ASME SA-542 Type B Class 4 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: 7

Update History

2024-01 2023-12 2023-11 2023-10 2021-03 2020-10

This material has 391 properties — only a subset is shown here.

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ASME SA-542 Type B Class 4 Chemical Composition

CRITERIA

VALUE

UNIT

CAS NUMBER

CRITERIA

VALUE

0.11 – 0.15

UNIT

CAS NUMBER

7440-44-0

CRITERIA

VALUE

2.00 – 2.50

UNIT

CAS NUMBER

7440-47-3

CRITERIA

VALUE

≤ 0.25

UNIT

CAS NUMBER

7440-50-8

CRITERIA

VALUE

val1

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

CRITERIA

VALUE

val1

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-542 Type B Class 4 Physical Properties

Temperature

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

PROPERTY / VALUE

Modulus of Elasticity

val1 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 391 properties — only a subset is shown here.

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ASME SA-542 Type B Class 4 Heat Treatments

All plates shall be heat treated by heating to a suitable austenitizing temperature, holding for a sufficient period of time to attain uniform temperature throughout the thickness, and quenching in a suitable liquid medium by spraying or immersion. After quenching, plates shall be tempered by heating to a suitable temperature and holding for a period of time of not less than 1.2 minutes/mm of thickness but not less than 1/2 hour. The minimum tempering temperature shall be 650°C (1200°F). Plates over 100 mm in thickness shall receive a prior heat treatment of normalizing at, or water quenching from, a temperature within the range from 900 to 1010°C (1650 to 1850°F). Plates ordered without the heat treatment shall be furnished in either the stress-relieved or the annealed condition. Minimum stress relieving temperature shall be 565°C (1050°F).

ASME SA-542 Type B Class 4 Mechanical Properties

Temperature

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

PROPERTY / VALUE

Yield Strength, Rp0.2

380 MPa

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Tensile Strength

585 — 760 MPa

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Elongation, A

20 %

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Impact Energy

val1 J

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96 Cross References

10 Composition
35 Mechanical Properties
85 Physical Properties
1 Heat Treatment
- Metallography
- Machinability

1 Stress-Strain
- Formability
- Fatigue
- Fracture
48 Creep

- Joints
- Coatings
34 Dimensions
- Tribology

- Corrosion
- Ageing
- Weatherability
- Irradiation

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