ASME SA-540 Grade B24 Class 3 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 2020-05 2016-02

This material has 192 properties — only a subset is shown here.

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ASME SA-540 Grade B24 Class 3 Chemical Composition

CRITERIA

VALUE

UNIT

CAS NUMBER

CRITERIA

VALUE

0.37 – 0.44

UNIT

CAS NUMBER

7440-44-0

CRITERIA

VALUE

0.70 – 0.95

UNIT

CAS NUMBER

7440-47-3

CRITERIA

VALUE

0.70 – 0.90

UNIT

CAS NUMBER

7439-96-5

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7439-98-7

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-02-0

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7723-14-0

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7704-34-9

CRITERIA

VALUE

val1

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 B24 Class 3 Physical Properties

Temperature

0 - 30°C 30 - 100°C 100 - 300°C ≥ 300°C

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 10^-6/°C

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Thermal Conductivity

36.3 W/(m∙°C)

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This material has 192 properties — only a subset is shown here.

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ASME SA-540 Grade B24 Class 3 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 B24 Class 3 Mechanical Properties

Temperature

≤ 0°C 0 - 30°C 30 - 100°C 100 - 300°C ≥ 300°C

PROPERTY / VALUE

Yield Strength, Rp0.2

val1 MPa

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Tensile Strength

1000 MPa

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Elongation, A

12 %

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Reduction of Area

val1 %

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Brinell Hardness (HB)

235

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40 Cross References

8 Composition
53 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

4 Total Suppliers