ASME SA-540 Grade B23 Class 4 Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels
Country / Standard: United States / ASME
Indicative price:

Data updates

Latest Update: 2024-02
Total number of updates: 5
Update History
2024-01 2023-11 2020-05 2016-02

This material has 202 properties — only a subset is shown here.

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ASME SA-540 Grade B23 Class 4 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 4 Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 210 GPa
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Thermal Conductivity
36.3 W/(m∙°C)
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Density
val1
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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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This material has 202 properties — only a subset is shown here.

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ASME SA-540 Grade B23 Class 4 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 4 Mechanical Properties

Temperature

PROPERTY / VALUE
Tensile Strength
≥ 930 MPa
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Brinell Hardness (HB)
val1
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Elongation, A
val1
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%
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Reduction of Area
val1
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%
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Yield Strength, Rp0.2
val1
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MPa
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ASME SA-540 Grade B23 Class 4 International Equivalent Materials

Showing 14 of 50 results.

MATERIAL
STANDARD
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
MATERIAL
SA-540 Grade E 4340H Class 4
STANDARD
ASME
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Identical
MATERIAL
A 540 Grade B23 Class 4
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
A 540 Grade E 4340H Class 4
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
SA-540 Grade B23 Class 1
STANDARD
ASME
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
SA-540 Grade B23 Class 2
STANDARD
ASME
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
SA-540 Grade B23 Class 3
STANDARD
ASME
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
SA-540 Grade B23 Class 5
STANDARD
ASME
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
SA-540 Grade E 4340H Class 1
STANDARD
ASME
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
SA-540 Grade E 4340H Class 2
STANDARD
ASME
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
SA-540 Grade E 4340H Class 3
STANDARD
ASME
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
SA-540 Grade E 4340H Class 5
STANDARD
ASME
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
SNB 21-1
STANDARD
JIS
COUNTRY / PRODUCER
Japan
EQUIVALENCE CATEGORY
Implicit
MATERIAL
SNB 23-4
STANDARD
JIS
COUNTRY / PRODUCER
Japan
EQUIVALENCE CATEGORY
Implicit
MATERIAL
SNB 23-4
STANDARD
KS
COUNTRY / PRODUCER
Korea
EQUIVALENCE CATEGORY
Implicit

Equivalence categories reflect chemical-composition and mechanical-property comparison — always verify suitability against the governing specification for your application.

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  • 50Cross References
  • 8Composition
  • 53Mechanical Properties
  • 68Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability
  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • 14Creep
  • -Joints
  • -Coatings
  • 4Dimensions
  • -Tribology
  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
  • 4Total Suppliers