PROPRIETARY Osprey MAR 55 Tool steels

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

Data updates

Latest Update: 2026-01
Total number of updates: 1
Update History

This material has 29 properties — only a subset is shown here.

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PROPRIETARY Osprey MAR 55 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.17
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Co
VALUE
10.00
UNIT
%
CAS NUMBER
7440-48-4
CRITERIA
Cr
VALUE
3.00
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
val1
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UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Mo
VALUE
val1
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UNIT
%
CAS NUMBER
7439-98-7
CRITERIA
Ni
VALUE
val1
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UNIT
%
CAS NUMBER
7440-02-0
CRITERIA
Si
VALUE
val1
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UNIT
%
CAS NUMBER
7440-21-3

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PROPRIETARY Osprey MAR 55 Heat Treatments

  • Ageing: 5 h at 480°C

PROPRIETARY Osprey MAR 55 Mechanical Properties

Temperature

PROPERTY / VALUE
Tensile Strength
1630 — 1910 MPa
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Elongation, A
10 — 17.9 %
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Impact Energy
val1
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J
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Rockwell Hardness (HR)
val1
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Yield Strength, Rp0.2
1355 — 1680 MPa
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  • -Cross References
  • 7Composition
  • 20Mechanical Properties
  • -Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability
  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep
  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology
  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
  • 1Total Suppliers