CPM-10V Tool Steel Material Information

  CPM-10V material was the first in the family of high vanadium tool steels made by Crucible.  Cpm-10V optimized the vanadium content to provide superior wear resistance while maintaining toughness and fabrication characteristics comparable to D-2 and M-2 material.  CPM-10V is exceptional for wear resistance and good toughness, makes it an excellent candidate to replace carbide and other highly wear resistance materials in colds work tooling applications, particular where tool toughness is a problem or where cost effectiveness can be demonstrated.

 The CPM process produces very homogeneous, high quality steel characterized by superior dimensional stability, grindability, and toughness compared to steels produced by conventional processes.

 The combination of properties makes CPM-10V material an ideal choice for a variety of applications such as stamping and forming tools, powder compaction tooling, industrial knives and slitters, plastic mold inserts, wear parts, punches and dies, blanking and piercing dies, woodworking tools and plastic injection barrels.

 Mechanical Properties

1.       Impact Toughness

  • Depending upon the application requirements for hardness, lowering the hardening temperature (underhardening) increases toughness.

     

    Hardening Temperature

    F                        C

    Tempering Temperature

    F                        C

     

    Hardness

    HRC

    Charpy C-Notch

    Impact Strength

         Ft./lb.       (J)

    Bend Fracture

    Strength

         ksi          (Mpa)

    2150               1175

    1000                540

    64

           15            20

         627           4322

    2100               1150

    1000                540

    63

           16            22

         615           4239

    2050               1120

    1025                550

    61

           23            30

         635           4377

    1950               1065

    1025                550

    59

           26            35

         ----             -----

     

     Machinability and Grindability

     

  • Machinability in the annealed condition is similar to CPM-T15 high-speed steel.  Similar grinding equipment and practices used for high-speed steels are recommended.  “SG” type of alumina wheels or CBN wheels have generally given the best performance with CPM grades.

Plate
  • Upto 1” +/- .000 upto .000

  • 1” to 2 ½” +/- .000 upto .000

  • Other sizes available upon request
Rounds
  •  Upto 1” +/- .010 upto .015

  •  1” to 3” ” +/- .020 upto .030

  •  Other sizes available upon request
Critical Temperature 1540 F (840 C)
Forging

2000-2100 F (1095-1150 C).  Do not forge below 1700 F (930 C)   Slow cool

Annealing

Heat to 1600 F (870 C), hold for 2 hours, slow cool no faster 30 F (15 C) per hour to 1000 F (540 C), then furnace cool or cool in still air to room temperature.

BHN around 255-277
Stress Relieving

Annealed Parts:   Heat to 1100-1300 F (595-700 C), hold 2 hours, then furnace cool or cool in still air.

Hardened Parts: Heat to 30 F (15 C) below original tempering temperature, hold 2 hours, then furnace cool or cool in still air

Straightening: Best done warm 400-800 F (200-430 C)

Hardening 

 

Preheat:  Heat to 1500-1550 F (815-845 C) Equalize

Second pre-heat stage at 1850-1900 F (1010-1040 C) suggested for vacuum or atmosphere hardening.

Austeniztize: Heat to 1850-2150 F (1010-1175 C), hold time at temperature 30-45 minutes.

Quench: Air or positive pressure quench (2 bar minimum) to below 125 F (50 C), or salt or interrupted oil quench to about 1000 F (540 C), then air cool to below 125 F (50 C).  Salt bath treatment, if practical, will ensure the maximum attainable toughness for a given hardening treatment.  Vacuum or atmosphere quench rate through 1850-1300 F (1010-705 C) range is critical to achieve optimum heat treat response.

Temper: Double temper at 1000 F (540 C) minimum, 2 hours minimum each time.

Size Change: 0.03 / 0.05%

Stress Relieving

 

Annealed Parts:

   Heat to 1100-1300 F (595-705 C), hold 2 hours, then furnace cool or cool in still air.

Hardened Parts:

   Heat 25-50 F (15-30 C) below original tempering temperature, hold 2 hours, then furnace cool or cool in still air.

Recommended Heat Treatment

 

For the best combination of toughness and wear resistance, austenitize CPM-10V at 2050 F (1120 C), hold 30-45 minutes, and quench.

Temper 3 times at 1025 F (550 C)

Annealing

 

Anneal Cooling Method: Heat to 1650 F (900 C), hold for 2 hours, slow cool no faster that 25 F (15 C) per hour to 1100 F (595 C), then furnace cool or cool in still air to room temperature.  BHN around 241
AIM Hardness

 

HRC 58-60

Higher austenitizing temperatures can be used to obtain higher hardness, at a slight decrease in impact resistance.  The lower austenitizing temperatures provide the best impact toughness.

CPM-10V Material In Stock Color Code: Pink 
Plate Dimensions
  •   ½” upto 2 ½” (thickness)

  •   Other sizes available upon request

Round Dimensions
  •  ½” upto 3”

  •  Other sizes available upon request

CPM-10V Typical Analysis

C

Mn

Cr

V

2.45%

1.3%

5.25%

9.75%

 · Slight variations from typical analysis shown may occur in order to maintain the desired graphitizing potential.