how is 154cm for bushcraft? And how is it compared to 1095?

[Jason B.]

I imagine he looked it up and saw that the CPM process produces different hardness and toughness results than regular 154. It also costs more.

How is that "the same"?

Have you looked it up?

Different hardness and toughness?

It's obvious you do not understand the CPM process. I recommnd searching and reading up on the subject.

 

[Alberta Ed]

CM-154 and CPM-154 have identical chemical composition, but the powdered steel/particle metallurgy process results in a material with fewer occlusions, and probably superior toughness, given equivalent heat treat. I notice the difference between my Emerson QCQ7-A (CM154) and my Buck/BassPro 110 in CPM-154. The latter takes a finer edge and is somewhat easier to sharpen. Both are excellent cutlery steels IMHO and will do the job.

 

[RX-79G]

Have you looked it up?

Different hardness and toughness?

It's obvious you do not understand the CPM process. I recommnd searching and reading up on the subject.

Of course I have. How about you?

http://www.crucible.com/PDFs\DataSheets2010\Datasheet CPM 154 CMv12010.pdf

Crucible says their CPM version is tougher right in their data sheet. And several knifemakers have said that same heat treat and tempering results in higher working hardness for CPM without chipping.

CPM refines the metal compared to a more melt typical process, just like a more advanced heat treat refines the metal compared to a basic process. Chemistry is only one factor in blade performance.


I may only be a simple forger of carbon steels, but I can read and understand metallurgy texts.

 

[Jason B.]

Yes, I have actually done extensive testing with both steels using a CATRA machine. All testing samples were hardened to 61-62. I couldn't tell the difference in sharpening and the CATRA machine couldn't tell the difference either. Not surprising considering both steels are of the exact same composition, that makes them the same.

The PM process gives better distribution of the alloy elements that allows factors such as hardness and toughness to be better but this does not make the steel different. Both 154cm and CPM 154 have all the same elements therefore they are the same steel, only manufactured under different processes.

 

[RX-79G]

Yes, I have actually done extensive testing with both steels using a CATRA machine. All testing samples were hardened to 61-62. I couldn't tell the difference in sharpening and the CATRA machine couldn't tell the difference either. Not surprising considering both steels are of the exact same composition, that makes them the same.

The PM process gives better distribution of the alloy elements that allows factors such as hardness and toughness to be better but this does not make the steel different. Both 154cm and CPM 154 have all the same elements therefore they are the same steel, only manufactured under different processes.

You seem to be arguing that the word "same" can mean different things depending on who uses it.

Crucible sells CPM 154 and 154 as two different products, at different prices with two different net results after heat treat. That might make them the same alloy, but not the same "steel".

If you think CPM is a scam, and they are the same thing, that's a different problem.

 

[SoldierOfChrist]

well the blade is a full flat grind on a 1 inch width blade(meaning from spine to edge). you think that would be too thin or good for regular wood/bushcraft work?

 

[shqxk]

Yes, I have actually done extensive testing with both steels using a CATRA machine. All testing samples were hardened to 61-62. I couldn't tell the difference in sharpening and the CATRA machine couldn't tell the difference either. Not surprising considering both steels are of the exact same composition, that makes them the same.

The PM process gives better distribution of the alloy elements that allows factors such as hardness and toughness to be better but this does not make the steel different. Both 154cm and CPM 154 have all the same elements therefore they are the same steel, only manufactured under different processes.

Just because they have exactly same amount of alloy doesn't mean they are the same steel seriously... just like fried egg and omelette are not the same...

 

[MatthewSB]

well the blade is a full flat grind on a 1 inch width blade(meaning from spine to edge). you think that would be too thin or good for regular wood/bushcraft work?

It depends on the exact angle of the grind, the angle of the cutting edge bevels, and the starting thickness of the blade stock. Also, the edge could be made stronger with a secondary bevel or a slight convex.

It's complicated

I've had edges that chipped or rolled easily, but once the edge was repaired and thickened out a bit they never had another issue.

 

[Rhinoknives1]

I use 1/8" by 1" high FFG on my paring/Utility culinary knives. Which I also have sheaths made for and they become B & T light Trail back packer knives.

If you want to beat it to death with this current Batoning fad I would go larger. 1 1/4" to 1/2" in 1/8th or thicker stock.