Stellite 6K question???

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ap1169

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I just purchased a knife which was advertised to be STELLITE 6K, but is is marked stainless. I emailed the Seller and he swears it is stellite just not marked that way. How can I tell if it is what he says it is? It is not magnetic for one thing. Thank you, RObert
 
More details please, like what brand is the knife, what model, did you buy it from somewhere reputable or like ebay or something?

I wouldn't feel very confident if it was marked as stainless only. Did you see pictures before the purchase?
 
Since it is NOT magnetic and as far as I know most all knife steels are magnetic, could this be truly STELLITE???
It is very sharp, but could it be made out of 300 series stainless?
 
The auction has ended on the link that you posted. Are we to assume you bought the MORTY THE KNIFE MAN CUSTOM HANDMADE STELLITE 6K STEEL BOWIE W/ LEATHER SCABBARD with the price of $800 but best offer was accepted?

Never heard of morty the knife man, but a google search brings up what appears to be a fishing supply store containing very cheap looking knives.
 
Stellite has nearly the same density of steel, so that isn't going to be easy to check at home. And Stellite is arguably "stainless" - which was the reason it was first formulated. I just don't know if Stellite gets any harder than non-magnetic stainless steel, so it may be possible to pass off 303 as Stellite.
 
RX-79G said:
Stellite has nearly the same density of steel, so that isn't going to be easy to check at home. And Stellite is arguably "stainless" - which was the reason it was first formulated. I just don't know if Stellite gets any harder than non-magnetic stainless steel, so it may be possible to pass off 303 as Stellite.
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Satellite should actually show as softer than hardened 303 non-magnetic stainless I think. stellite is inherently a very soft material overall, because the substrate in which the carbide particles are held is very soft itself, and the hardness of those particles is what actually gives the material it's cutting ability as they act like a saw blade.
That is also why Stellite is not vey well suited to cutting harder materials, but accells at cutting more dense materials like fabric, leather, or flesh.

This is potentially a very hard fake to do testing on unless the material was actually tested by a professional honestly.
I would recommend just getting a refund if you have any doubts about the authenticity of the knife at all, as EBay will likely allow you to do so without much effort.
 
Stellite 6K will run around 47 Rc,but the hardness is deceiving. There's so much carbide
that it will skate a file easily, and high speed steel cutters won't cut it.
A magnet will not be drawn to it, as it's a cobalt based alloy with very little iron in it.
 
Yes, I did purchase this knife. I just contacted the Seller for proof of Stellite or supply a refund. I really like the knife, but I want Stellite not just stainless steel. Thank you for your input.
 
Well fooey on me! Seller will not refund the money. He swears that it is Stellite 6K!!!
 
ap1169 said:
Well fooey on me! Seller will not refund the money. He swears that it is Stellite 6K!!!
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Then he will have to offer definitive proof in order to be able to back up that claim, which as we discussed here, is very hard to do.
 
400 series stainless steels are hardenable, contain no Nickel, and exhibit strong ferromagnetism (attraction to a magnet). 300 series stainless steels are not hardenable, contain Nickel, and exhibit weak to zero ferromagnetism. Stellite 6-K is a Chrome Cobalt alloy. In spite of the fact that Cobalt by itself is strongly ferromagnetic, the 6K alloy exhibits no F/M.
If your knife shows any attraction to a magnet, it is bogus. Stellite is also much more resistant to corrosion than stainless steels. Most 300 S/S will not skate a file. Stellite 6-B will not skate a file.
 
tiguy7 said:
400 series stainless steels are hardenable, contain no Nickel, and exhibit strong ferromagnetism (attraction to a magnet). 300 series stainless steels are not hardenable, contain Nickel, and exhibit weak to zero ferromagnetism. Stellite 6-K is a Chrome Cobalt alloy. In spite of the fact that Cobalt by itself is strongly ferromagnetic, the 6K alloy exhibits no F/M.
If your knife shows any attraction to a magnet, it is bogus. Stellite is also much more resistant to corrosion than stainless steels. Most 300 S/S will not skate a file. Stellite 6-B will not skate a file.
Click to expand...

That's all been posted. What's your solution to telling Stellite from 300 series?
 
ap1169 said:
Well fooey on me! Seller will not refund the money. He swears that it is Stellite 6K!!!
Click to expand...

Who cares what the seller swears? Have you even done any research to see if "MORTY THE KNIFE MAN" makes custom knives in 6k??

His website looks to be filled with junk, mass made fishing knives, I would initiate a paypal claim or use ebay buyers protection or whatever you have to do.

The knife is marked "stainless" not "6k" or "stellite 6k" it's probably some cheap chineese made piece of crap and you got ripped off.
 
Get a refund, you won't be able to sell it even if it is Stellite because no buyers will believe it.
 
Is the maker's mark etched into the blade as with an acid etch? I think cobalt alloys are unable to be etched this way, so it could be proof that the blade is not stellite 6k.
 
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