MIL S-15464B Class 1 Cast steels

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

Data updates

Latest Update: 2014-10
Total number of updates: 1
Update History

This material has 16 properties — only a subset is shown here.

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MIL S-15464B Class 1 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
≤ 0.2000
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
1.0000 – 1.5000
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Cu
VALUE
≤ 0.5000
UNIT
%
CAS NUMBER
7440-50-8
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
Si
VALUE
val1
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UNIT
%
CAS NUMBER
7440-21-3

MIL-S-15464B: 1953 / Steel alloy, chromium-molybdenum; castings

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MIL S-15464B Class 1 Heat Treatments

  • Annealing: heated to 10-65°C (50-150°F) above the upper critical point, cooled in the furnace to 399°C (750°F), after which the cooling rate of the furnace may be accelerated. When the temperature of the hottest part of the charge has fallen to 260°C (500°F), the castings may be removed from the furnace and cooled in still air; Normalizing: heated to and held at a temperature of at least 38°C (100°F) above the upper critical point. Castings shall then be removed from the furnace and permitted to cool through the critical range in air; Tempering: heating uniformly at a controlled rate to 593-704°C (1100-1300°F). Mechanical properties of normalized or quenched castings shall be determined after tempering; Stress relief heat treatment - shall be at least 16°C (60°F) but not more than 38°C (100°F) below the tempering temperature; Homogenization: heated to 1010 to 1288°C (1850 to 2350°F) and shall be held at the homogenization temperature a sufficient length of time to minimize harmful heterogeneity by diffusion. The castings shall then be withdrawn to cool through the critical range.

MIL S-15464B Class 1 Mechanical Properties

Temperature

PROPERTY / VALUE
Tensile Strength
≥ 483 MPa
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Elongation, A
≥ 20 %
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Reduction of Area
val1
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%
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Yield Strength, Rp0.2
≥ 276 MPa
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  • 2Cross References
  • 9Composition
  • 4Mechanical Properties
  • -Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability
  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep
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