PROPRIETARY CRUCIBLE REX M2 Tool steels

Material group: Ferrous Alloys / Tool steels
Country / Standard: PROPRIETARY

Data updates

Latest Update: 2017-11
Total number of updates: 3
Update History
2016-03 2015-08

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PROPRIETARY CRUCIBLE REX M2 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.8500
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
4.1500
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mo
VALUE
5.0000
UNIT
%
CAS NUMBER
7439-98-7
CRITERIA
V
VALUE
val1
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UNIT
%
CAS NUMBER
7440-62-2
CRITERIA
W
VALUE
val1
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UNIT
%
CAS NUMBER
7440-33-7

Crucible Industries LLC., Product Data Sheets,

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PROPRIETARY CRUCIBLE REX M2 Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 210 GPa
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Density
7.72 — 8.14 kg/dm³
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Poisson Coefficient
0.27 — 0.3
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This material has 32 properties — only a subset is shown here.

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PROPRIETARY CRUCIBLE REX M2 Heat Treatments

  • Annealed: Heat to 870°C, hold 2 hours, slow cool no faster than 15°C per hour to 535°C, then furnace cool or cool in still air to room temperature. Stress relieved: Annealed Parts: Heat to 595-705°C, hold 2 hours, then furnace cool or cool in still air. Hardened Parts: Heat to 15-30°C below original tempering temperature, hold 2 hours, then furnace cool or cool in still air. Hardened: Preheat: Heat to 790-815°C Equalize. Second Preheat: Suggested for vacuum hardening. Heat to 1010-1040°C. Austenitize: 1150-1220°C, hold time at temperature 5-30 minutes. Quench: Air or positive pressure quench (2 bar minimum) to below 50°C, or salt or interrupted oil quench to about 540°C, then air cool to below 50°C. Temper: Two to three times at 540°C or higher. 2 hours minimum each time. Triple tempering is recommended when hardening from 1150°C or higher. Air cool to room temperature in between tempers.

PROPRIETARY CRUCIBLE REX M2 Mechanical Properties

Temperature

PROPERTY / VALUE
Brinell Hardness (HB)
217 — 255
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  • 4Cross References
  • 5Composition
  • 13Mechanical Properties
  • 8Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability
  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep
  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology
  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
  • 1Total Suppliers