Metallurgy Question

[TK9477]

Hi all

I'm looking at a custom folder & have two in mind with the same compound grind however the metals are different.

One is CTS-B75P & the other is CPM-154...what's the difference?

 

[marthinus]

B75P is a powdered version of old BG-42. CPM is the powdered version of 154CM.

Both are great steels when heat treated well. Cant really go wrong with either one IMO.

Here is a comparison.

http://www.zknives.com/knives/steels/steelgraph.php?nm=CPM154,B75P&ni=,3326&hrn=1&gm=0

 

[TK9477]

Cool & thanks but I was never too good at chemistry!!

What it comes down to is how hard are they? Can they keep an edge? Are they easily sharpened?

 

[The Aflac Duck]

Heat treat has a lot more to do with the steel than the elemental composition...

Good steel+bad heat treat=bad steel

Bad steel (whatever that is)+good heat treat=good steel

poorly heat treated M390 might perform worse than a "lower grade" steel like 440C that has been heat treated properly...

 

[mete]

Don't worry , if it's a premium 'powder steel ' it will perform very well !!

 

[marthinus]

Cool & thanks but I was never too good at chemistry!!

What it comes down to is how hard are they? Can they keep an edge? Are they easily sharpened?

HRC or rockwell hardness will give an idea on what to expect with regards to your other questions, however these steels will keep a keen edge quite well and are generally easy to shape and maintain and cater an edge to your uses.

Your ability to bring out the best in a steel for your uses is quite important and overlooked by many.

As mete said. Don't worry.