PROPRIETARY IN738 Nickel Alloys

Material group: Nonferrous Alloys / Nickel Alloys
Country / Standard: PROPRIETARY

Data updates

Latest Update: 2025-05
Total number of updates: 1
Update History

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PROPRIETARY IN738 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
Al
VALUE
3.5
UNIT
%
CAS NUMBER
7429-90-5
CRITERIA
B+Zr
VALUE
0.1
UNIT
%
CAS NUMBER
CRITERIA
C
VALUE
0.1
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Co
VALUE
val1
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UNIT
%
CAS NUMBER
7440-48-4
CRITERIA
Cr
VALUE
val1
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UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mo
VALUE
val1
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UNIT
%
CAS NUMBER
7439-98-7
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
Ta
VALUE
val1
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UNIT
%
CAS NUMBER
7440-25-7
CRITERIA
Ti
VALUE
val1
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UNIT
%
CAS NUMBER
7440-32-6
CRITERIA
W
VALUE
val1
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UNIT
%
CAS NUMBER
7440-33-7

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PROPRIETARY IN738 Heat Treatments

  • EOS NickelAlloy IN738 is susceptible to formation of macrocracks upon heat treatment, depending on part geometry. Following are recommendations to mitigate the risk of macrocrack formation: (1) shot peening of parts prior to heat treatment; (2) a combined stress relieve and solution treatment plus HIP treatment using pre-pressurization.

PROPRIETARY IN738 Mechanical Properties

Temperature

PROPERTY / VALUE
Tensile Strength
1265 — 1412 MPa
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Elongation, A
4.5 — 9.4 %
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Yield Strength, Rp0.2
val1
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MPa
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  • -Cross References
  • 11Composition
  • 12Mechanical Properties
  • -Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability
  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep
  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology
  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
  • 1Total Suppliers