GB 20Cr12NiMoV Stainless steels

Material group: Ferrous Alloys / Stainless steels
Country / Standard: China / GB

Data updates

Latest Update: 2024-11
Total number of updates: 1
Update History

This material has 37 properties — only a subset is shown here.

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GB 20Cr12NiMoV Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
Al
VALUE
≤ 0.025
UNIT
%
CAS NUMBER
7429-90-5
CRITERIA
C
VALUE
0.17 – 0.23
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
10.00 – 12.50
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
val1
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UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Mo
VALUE
val1
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UNIT
%
CAS NUMBER
7439-98-7
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
CRITERIA
V
VALUE
val1
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UNIT
%
CAS NUMBER
7440-62-2

GB/T 44148.2: 2024 / Steel forgings and rolled or forged bars for pressure equipments - Part 2: Low - alloy and alloy (Mo, Cr and CrMo) steels with specified elevated temperature properties

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GB 20Cr12NiMoV 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 37 properties — only a subset is shown here.

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GB 20Cr12NiMoV Heat Treatments


  • Normalizing and tempering, quenching and tempering:
    Austenitizing at 1020 - 1070°C cooling in air, quenching in oil or water and tempering at 730 - 780°C.

GB 20Cr12NiMoV Mechanical Properties


Temperature

PROPERTY / VALUE
Tensile Strength
700 — 850 MPa
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Elongation, A
≥ 14 %
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Impact Energy
val1
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J
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Yield Strength, Rp0.2
≥ 500 MPa
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  • 2Cross References

  • 10Composition
  • 20Mechanical Properties
  • 3Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability

  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • 1Creep

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

  • -Corrosion
  • -Ageing
  • -Weatherability
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