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Technical Data » Grade » CPM 3V

CPM 3V Powder Metal Tool Steel

CPM 3V is a powder metal tool steel with a unique chemical composition that results in tooling with an outstanding combination of properties including high impact toughness and good wear resistance. The impact toughness is enhanced by the fine grain size, small carbides, and superior cleanliness of the powder metallurgy (PM) microstructure.

APPLICATIONS: CPM 3V should be considered for service in blanking & sizing dies, shear blades, cold and hot forging punches, powder compaction tooling and many other applications where a combination of strength, wear resistance and toughness is required.

Composition
C Mn Si Cr Mo V
0.80 0.30 1.00 7.50 1.30 2.75
Relative Properties
3V Tool Steel Comparison, High Speeds Steel, Hudson Tool SteelThermal Expansion, 3V Tool Steel, Hudson Tool Steel
Physical Properties
  • Density: 0.279 lb/in3 (7750 kg/m3)
  • Specific Gravity: 7.75
  • Specific Heat: 0.11 Btu/lb/ ° F
  • Modulus of Elasticity: 30 x 106 psi (207GPa)
  • Machinability: 50-60% of a 1% carbon steel
Impact Toughness, 3V Tool Steel, Hudson Tool SteelHeat Treatment Response, 3V Tool Steel, Hudson Tool Steel
Heat Treating Instructions
Hardening

Preheating: 1500-1550°F (816-845°C), equalize.

Austenitizing (High Heat): Heat rapidly from the preheat.

For Maximum Wear Resistance: Furnace or Salt Bath: 2000-2050°F (1093-1121°C)
Soak for 20 minutes minimum at temperature.

For Balanced Wear & Toughness:
Furnace or Salt Bath: 1950°F (1066°C)
Soak for 20 minutes minimum at temperature

For Maximum Toughness:
Furnace or Salt Bath: 1875-1900°F (1024-1038°C)
Soak for 45 minutes minimum at temperature

Quenching: Air, pressurized gas, warm oil, or salt. For pressurized gas, the furnace should have a minimum quench pressure of 4 bars. For oil, quench until black, about 900°F (482°C), then cool in still air to 150-125°F (66-51°C), then cool in still air to 150-125°F (66-51°C). For salt maintained at 1000-1100°F (538-593°C), equalize in the salt, then cool in still air to 150-125°F (66-51°C).

Tempering: Temper immediately after quenching. Typical temperature range is 1000-1100°F (524-593°C). Do not temper below 950°F (510°C). Hold at temperature for 1 hour per inch of thickness, 2 hours minimum, then air cool to ambient temperature. Double tempering is required. Triple tempering is recommended when austenitized at 2000°F (1093°C) or above and when tooling will be wire EDM'd from a solid block after heat treatment.

Annealing

Annealing must be performed after hot working and before rehardening.

Heat at a rate not exceeding 400°F per hour (222°C per hour) to 1600-1650°F (871-899°C), and hold at temperature for 1 hour per inch of maximum thickness; 2 hours minimum. Then cool slowly with the furnace at a rate not exceeding 50°F per hour (28°C per hour) to 1000°F (538°C). Continue cooling to ambient temperature in the furnace or in air. The resultant hardness should be approximately 241 HBW.

*CPM, 1V, 3V, 9V, 10V, 15V, S30V, S90V, Rex M4, Rex T15, and Rex 76 are trademarks of Crucible Industries LLC


All tool steel is sold as annealed with the exception of P20 and 4140HT, which are heat treated to HRC 28/32
Hudson Tool Steel Corporation© 2023 Hudson Tool Steel
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California800-996-0411

17871 Park Plaza Dr., Suite #135
Cerritos, CA 90703

New Hampshire866-557-2874

14 Industrial Park Dr
Dover, NH 03820

North Carolina800-991-0306

434 Springbrook Road
Charlotte, NC 28217

Illinois800-338-4566

7987 Crest Hills Drive
Loves Park, IL 61111

Sales Offices: Tennessee 888-848-0037 Michigan 833-235-1678