| Crucible Steels for Knife Making |
![[knifes]](../images/cutlery1.jpg) |
| Stainless |
|
|
| 440C |
| 440C is a high hardness martensitic stainless steel (HRC 58/60) which offers good wear resistance
and good corrosion resistance.
|
| 154 CM |
| 154 CM is a high molybdenum modification of 440C offering improved wear resistance
(edge retention), better corrosion resistance, and excellent polishability.
|
| NEW! CPM S30V |
| CPM S30V was designed for cutlery and offers the best overall combination of hardness, corrosion
resistance and wear resistance.
|
| CPM S60V (440V) |
| CPM S60V was the first high wear stainless produced by the CPM process. Its high
vanadium content gives it superior wear resistance while maintaining the corrosion resistance of 440C.
|
| CPM S90V (420V) |
| CPM S90V offers significant improvement over S60V in both wear resistance and corrosion resistance.
It has the highest wear resistance and best edge retention of any stainless steel available.
|
|
CPM - Crucible Particle Metallurgy
|
|
The CPM process begins with the production of fine particles of steel by gas atomization of a prealloyed melt.
In the atomizer, the molten metal is poured through a small nozzle where high pressure gas turns the liquid
stream into a fine spray of tiny spherical droplets. These liquid droplets rapidly solidify into tiny powder
particles which are spherical in shape and uniform in chemical composition. The atomized powder
is collected and loaded into steel cans which are then hermetically sealed (i.e. evacuated and welded shut).
The filled cans are exposed to sufficient temperature and pressure to consolidate the powder inside to
100% dense steel. The fully dense compacts then undergo normal mill processing to finished bar.
The CPM process results in very fine-grained steel which has a homogeneous composition and an extremely
uniform microstructure. In the higher carbon CPM grades, the carbides which precipitate during solidification
are extremely fine and remain so throughout mill processing and in the finished bar.
|
|
|
| Tool Steels |
| Grade |
Carbon |
Chromium |
Molybdenum |
Vanadium |
Tungsten |
| Airkool(A2) |
1.00 |
5.25 |
1.10 |
0.25 |
--- |
| Airdi 150 (D2) |
1.55 |
11.50 |
0.80 |
0.90 |
--- |
| Rex M2 |
0.85 |
4.15 |
5.00 |
2.00 |
6.40 |
| CPM 3V |
0.80 |
7.50 |
1.30 |
2.75 |
--- |
| CPM 10V |
2.45 |
5.25 |
1.30 |
9.75 |
--- |
|
![[wear and toughness chart]](../images/cutleryWearTough.gif) |
|
Advantages of CPM
Ease of Fabrication for the Knifemaker:
- Consistent Heat Treat Response
- Predictable Size Change on Heat Treat
- Excellent Grindablility
Higher Performance for the Knife User:
- Higher Alloy Grades Possible
- Improved Edge Retention
- Improved Toughness
|
|
|
|
Airkool(A2)
Airkool is a 5% chromium, air-harding tool steel with good wear resistance. It is often used for blades because
it is easy to grind and heat treat.
|
Airdi 150 (D2)
Airdi 150 is 12% chromium, air-hardening tool steel with improved wear resistance over A2.
|
Rex M2 (M2)
Rex M2 is actually a high speed steel with better wear resistance and better attainable hardness (HRC 62)
than D2 for better edge retention.
|
CPM 3V
CPM 3V has wear resistance about equal to M2 for edge retention, and at HRC 58/60, it has more than twice the
toughness of A2 for reduced chipping and breaking. It is easier to grind than D2.
|
CPM 10V
CPM 10V has the highest wear resistance and the best edge retention of all the blade steels due to the
presence of a large volume of vanadium carbides.
|
|
Crucible offers blade steels in hot rolled sheets:
18-22" wide X 72" long
from 0.100" to 0.250" thick,
in full or half sheets.
Customer cutting/slitting is available.
Please inquire: 800-365-1168
|
For further property data and specific heat treatment, please contact your Crucible representative for data sheets.
Now in one location to serve you better!
Call Toll Free: 800-365-1168
or: (817) 649-2800
FAX: (817) 633-8142 or 800-483-7957
e-mail: knives@crucible.com
Crucible Service Centers
1101 Ave. H East
Arlington, TX 76011
|
|
|
The crucible logo,
Crucible, CPM 3V, CPM S30V, CPM S60V, CPM S90V, Airkool, Airdi, Rex M2, CPM 3V, CPM 10V,
Crucible Particle Metallurgy,
and The Tool Steel Pros are
trademarks of the
Crucible Materials Corporation, Syracuse, NY.
|
|
