were the steel 18/10, it would not experience this magnetic property, even after cold working. At least not this strong. 18/8 would be a different story.

I made some phone calls and found out that the pot is made out of a new stainless steel called JYH21CT. This is a steel with magnetic properties that allow it to be heated via induction. It is essentially the same composition as 304 except it has no nickel and it has 21% chromium rather than 18%. Thus, it is essentially 21/0 ss.

I found a study here http://www.ri-xing.com/download/upload_ ... 143014.pdf" onclick="window.open(this.href);return false;" rel="nofollow that shows various experiments that indicate that the steel is equally resistant to salt water and pitting conditions as 304ss. Would this data indicate alcohol corrosion resistance?

Has anybody used 18/0 (400 series) in their still and if so have you noticed corrosion problems?

Post by **HookLine** » Tue Apr 01, 2008 5:16 pm

Interesting product.

Centimeter wrote:Would this data indicate alcohol corrosion resistance?

If it is comparable to 304, then it is almost certainly resistant to corrosion by alcohol. But obviously I can't guarantee that.

junkyard dawg · Post by **junkyard dawg** » Thu Apr 03, 2008 3:07 pm

I'm gonna guess that there should be little problem using that steel.

just a gut feeling tho.....

a guess...

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Magnetic Stainless Steel?

Magnetic Stainless Steel?

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