I Didnt Know That A Coating Can Make Steel 3X Stronger

I did a recent customization of this exact knife. It is nice and thick 1/4" with a full taper flat grind. It wasn't easy to grind def tougher/harder than typical 440c. Don't know if it's brittle though but I doubt it.
The advertising is a gimmick for sure.
 
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How funny, the wording says up to 3x harder than an untreated blade. No shyt Sherlock. 😒 some dweeb in a room is like "well, technically.. if we compare its raw un heat treated brinell hardness to its Rockwell c scale hardness after heat treat it's not lying" lol

It's vague on purpose, misleading, and means absolutely Richard.

And the titanium bonded coating that isn't on the sharpened edge means absolutely nothing. It's just plain cheap 420 steel where it matters, the edge.
 
On drills and end mills they coat them for heat, wear, lubricity. The point of coating a knife for hardness is useless. With the exception or carburization in some applications. I suppose the rando walking through Walmart sees "3x harder than titanium" and thinks wow! And buys it.
 
There is definitely some magic to coatings but, I don't think it really applies to knives since we are not cutting steel and knives have a very acute edge.
 
Didn't Buck at one time market a coated version of one/some of their knives (the cross lock models ?) that was supposed to have better edge retention due to a hard coating applied to the blade.
 
Crag the Brewer said:
Harder doesn't necessarily mean Stronger.
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shinyedges said:
On drills and end mills they coat them for heat, wear, lubricity. The point of coating a knife for hardness is useless. With the exception or carburization in some applications. I suppose the rando walking through Walmart sees "3x harder than titanium" and thinks wow! And buys it.
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LastRodeo said:
Never heard that before.
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Titanium by itself is soft, although it's strong for the weight due to the stiff crystalline structure. The coatings on drills etc are not pure titanium but a titanium nitride compound, completely different material but some companies just refer to it as titanium because it's a good buzzword.

Kind of like how aluminum is a soft metal but aluminum oxide is the hard material that sapphires and rubies are made of.
 
I would also think that since the edge gets sharpened you would not have that coating on the edge so it wouldnt make the edge any stronger.A thin coating on top of steel cant really help in toughness or shock, only corrosion protection and maybe wear.
 
Tsujigiri said:
Titanium by itself is soft, although it's strong for the weight due to the stiff crystalline structure. The coatings on drills etc are not pure titanium but a titanium nitride compound, completely different material but some companies just refer to it as titanium because it's a good buzzword.

Kind of like how aluminum is a soft metal but aluminum oxide is the hard material that sapphires and rubies are made of.
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I was referring to coatings in general on drills and endmills. Like zirconium coated endmills for aluminum, it has a purpose i.e lubricity. The "titanium" coating on these knives is a marketing ploy for uninformed consumers.
 
shinyedges said:
I was referring to coatings in general on drills and endmills. Like zirconium coated endmills for aluminum, it has a purpose i.e lubricity. The "titanium" coating on these knives is a marketing ploy for uninformed consumers.
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Oh yeah, I got that, but I thought you were responding to the question about titanium being soft? Because the coatings on tooling are not soft, but they also aren't elemental titanium. I'm guessing that the titanium that's being referred to with this knife is also a titanium compound, so it's not soft like titanium by itself is. Either way, I agree that it's a dumb marketing tactic for the knife.
 
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