PROPRIETARY CPM CRU-WEAR Tool steels
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PROPRIETARY CPM CRU-WEAR Chemical Composition
Crucible Industries LLC., Product Data Sheets,
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PROPRIETARY CPM CRU-WEAR Physical Properties
Temperature
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PROPRIETARY CPM CRU-WEAR Heat Treatments
- Annealed: Heat to 1550-1650°F (840-900°C), hold 2 hours, slow cool 50°F (28°C) per hour to 1200°F (650°C). Stress relieved: Annealed Parts: Heat to 1100-1300°F (595-705°C), hold 2 hours, then furnace cool or cool in still air. Hardened Parts: Heat to 25°F (15°C) below the original tempering temperature, hold 2 hours, then furnace cool or cool in still air. Hardened: Preheat: Heat to 1550-1600°F (840-870°C) Equalize. Austenitize: 1850-2050°F (1010-1120°C), Hold time at temperature 20-45 minutes. Quench: Air or positive pressure quench (2 bar minimum) to below 125°F (50°C). Temper: 900-1050°F (480-565°C). For the best combination of toughness and wear resistance, austenitize at 1950°F (1065°C). Temper 3 times at 1000°F (540°C).
- Annealing: Heat to 840–900°C (1550–1650°F), hold 2 hours, slow cool 25°C (50°F) per hour to 650°C (1200°F).
Stress Relieving Annealed Parts: Heat to 595–705°C (1100–1300°F), hold 2 hours, then furnace cool or cool in still air.
Hardened Parts: Heat to 15°C (25°F) below the original tempering temperature, hold 2 hours, then furnace cool or cool in still air.
Hardening: It is customary to use two furnaces: one furnace to preheat and the second furnace to austenitize. This ensures that the transition from the pre-heat temperature to the austenitizing temperature occurs fairly rapidly.
Preheat: Heat to 840–870°C (1550–1600°F), Equalize.
Austenitize: 1010–1120°C (1850–2050°F), hold time at temperature 20–45 minutes.
Quench: Air or positive pressure quench (2 bars minimum) to below 50°C (125°F). Salt bath treatment, if practical, will ensure the maximum attainable toughness for a given hardening treatment.
Temper: 480–565°C (900–1050°F). Double tempering is mandatory, and triple tempering is recommended. Cool to room temperature in between tempers. Temper 2 hours minimum each time or at least 1 hour per 25 mm of thickness for sections over 50 mm thick.
For the best combination of toughness and wear resistance, austenitize at 1065°C (1950°F). Temper 3 times at 540°C (1000°F).
PROPRIETARY CPM CRU-WEAR Mechanical Properties
Temperature
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PROPRIETARY CPM CRU-WEAR International Equivalent Materials
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