ASME SA-541 Grade 22 Class 3 Structural and constructional steels

Alternative designations: 2 1/4Cr-1Mo
Material group: Ferrous Alloys / Structural and constructional steels
Country/Standard: United States / ASME

Data updates

Latest Update: 2024-02
Total number of updates: 5
Update History
2024-01 2023-11 2023-10 2020-10

ASME SA-541 Grade 22 Class 3 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.11 – 0.15
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
2.00 – 2.50
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
0.30 – 0.60
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

ASME Boiler and Pressure Vessel Code An International Code Section II - Part A Ferrous Material Specifications / American Society of Mechanical Engineers / 2025

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ASME SA-541 Grade 22 Class 3 Physical Properties

Temperature

≤ 0°C
0 - 30°C
30 - 100°C
100 - 300°C
≥ 300°C
PROPERTY / VALUE
Modulus of Elasticity val1
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GPa Unlock full details
Density 7.67 — 7.86 kg/dm³ Unlock full details
Poisson Coefficient val1
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Coefficient of Thermal Expansion (CTE) val1
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10-6/°C Unlock full details
Thermal Conductivity 36.3 W/(m∙°C) Unlock full details

This material has 190 properties — only a subset is shown here.

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ASME SA-541 Grade 22 Class 3 Heat Treatments

  • After complete austenitization, the forgings shall be quenched in a suitable liquid medium by spraying or immersion. Quenching shall be followed by tempering at a subcritical temperature and holding at this temperature for a minimum time of 30 min/25 mm of maximum section thickness. Minimum tempering temperatures shall be 650°C (1200°F).

ASME SA-541 Grade 22 Class 3 Mechanical Properties

Temperature

≤ 0°C
0 - 30°C
30 - 100°C
100 - 300°C
≥ 300°C
PROPERTY / VALUE
Yield Strength, Rp0.2 380 MPa Unlock full details
Tensile Strength 585 — 760 MPa Unlock full details
Elongation, A 18 % Unlock full details
Reduction of Area val1
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% Unlock full details

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  • 10 Cross References
  • 9 Composition
  • 36 Mechanical Properties
  • 85 Physical Properties
  • 1 Heat Treatment
  • - Metallography
  • - Machinability
  • 1 Stress-Strain
  • - Formability
  • - Fatigue
  • - Fracture
  • 48 Creep
  • - Joints
  • - Coatings
  • - Dimensions
  • - Tribology
  • - Corrosion
  • - Ageing
  • - Weatherability
  • - Irradiation
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