Powdered steel vs Normal steel explained

[@CliffStamp]

Just as a point of clarification, the reason why particle/powder metallurgy is used isn't to decrease the grain size, as that is set mainly by the heat treatment. PM processing is used to ensure the steel is homogeneous. As the alloy content gets high enough, the segregation will be so high that the steel will become heterogenous in normal ingot steel making, this isn't good because it means the properties of the steel will vary through the ingot. The way this is achieved is through indirectly lowering the carbide size which is why if you were to compare both a PM and ingot version of the same steel (D2 for example) the carbides will be much larger in the ingot version. But the grain structure, given the same heat treatment, will be the same, as grain size refers to the size of the martensite "cells". It is possible to have a steel with a coarse carbide structure and fine grain size, or fine carbide structure and coarse grain size. On a side note, there are makers (Dozier, Boye, etc.) who argue that larger carbides are actually superior for knives, for similar reasons that some ABS smiths make for damascus/wootz blades.

[@CedricAda]

You've got great steel knowledge dude! Love geeking out on these vids

[@FearNoSteel]

Thanks bro, I know a little bit but there's a ton of people that know an insane amount. Rabbit hole can always get deeper ;) I'm glad you like these videos. I'd love to make more pure knife geek videos

[@DESCENDINGDR]

And the big difference between you and many others is that you are able to communicate your knowledge clearly. That is a gift, you are lucky. Keep up the good work!

[@butchthompson4279]

Thanks again BBG you fine tuned it again .They way you break it down sure helps.

[@FearNoSteel]

Thanks brother, give some ideas for questions you might have and I do my best to explain to the limits of my knowledge 😂

[@shayorshayorshayor]

Hey Big Brown Bear. Could you tell me your name or even your background. I want to cite this video and yourself for one of my engineering class assignments. Thank you

[@glenn8478]

Good video👍👍 thanks 😊

[@Nillaferilla]

Thanks for this video, man.

[@DutchBushcraftKnives]

would love to see a side to side comparison under a 1000x+ magnification. great video mate! This video also indirectly shows the importance of hammering traditional steel. The old masters perfected the way of using traditional ingot steel by kind of kneading and folding the steel as a dough to get rid of the large lumbs and create a steel that takes a real fine edge. This is why I have mixed feelings about powdered steels. It's very effective yet another scientific evolution that makes us forget the traditions and old ways as they are no longer 'needed'. CoS steel seems to do a dang fine job without the CPM process. Let's hope both new and old can keep here side to side providing their own specific qualities.

[@FearNoSteel]

The advantage of forged steel unfortunately isn't relavent for high performance knives today since there is only a small percentage of people making the own steel from raw ore. Steel is processed so well from the mill that the need to remove impurities or refine the structure is non existent. In fact, Forged knives today still need to be normalized after forging to bring the condition of the steel back to how it was from the mill before austenizing for the quench. Might have to make another video "Forged vs Stock removal" Also, I love me some Cobalt Special. It's like a stainless superblue.

[@DutchBushcraftKnives]

haha thanks man. You keep surprising me with your knowledge. Where do you read this stuff?

[@FearNoSteel]

Dutch Bushcraft Knives It's everywhere haha Check out this site. Forged vs stamped www.zknives.com/knives/kitchen/misc/articles/kkchoser/mkfacts.shtml Zknives is an amazing resource Heat treatment info www.cashenblades.com/heattreatment.html Forums have great sources too :)

[@FearNoSteel]

+Dutch Bushcraft Knives Above top secret. (Drops envelope) "Zknives"

[@FearNoSteel]

+Dutch Bushcraft Knives Above top secret. (Drops envelope) "Zknives"

[@ValorantRivals]

cool thx

[@davidpost6164]

So if you were to hear treat powderized steel would it ruin it?

[@Nillaferilla]

The proper heat treat is required even more for powdered steels from what I took from this video. In my own experience, it was always suggested to heat up the piece until it glows orange and let it sit until it cooled down to room temp. Then heat it up again until it's glowing, and let it cool again. With the carbon steels I have worked with we call it "Normalizing the steel". Which is basically smoothing out the grain structure.

[@soonerchik1]

But good info not much solid info out there for some reason thanks for the ingo

[@soonerchik1]

Info

[@FearNoSteel]

This is an older video, check out knife steel nerds for lots of very detailed knife metallurgy info

[@scooterams]

Clear as mud.. I feel dumber now that I've watched this.

[@FearNoSteel]

They just us PM technology as a way to shrink carbides in high carbide volume steels. There is no reason to PM something like 1095 because of this. That's the take away. Finer Carbides at higher volume is better.

[@soonerchik1]

You said Alloys when you meant elements. Steel is an Alloy ( combination of elements) carbon, iron , chromium etc are Elements on the periodic table . Just informing no biggie

[@FearNoSteel]

yes, slang for "alloying elements" mostly carbide forming ones