NB 20Cr2Mn2Mo Structural and constructional steels

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

Data updates

Latest Update: 2018-01
Total number of updates: 1
Update History

This material has 19 properties — only a subset is shown here.

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NB 20Cr2Mn2Mo Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
Al
VALUE
≤ 0.1000
UNIT
%
CAS NUMBER
7429-90-5
CRITERIA
C
VALUE
0.1900 – 0.2500
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
1.8000 – 2.0000
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

NB/T 20006.13: 2012 / Alloy steel for pressurized water reactor nuclear power plants - Part 13: Alloy steel forgings for reactor coolant pump motor shaft assembles

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NB 20Cr2Mn2Mo 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 19 properties — only a subset is shown here.

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NB 20Cr2Mn2Mo Heat Treatments


  • The part shall be delivered in the as-treated condition. This treatment, which is called heat treatment for mechanical properties, shall consist of the following operations:
    - austenitizing,
    - quenching in water or in oil,
    - tempering at a temperature selected so as to obtain the required properties, followed by still air cooling.

NB 20Cr2Mn2Mo Mechanical Properties


Temperature

PROPERTY / VALUE
Tensile Strength
≥ 600 MPa
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Elongation, A
≥ 13 %
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Impact Energy
val1
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J
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Reduction of Area
val1
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%
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Yield Strength, Rp0.2
≥ 500 MPa
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NB 20Cr2Mn2Mo International Equivalent Materials


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MATERIAL
STANDARD
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
MATERIAL
STANDARD
AFCEN
COUNTRY / PRODUCER
France
EQUIVALENCE CATEGORY
Official

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  • 1Cross References

  • 9Composition
  • 5Mechanical Properties
  • 3Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability

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

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

  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation

  • -Total Suppliers