ASME SA-540 Grade B23 Class 1 Structural and constructional steels

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 2020-10 2016-02

This material has 199 properties — only a subset is shown here.

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ASME SA-540 Grade B23 Class 1 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.37 – 0.44
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
0.65 – 0.95
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
0.60 – 0.95
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

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-540 Grade B23 Class 1 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
val1
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Coefficient of Thermal Expansion (CTE)
val1
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10-6/°C
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Thermal Conductivity
36.3 W/(m∙°C)
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This material has 199 properties — only a subset is shown here.

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ASME SA-540 Grade B23 Class 1 Heat Treatments

  • Material which is ordered in the annealed condition shall have a structure suitable for machining.
    Material which is ordered in the liquid quenched and tempered condition shall be uniformly reheated from a temperature below the cooling transformation range to the proper austenitizing temperature. It shall be quenched in a liquid medium under substanially uniform conditions and then uniformly reheated for tempering. The minimum tempering temperature shall be 455°C (850°F).
    Material that has been straightened after quenching and tempering shall be stress relieved by reheating to a temperature not lower than 55°C (100°F) under the tempering temperature.

ASME SA-540 Grade B23 Class 1 Mechanical Properties

Temperature

PROPERTY / VALUE
Yield Strength, Rp0.2
val1
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MPa
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Tensile Strength
1140 MPa
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Elongation, A
10 %
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Reduction of Area
val1
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%
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Brinell Hardness (HB)
235
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  • 50 Cross References
  • 8 Composition
  • 51 Mechanical Properties
  • 68 Physical Properties
  • 1 Heat Treatment
  • - Metallography
  • - Machinability
  • - Stress-Strain
  • - Formability
  • - Fatigue
  • - Fracture
  • 14 Creep
  • - Joints
  • - Coatings
  • 4 Dimensions
  • - Tribology
  • - Corrosion
  • - Ageing
  • - Weatherability
  • - Irradiation
  • 3 Total Suppliers