ASME SA-234 Grade WPB 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: 6

Update History

2024-01 2023-11 2023-10 2022-04 2019-09

This material has 231 properties — only a subset is shown here.

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ASME SA-234 Grade WPB Chemical Composition

CRITERIA

VALUE

UNIT

CAS NUMBER

CRITERIA

VALUE

≤ 0.30

UNIT

CAS NUMBER

7440-44-0

CRITERIA

CEV

VALUE

≤ 0.50

UNIT

CAS NUMBER

CRITERIA

VALUE

≤ 0.40

UNIT

CAS NUMBER

7440-47-3

CRITERIA

Cr+Cu+Mo+Ni

VALUE

val1

UNIT

CAS NUMBER

CRITERIA

VALUE

val1

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-234 Grade WPB Physical Properties

Temperature

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

PROPERTY / VALUE

Modulus of Elasticity

190 — 210 GPa

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Thermal Conductivity

val1 W/(m∙°C)

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Density

val1 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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This material has 231 properties — only a subset is shown here.

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ASME SA-234 Grade WPB Heat Treatments

Fittings, after forming at an elevated temperature, shall be cooled to a temperature below the critical range under suitable conditions to prevent injurious defects caused by too rapid cooling, but in no case more rapidly than the cooling rate in still air.
Hot-formed fittings upon which the final forming operation is completed at a temperature above 620°C (1150°F) and below 980°C (1800°F) need not be heat treated provided they are cooled in still air.
Fittings shall subsequently be annealed, normalized, or normalized and tempered. Cold-formed fittings, upon which the final forming operation is completed at a temperature below 620°C (1150°F), shall be normalized, or shall be stress relieved at 595 to 690°C (1100 to 1275°F).
Cold-finished bars, for making fittings, reduced in cross-sectional area more than 10% by cold drawing or cold rolling are not acceptable for use in the manufacture of these fittings unless the bars have been either stress relieved in the temperature range of 595 to 675°C (1100 to 1250°F), normalized, normalized and tempered, or annealed.
Minimum tempering temperature shall be 595°C (1100°F).
Liquid quenching followed by tempering shall be permitted when approved by the purchaser.

ASME SA-234 Grade WPB Mechanical Properties

Temperature

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

PROPERTY / VALUE

Tensile Strength

≥ 415 MPa

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Brinell Hardness (HB)

val1

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Elongation, A

val1 %

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Yield Strength, Rp0.2

val1 MPa

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ASME SA-234 Grade WPB International Equivalent Materials

Showing 2 of 6 results.

MATERIAL

STANDARD

COUNTRY / PRODUCER

EQUIVALENCE CATEGORY

MATERIAL

A 234 Grade WPB

STANDARD

ASTM

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Official

MATERIAL

K03006

STANDARD

UNS

COUNTRY / PRODUCER

United States

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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See all 6 equivalent grades with detailed mapping by standard, producer and equivalence category.

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6Cross References

12Composition
47Mechanical Properties
82Physical Properties
1Heat Treatment
-Metallography
-Machinability

3Stress-Strain
-Formability
-Fatigue
-Fracture
61Creep

-Joints
-Coatings
13Dimensions
-Tribology

-Corrosion
-Ageing
-Weatherability
-Irradiation

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