PROPRIETARY SuperDuplex Stainless steels

Material group: Ferrous Alloys / Stainless steels
Country / Standard: PROPRIETARY

Data updates

Latest Update: 2025-06
Total number of updates: 3
Update History
2025-05 2023-07

This material has 229 properties — only a subset is shown here.

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PROPRIETARY SuperDuplex Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
≤ 0.03
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
22.0 – 26.0
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Fe
VALUE
Balance
UNIT
%
CAS NUMBER
7439-89-6
CRITERIA
Mo
VALUE
val1
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UNIT
%
CAS NUMBER
7439-98-7
CRITERIA
N
VALUE
val1
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UNIT
%
CAS NUMBER
7727-37-9; 17778-88-0
CRITERIA
Ni
VALUE
val1
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UNIT
%
CAS NUMBER
7440-02-0

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PROPRIETARY SuperDuplex Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
163 — 200 GPa
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Thermal Conductivity
15 W/(m∙°C)
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Density
≥ 7.8 kg/dm³
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Melting Temperature
val1
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°C
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This material has 229 properties — only a subset is shown here.

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PROPRIETARY SuperDuplex Heat Treatments

  • Solution annealing
    Hold temperature 1100°C, hold time 0.5 h when thoroughly heated, water quenching
  • Heat treatment method used for testing: Under vacuum, heat at 10°C/min to 1 100 °C ± 10 °C, then hold temperature for 30 minutes. Quench in water.

PROPRIETARY SuperDuplex Mechanical Properties

Temperature

PROPERTY / VALUE
Tensile Strength
860 — 1260 MPa
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Elongation, A
12 — 49 %
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Impact Energy
val1
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J
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Vickers Hardness (HV)
val1
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Yield Strength, Rp0.2
560 — 1170 MPa
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  • 145Cross References
  • 17Composition
  • 41Mechanical Properties
  • 22Physical Properties
  • 2Heat Treatment
  • -Metallography
  • -Machinability
  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep
  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology
  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
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