Teflon coating and Temper?

[teejay1980]

I'm wanting to teflon/moly coat some of my knives and was wondering if the baking process to cure the teflon would mess up my temper? I'm using 440c and having it sent out for HT. The teflon requires 300 deg for 30 min. I've done a lot of guns with this stuff and its great but I don't have to worry about temper with guns.

[Ray Rogers]

300 degrees is less than the tempering temperature for 440C so the blade will not be harmed ....

[teejay1980]

Thanks that's all I needed to know

[metal99]

Originally Posted by teejay1980

I'm wanting to teflon/moly coat some of my knives and was wondering if the baking process to cure the teflon would mess up my temper? I'm using 440c and having it sent out for HT. The teflon requires 300 deg for 30 min. I've done a lot of guns with this stuff and its great but I don't have to worry about temper with guns.

Sounds pretty cool man. When you get it done you should share a few pics! I might be interested in giving this a shot

[Ray Rogers]

It's basically just a baked on paint, comes in a variety of colors, available from Brownell's. Probably the most appropriate use for it on knives would be to make a blade dead black for combat related reasons. It could also be used to make a carbon blade more weather resistant but really isn't needed for that unless you intend to leave the knife lay out unattended in the weather for several years as I have done. Normal care works just as well and looks better - the finish starts to look pretty bad if the knife actually gets used much. At about $25 per can back when I bought it, it's kind of expensive unless you plan to make a lot of black knives ....

[metal99]

What's the black coating the lots of the "tactical" factory folders have on them? I have a kerahaw that has a pretty tough black coating but it's so thin that I don't think it's a paint of any kind.

[EdStreet]

What epoxy is used on this blade? If there is any epoxy on there it will be broken by the temps

[Ray Rogers]

Some factory knives have powder coating, some probably something similar to this molycoat stuff, and some have black boron nitride which is probably the most expensive and durable coating. All this stuff seems pretty thin and can be scratched or scraped or chipped if you use the blade hard enough ...

[metal99]

According to kershaws site they use a "Titanium Carbo-Nitride Black Coating" I know when I went to sand down the spine of one of my knifes it was extremely hard to get off. It's probably a process that the average guy could never do.

[Ray Rogers]

Ya, that's one of the nitride coatings I mentioned. You're right, you can't do that but most of the others can be done with reasonable equipment investment...

[teejay1980]

Yeah I already have all the different colors and equipment that I use for guns. I don't use the spray can stuff though I use an airbrush it comes out a lot better and seems to hold up better. Its a great finish for guns really tough thought i would try it on some knives and see how it holds up ill post some pictures when I get a few finished.

[metal99]

What brand is it?

[Ray Rogers]

The difference between using the product on guns and knives is that with knives there is a lot more rubbing and scraping when the knife is used ...

[teejay1980]

It's brownells teflon moly bake on finish.

[FGYT]

Ive had DLC on a blade 97 rockwell and more slippery than teflon and can be coated over laser etching

not cheap and very expensive on large blades

currently looking at getting some Parangs Ceracoted

ATB

Duncan