What designates stainless as food grade?

"kklein" wrote in message
...
What designates stainless as food grade?


With a former employer, I have seen 300-series and 400-series stainless
steel alloys both used in food grade applications. Also the company used
several aluminum alloys and hot-dip-tin-coated cast iron.

More critical than the actual alloy was that the stainless steel did not
have porosity. Some part designs were cast and the main thing we tried to
acheive was lack of porosity which could trap food particles and cause
bacteria formation. I suppose this was also important in welded parts but I
worked in the foundry.

Mark

"kklein" wrote in message
...
What designates stainless as food grade?



Some grades are acceptable ONLY for milk products, also. 304, I believe,
but don't quote me unless I guessed right.

Steve

On Sun, 29 Aug 2004 16:16:07 -0700, "SteveB"
wrote:


"kklein" wrote in message
...
What designates stainless as food grade?



Some grades are acceptable ONLY for milk products, also. 304, I believe,
but don't quote me unless I guessed right.

Steve

304 can discolor with some cleaners. A lot of what constitutes
sanitary has to do with fabrication, polishing, gasket compounds, and
on and on. Here's a site you can look over, although like a lot of
standards outfits, it's pretty bad. Try the FAQ's, plus the Links
page has links to the FDA and US Dept. of Agriculture.

Pete Keillor

what would be a food grade aluminum for use in a mustard dispenser?

In article , williamhenry
wrote:

what would be a food grade aluminum for use in a mustard dispenser?



something very non-reactive like 1100.

"williamhenry" wrote in message
. ..
what would be a food grade aluminum for use in a mustard dispenser?


I don't know of one specifically for this application.

Mark

Pure, aluminum is least corroded by food products, as opposed to aluminum
alloys.

Mark wrote:

"williamhenry" wrote in message
. ..
what would be a food grade aluminum for use in a mustard dispenser?


I don't know of one specifically for this application.

Mark