Teflon coating removal

Letter 2089

Teflon coating removal

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Hi,

I am looking for a way to remove teflon coating from 304 stainless steel without heating it to over 400 degrees (f).

If anyone can help, I would appreciate it.

Paul

Paul Wisniewski
a machine tool company - S. Windham Connecticut

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Paul

Teflon can be effectively removed by abrasive blasting with aluminum oxide blast media. I trust that your part is able to withstand the rigors of abrasive blasting.

Dan Penford
- Sarnia, Ontario, Canada

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Avoid burning off PTFE due to highly corrosive byproducts liberated at temperatures over 800 F. Can damage oven internals and substrate.

Charles Fields
- Dover, New Jersey

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Paul As Dan said, you can do it by gritblasting with aluminium oxide, but depending on the thikness it will deform the the substate. You can use a plastic media to do it like "aerolite" is the abrasive that is used for the airplanes paint stripping. If you Teflon is a thin coating, you can try with n-metil-2-pirrolidone solvent.

Jordi Pujol
- Barcelona

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Paul I have used the chemical method to remove Teflon from lock nuts.

Tim Wright
- Woodstock, Ontario

Hi, Tim. Are you sure it was Teflon? All of the locknuts that I've seen are "Nyloc" (nylon). Nylon dissolves readily in simple acids, whereas Teflon does not.

Regards,

Ted Mooney, P.E.
finishing.com
Brick, New Jersey

January 21, 2008

Need to remove teflon coating from steel without damaging the integrity of the metal.

Mark Rubin
buyer - Las Vegas, Nevada

January 22, 2008

It's going to depend on the details of your situation, Mark: The quantity in question, what you are going to do with the parts after teflon removal, their size and shape, whether abrasives can get to the recesses, etc. If you patiently search the site you will find details and recommendations for the three different approaches of abrasive removal, solvent removal, and burn-off. Or, if you can describe the parts and quantities, someone may be able to suggest which of the three methods is most promising. Good luck.

Ted Mooney
finishing.com
Brick, New Jersey

May 16, 2009

I'm trying to remove Teflon from some favorite stainless steel Cuisinart pans. I don't want to wreck the stainless...it needs to be able to brushed out smooth after the Teflon is removed.
Would you advise chemical or blasting?
Where does one typically buy the products needed?
Thanks, Greg

greg larsky
- seattle Washington

May 19, 2009

Hi, Greg. Unless someone reports that they have done this successfully, I wouldn't plan on it. The reason such a slippery thing as Teflon was able to stick to the pan is due to mechanical interlocking; the surface of the stainless was specially etched to look like a sponge.

Regards,

Ted Mooney
finishing.com
Brick, New Jersey

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