PROPRIETARY CarTech Super Invar 32-5 Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels
Country / Standard: PROPRIETARY

Data updates

Latest Update: 2019-07
Total number of updates: 2
Update History
2016-02

This material has 26 properties — only a subset is shown here.

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PROPRIETARY CarTech Super Invar 32-5 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.02
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Co
VALUE
5.50
UNIT
%
CAS NUMBER
7440-48-4
CRITERIA
Fe
VALUE
Balance
UNIT
%
CAS NUMBER
7439-89-6
CRITERIA
Mn
VALUE
val1
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UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Ni
VALUE
val1
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UNIT
%
CAS NUMBER
7440-02-0
CRITERIA
Si
VALUE
val1
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UNIT
%
CAS NUMBER
7440-21-3

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PROPRIETARY CarTech Super Invar 32-5 Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
145 — 210 GPa
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Electrical Resistivity
0.8 Ω∙mm²/m
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Density
7.67 — 8.138 kg/dm³
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Electrical Conductivity
val1
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S/m
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Poisson Coefficient
val1
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This material has 26 properties — only a subset is shown here.

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PROPRIETARY CarTech Super Invar 32-5 Heat Treatments

  • The recommended heat treating practice for lowest thermal expansion and optimum stability is to heat at 843°C (1550°F) for 1 hour, water quench, followed by a stress relieving operation at 316°C (600°F) for 1 hour, air cool and age at 93°C (200°F) for 24 hours, then air cool.

    Because this alloy oxidizes readily at heat treating temperatures above about 538°C (1000°F), it is recommended parts be heat treated in a protective environment such as vacuum, hydrogen, dissociated ammonia, or inert gases.

    Annealing: Heat to 790°C (1450°F) and hold at heat 30 minutes per inch of thickness, then air cool. Heating to temperatures above 538°C (1000°F) relieves the presence of cold work stresses. The higher the temperature, the lower the annealed hardness.

    Suggested forging temperature is 1093-1177°C (2000-2150°F).

PROPRIETARY CarTech Super Invar 32-5 Mechanical Properties

Temperature

PROPERTY / VALUE
Tensile Strength
483 MPa
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Elongation, A
40 %
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Rockwell Hardness (HR)
val1
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Yield Strength, Rp0.2
276 MPa
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  • 2Cross References
  • 6Composition
  • 5Mechanical Properties
  • 9Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability
  • 1Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep
  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology
  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
  • 2Total Suppliers