MIL 17-4 PH Stainless steels

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

Data updates

Latest Update: 2022-11
Total number of updates: 5
Update History
2020-11 2020-07 2019-03 2014-10

This material has 95 properties — only a subset is shown here.

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MIL 17-4 PH Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
≤ 0.0700
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
15.5000 – 17.5000
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Fe
VALUE
69.9100 – 78.3500
UNIT
%
CAS NUMBER
7439-89-6
CRITERIA
Mn
VALUE
val1
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UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Nb
VALUE
val1
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UNIT
%
CAS NUMBER
7440-03-1
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-C-24111B / Chromium-nickel alloy steel bars, rods and forgings, corrosion resistant

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MIL 17-4 PH 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 95 properties — only a subset is shown here.

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MIL 17-4 PH Heat Treatments


  • Solution treatment: at 1900°F; ; For applications where stress corrosion cracking is a possibility, material should be aged at the highest temperature compatible with the strength requirements and a temperature not lower than 1000°F (wrought), 935°F (cast) and not less than four hours hold time; For sheet and strip, hold 3 min. plus 1 min. for each 0.01 inch thickness. Hold for a time commensurate with thickness and heating equipment and procedure used. Medium for quenching: oil, water or polymer below 90°F; Homogenization of casting, 2100°F, air cooled to below 90°F prior to solution treatment.

MIL 17-4 PH Mechanical Properties


Temperature

PROPERTY / VALUE
Tensile Strength
≥ 896 MPa
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  • 9Cross References

  • 9Composition
  • 10Mechanical Properties
  • 3Physical Properties
  • 1Heat Treatment
  • 3Metallography
  • -Machinability

  • 29Stress-Strain
  • -Formability
  • 23Fatigue
  • 7Fracture
  • 1Creep

  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology

  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation

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