PROPRIETARY CPM Rex 76 (HS) Tool steels

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

Data updates

Latest Update: 2016-03
Total number of updates: 2
Update History
2015-08

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PROPRIETARY CPM Rex 76 (HS) Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
1.5000
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Co
VALUE
8.5000
UNIT
%
CAS NUMBER
7440-48-4
CRITERIA
Cr
VALUE
3.7500
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mo
VALUE
val1
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UNIT
%
CAS NUMBER
7439-98-7
CRITERIA
S
VALUE
val1
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UNIT
%
CAS NUMBER
7704-34-9
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 CPM Rex 76 (HS) Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 214 GPa
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Density
7.72 — 8.255 kg/dm³
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Poisson Coefficient
0.27 — 0.3
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This material has 29 properties — only a subset is shown here.

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PROPRIETARY CPM Rex 76 (HS) Heat Treatments

  • Forged: 1095-1150°C. Do not forge below 925°C. Slow cool after forged. Annealed: Heat to 870°C, hold 2 hours, slow cool no faster than 15°C per hour to 540°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°C below original tempered temperature, or 540°C minimum, hold 2 hours, then furnace cool or cool in still air. Hardened: Pre-heat: Heat to 815-845°C, hold long enough to soak through. For vacuum heat treated, an additional pre-heat at 1010-1040°C is recommended to minimize hold time needed at austenitized temperature. Quench: Quench rapidly to below 595°C, equalize, then air cool to hand warm, below 50°C. A fast quench rate from hardened temperature to below 595°C is critical to achieve optimum heat treat response. Temper: 540°C minimum. Triple or quadruple tempered required, hold 2 hours minimum at temperature. Cool to room temperature between tempers.Straightening: Best done warm 400°F minimum (205°C). Straightened after salt quenched and before cooled to below 205°C is preferred.

PROPRIETARY CPM Rex 76 (HS) Mechanical Properties

Temperature

PROPERTY / VALUE
Brinell Hardness (HB)
285 — 311
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  • 2Cross References
  • 7Composition
  • 7Mechanical Properties
  • 11Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability
  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep
  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology
  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
  • 1Total Suppliers