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Old 12-09-2019, 10:46 AM
squigly1965's Avatar
squigly1965 squigly1965 is offline
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Join Date: Jan 2010
Location: Modesto, CA
Posts: 252
Foil or ATP-641 440c heat treating

I am making some knives from 440c. I have previously sent them out for heat treatment. but have decided to try my hand at it. I have a heat treat oven able to hold temp +- 2degrees F.

After some research Iíve come up with 2 possibilities.
Wrap in 309/321(not sure which) foil or coat in ATP-641.

ATP-641 Seems like it can be used but only found a couple instances of it being recommended. As it would be the cheapest option I would prefer it. I did see somewhere the Brownells antiscale product could cause pitting at temps above 1600F.

If anyone has good/bad experience with ATP-641 on 440c I would appreciate your insight

Thank you for your time
Chris
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440c, a, ca, carbon, coat, coating, degrees, hand, heat, heat treat, heat treating, heat treatment, hunting, hunting knife, knife, knives, made, making, material, shop, stainless, wrap


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