MIL F-24669/8 Grade G Stainless steels

Material group: Ferrous Alloys / Stainless steels
Country / Standard: United States / MIL

Data updates

Latest Update: 2016-01
Total number of updates: 1
Update History

This material has 20 properties — only a subset is shown here.

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MIL F-24669/8 Grade G Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
As
VALUE
≤ 0.0200
UNIT
%
CAS NUMBER
7440-38-2
CRITERIA
C
VALUE
≤ 0.1500
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
11.5000 – 13.0000
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
P
VALUE
val1
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UNIT
%
CAS NUMBER
7723-14-0
CRITERIA
S
VALUE
val1
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UNIT
%
CAS NUMBER
7704-34-9
CRITERIA
Sb
VALUE
val1
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UNIT
%
CAS NUMBER
7440-36-0
CRITERIA
Si
VALUE
val1
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UNIT
%
CAS NUMBER
7440-21-3
CRITERIA
Sn
VALUE
val1
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UNIT
%
CAS NUMBER
7440-31-5

MIL-F-24669/8: 1991 / Forgings and forging stock, steel for integral steam turbine rotors

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MIL F-24669/8 Grade G Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 215 GPa
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Density
7.61 — 8.1 kg/dm³
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Poisson Coefficient
0.27 — 0.3
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This material has 20 properties — only a subset is shown here.

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MIL F-24669/8 Grade G Heat Treatments

  • Heat treatment shall be consist of quenching and tempering or normalizing and tempering. Multiple heat treatment operations are permitted and may be necessary to archive to required mechanical properties in forgings with large cross sections. Min. tempering temperatures shall be 650°C. Stress relieved with the mechanical property test samples at temperature of 27 to 55°C below the final tempering temperature. The forgings shall be held at the stress relief temperature for a period of 1h per inch of the forging’s maximum radial thickness.

MIL F-24669/8 Grade G Mechanical Properties

Temperature

PROPERTY / VALUE
Tensile Strength
620 — 758 MPa
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Elongation, A
≥ 18 %
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Impact Energy
val1
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J
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Reduction of Area
val1
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%
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Yield Strength, Rp0.2
≥ 482 MPa
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  • -Cross References
  • 11Composition
  • 5Mechanical Properties
  • 3Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability
  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep
  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology
  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
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