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Author Topic: Indiegogo 7.1 gallon Stainless Steel Fermenter  (Read 12300 times)

Offline hopfenundmalz

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Re: Indiegogo 7.1 gallon Stainless Steel Fermenter
« Reply #75 on: October 27, 2014, 06:11:02 pm »
In addition to the leaks and rust issue I would also be concerned about the content of the metal. I wouldn't trust that it is really stainless steel given the other problems people have experienced.

Not thait's anything but the coarsest of tests, but has any put a magnet on one of these?
The grades of SS that we use are austenitic and non-magnetic (300 series).

The 400 series if ferritic or martensitic, and those can have magnetic properties. I just have to look at the fridge in the kitchen.

That said for food grade you generally want 304 or better. Knives are often made with 400 grades due the fact that they need to hold a sharp edge. Just checked the nice German steel knives in the kitchen, and those are magnetic.
Jeff Rankert
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