Benefit of CPM D2 and CPM 154?

J

John_0917

Joined
Apr 15, 2014
Messages
3,384
Can anyone share with us the exact benefits of having a blade made from the PM process versus conventional steel making when it involves the same composition of elements. For example, Crucible does/did make a PM version of D2 that I know at least one production manufacturer has used and many manufacturers make knives using conventional D2. The same goes for CPM154 and 154CM, I understand the process is different, but what benefits, aside from more uniform structure of the metal is there to be gained from a PM manufactured steel versus a conventional steel of the same type?
 
The grain patterns of the steel are finer, and the carbides are smaller and more uniformly distributed than the ingot counterparts of those powder steels. The powder process also lets the steel be hardened further. The finer grain structure and smaller, better distributed carbides give the blades added toughness (resistance to chipping and breaking), while the higher hardness gives the steel more strength (resistance to deformation and rolling).

The benefits of CPM D2 are relatively small compared to D2, which is why Crucible stopped offering it. CPM 154 has a lot of fans and seems to offer good step up from ingot 154CM
 
Twindog said:
The grain patterns of the steel are finer, and the carbides are smaller and more uniformly distributed than the ingot counterparts of those powder steels. The powder process also lets the steel be hardened further. The finer grain structure and smaller, better distributed carbides give the blades added toughness (resistance to chipping and breaking), while the higher hardness gives the steel more strength (resistance to deformation and rolling).

The benefits of CPM D2 are relatively small compared to D2, which is why Crucible stopped offering it. CPM 154 has a lot of fans and seems to offer good step up from ingot 154CM
Click to expand...

Ah, that makes sense, thank you for the explanation. That makes perfect sense about the toughness, I would not have guessed about the higher hardenability.
 
You must log in or register to reply here.
Back
Top