PROPRIETARY 820 Structural and constructional steels

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

Data updates

Latest Update: 2021-02
Total number of updates: 1
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This material has 23 properties — only a subset is shown here.

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PROPRIETARY 820 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.40
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
1.50
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mo
VALUE
0.50
UNIT
%
CAS NUMBER
7439-98-7
CRITERIA
Ni
VALUE
val1
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UNIT
%
CAS NUMBER
7440-02-0

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PROPRIETARY 820 Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 210 GPa
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Density
7.67 — 7.86 kg/dm³
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Poisson Coefficient
0.27 — 0.3
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This material has 23 properties — only a subset is shown here.

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PROPRIETARY 820 Heat Treatments

  • Annealed: Heated to 660°C, slow cooled.
    Quenched and tempered (1): Quenched in air from 875°C; Cold passage at -75°C; Tempered at 200°C.
    Quenched and tempered (2): Quenched in air from 875°C; Tempered at 625°C.

PROPRIETARY 820 Mechanical Properties

Temperature

PROPERTY / VALUE
Tensile Strength
1200 — 1950 MPa
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Brinell Hardness (HB)
285
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Elongation, A
11 — 14 %
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Impact Strength
val1
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kJ/m²
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Yield Strength, Rp0.2
val1
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MPa
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  • -Cross References
  • 4Composition
  • 9Mechanical Properties
  • 7Physical Properties
  • 2Heat Treatment
  • -Metallography
  • -Machinability
  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep
  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology
  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
  • 1Total Suppliers