PROPRIETARY ExELL A-2 Tool steels

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

Data updates

Latest Update: 2018-07
Total number of updates: 2
Update History
2018-05

This material has 38 properties — only a subset is shown here.

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PROPRIETARY ExELL A-2 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
1.00
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
5.25
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
0.60
UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Mo
VALUE
val1
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UNIT
%
CAS NUMBER
7439-98-7
CRITERIA
Si
VALUE
val1
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UNIT
%
CAS NUMBER
7440-21-3
CRITERIA
V
VALUE
val1
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UNIT
%
CAS NUMBER
7440-62-2

Ellwood Specialty Steel, Product Data Sheets,

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PROPRIETARY ExELL A-2 Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
186.2 — 210 GPa
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Density
val1
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kg/dm³
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Heat Capacity
val1
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J/(kg∙°C)
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Thermal Conductivity
25.961 W/(m∙°C)
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Poisson Coefficient
val1
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This material has 38 properties — only a subset is shown here.

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PROPRIETARY ExELL A-2 Heat Treatments

  • Annealing: With a protective atmosphere or vacuum furnace, heat slowly to 1530°F (832°C). Equalize and hold one hour per inch of thickness. Furnace cool 20°F (11°C)/hr to 1000°F (538°C) and equalize. Air cool to room temperature. Hardness - 217 HB max.
    Stress Relieving: To minimize movement during heat treatment, a stress relieve can be used between the rough and finish machine operations of tool making before heat treatment. After rough machining, heat the part(s) to 1200°F (649°C), equalize and hold 1-2 hours. Furnace cool to 900°F (482°C) and then air cool.
    Preheating: Heat to 1200 - 1250°F (649 - 677°C) and equalize. Continue heating to hardening temperature.
    Hardening: Protect against oxidation and decarburization. Austentizing (hardening) temperature range is 1700 - 1720°F (927 - 938°C) but hardening is usual at 1740°F (949°C). Typical response is:
    Hardening temperature 1700°F (927°C), Hold time 40 min, As-quenched hardness 62 HRC.
    Hardening temperature 1740°F (949°C), Hold time 30 min, As-quenched hardness 63 HRC.
    Hardening temperature 1775°F (968°C), Hold time 20 min, As-quenched hardness 63 HRC.
    Quenching: Typical quenching media include: Circulating air or atmosphere; Forced air or gas; Step quench; Oil.
    Tempering: Immediately after quenching to about 150°F (66°C). Temper at least two times with a minimum 2 hours time for each temper. Typical tempering temperature responses are (based on required hardness):
    Tempering temperature: 500°F (260°C), Hardness 58 HRC (Austenitized 1740°F (949°C));
    Tempering temperature: 975°F (523°C), Hardness 55 HRC (Austenitized 1740°F (949°C));
    Tempering temperature: 1000°F (538°C), Hardness 53 HRC (Austenitized 1740°F (949°C));
    Tempering temperature: 1025°F (552°C), Hardness 52 HRC (Austenitized 1740°F (949°C)).

PROPRIETARY ExELL A-2 Mechanical Properties

Temperature

PROPERTY / VALUE
Tensile Strength
723.9 — 1758.2 MPa
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Compression Strength
1999.5 — 2861.3 MPa
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Compression Yield Strength
val1
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MPa
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Rockwell Hardness (HR)
val1
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Yield Strength, Rp0.2
358.5 — 1379 MPa
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  • 4Cross References
  • 6Composition
  • 16Mechanical Properties
  • 10Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability
  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep
  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology
  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
  • 1Total Suppliers