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 Ct.

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

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

Charles Fields
- Dover, NJ

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

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

Tim Wright
- Woodstock, Ontario

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

Mark Rubin
buyer - Las Vegas, Nevada

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, P.E.  finishing.com Brick, NJ

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