Ankerson and others, I need help.

[technician1]

Which would hold a better edge.
154cm at 58-60 HRC
CPM-M4 at 59-61 HRC
Thanks for your input.

 

[EagleScouter]

CPM M4

Chart is from Crucible.

 

[singularity35]

All things being equal, CPM-M4 will leave 154CM away in edge holding.

 

[michaelm466]

CPM-M4, by a noticeable margin, though I'd prefer a little harder heat treat on my M4 if possible.

 

[technician1]

That's what I was thinking, my concern is "optimal hardness", the CPM-M4 seemed on the soft side.

 

[Reeek]

Here is Jim's rankings from his thread. I don't think the HRC differences are going to close the gap between category 2 and category 6


Category 1

CPM-S90V (Military and Para 2) (60)
CTS-20CP (Para 2) (60)
M390 (Mule) (60.5)

Category 2

M390 (60)
CPM M4 (62.5)
CPM-S90V (59) (Manix 2 with 30 Degree Micro Bevel)
CPM-S60V
VANAX 75 (Kershaw Tilt)

Category 3

Vanax 35 (59.5)


Category 4

ZDP-189 (65)
CPM-154 (62)
ELMAX (60)
CTS-XHP (Military) (60+)
Super Blue (61.5)


Category 5

S30V (60)
VG-1
CPM - D2 (62)
N690
ATS-34 (59)
CPM-S35VN (59)
N680
ELMAX (58.5) Mule

Category 6

INFI
154CM (61)
14C28N

Category 7

VG-10
S30V (58.5)
AUS-8A
SG-2
5160 (55)
13C26N
X-15

Category 8

H-1
420 HC (Buck 110)

Category 9

CTS-BD1

 

[matt123abc]

Definately m4, although for optimal edge holding (for normal cutting tasks) m4 supposively does better at 63-64 hrc.

 

[kestrel57]

I think I read the Gayle Bradley is at 65. The Contego at 62 - 64. Both do well in rope cutting tests --- the Bradley probably does better.:thumbup:

 

[Ankerson]

CPM M4 Defiantly.

 

[turk.919]

Wow... I need to try new steels!