PROPRIETARY CPM Rex T15(HS) Tool steels

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

Data updates

Latest Update: 2025-10
Total number of updates: 3
Update History
2016-03 2015-08

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PROPRIETARY CPM Rex T15(HS) Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
1.6000
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Co
VALUE
5.0000
UNIT
%
CAS NUMBER
7440-48-4
CRITERIA
Cr
VALUE
4.0000
UNIT
%
CAS NUMBER
7440-47-3
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 T15(HS) Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 214 GPa
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Density
7.72 — 8.193 kg/dm³
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Poisson Coefficient
0.27 — 0.3
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This material has 84 properties — only a subset is shown here.

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PROPRIETARY CPM Rex T15(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 air cool or furnace cool. Hardened parts: Heat to 15°C below original tempered temperature, or 540°C minimum, hold 2 hours, then air cool or furnace cool. Straightened: Best done warm 200-430°C. Hardened: Pre-heat: 815-845°C, hold long enough to soak through. A second pre-heat at 1010-1040°C is recommended when vacuum hardened. Austenitize: 1165-1235° C. Quench: Salt, oil or atmosphere quench to below 595°C, equalize then air cool to hand warm, below 50°C. Temper: Triple temper at 540°C or higher. Hold at least 2 hours at temperature for each temper.
  • Annealing:
    Heat to 870°C (1600°F), hold 2 hours, slow cool no faster than 15°C (25°F) per hour to 540°C (1000°F), then furnace cool or cool in still air to room temperature.
    Stress Relieving
    Annealed parts: Heat to 595–705°C (1100–1300°F), hold 2 hours, then air cool or furnace cool.
    Hardened parts: Heat to 15°C (25°F) below original tempering temperature, or 540°C (1000°F) minimum, hold 2 hours, then air cool or furnace cool.
    Straightening: Best done warm 200–430°C (400–800°F)
    Hardening (Salt Bath or Vacuum Furnace preferred) Pre-heat: 815–845°C (1500–1550°F), hold long enough to soak through. A second pre-heat at 1010–1040°C (1850–1900°F) is recommended when vacuum hardening.
    Austenitize: 1165–1235°C (2125–2250°F). To achieve HRC 66–68, 1220–1235°C (2225–2250°F) is recommended.
    Quench: Salt, oil, or atmosphere quench to below 595°C (1100°F), equalize, then air cool to hand warm, below 50°C (125°F). Vacuum or atmosphere quenching may result in slightly lower hardness for larger tools. A fast quench rate from hardening temperature to below 595°C (1100°F) is critical to achieve optimum heat treat response. To minimize distortion, a slower cooling rate below 540°C (1000°F) may be used.
    Temper: Triple temper at 540°C (1000°F) or higher. Hold at least 2 hours at temperature for each temper. Air cool to room temperature between tempers.

PROPRIETARY CPM Rex T15(HS) Mechanical Properties

Temperature

PROPERTY / VALUE
Brinell Hardness (HB)
245 — 275
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Rockwell Hardness (HR)
54 — 68
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Impact Energy
val1
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J
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PROPRIETARY CPM Rex T15(HS) International Equivalent Materials

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MATERIAL
STANDARD
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
MATERIAL
CPM Rex T15
STANDARD
PROPRIETARY
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
Composition 100%

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  • 2Cross References
  • 12Composition
  • 56Mechanical Properties
  • 8Physical Properties
  • 2Heat Treatment
  • 1Metallography
  • -Machinability
  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep
  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology
  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
  • 3Total Suppliers