MIL S-860B Grade G Stainless steels
Material group:
Ferrous Alloys / Stainless steels
Country / Standard:
United States / MIL
Data updates
Latest Update: 2015-05
Total number of updates: 1
Update History
This material has 20 properties — only a subset is shown here.
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MIL S-860B Grade G Chemical Composition
CRITERIA
VALUE
UNIT
CAS NUMBER
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
≤ 1.0000
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
Si
VALUE
val1
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UNIT
%
CAS NUMBER
7440-21-3
MIL-S-860B: 1966 / Steel forgings for steam turbine rotors
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MIL S-860B Grade G Physical Properties
Temperature
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 S-860B Grade G Heat Treatments
- Heat treatment shall consist of quenching and tempering or normalizing and tempering. No straightening by any means is permissible after heat treatment form mechanical properties. Minimum tempering temperatures 1200°F (649°C). After heat treatment for mechanical properties and prior to heat stability testing, the forgings shall be rough machined completely and then stress relieved at a temperature 50°F (10°C) to 100°F(38°C). Below the final tempering temperature the forging shall be held at the stress relief temperature for a period of 2h per inch of maximum redial thickness.
MIL S-860B Grade G Mechanical Properties
Temperature
Tensile Strength
≥ 655
MPa
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Elongation, A
≥ 18
%
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Impact Energy
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Reduction of Area
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Yield Strength, Rp0.2
≥ 483
MPa
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- 3Cross References
- 8Composition
- 5Mechanical Properties
- 3Physical Properties
- 1Heat Treatment
- -Metallography
- -Machinability
- -Stress-Strain
- -Formability
- -Fatigue
- -Fracture
- -Creep
- -Joints
- -Coatings
- -Dimensions
- -Tribology
- -Corrosion
- -Ageing
- -Weatherability
- -Irradiation
- -Total Suppliers