ASME SA-369 FP91 Type 2 Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels

Country / Standard: United States / ASME

Data updates

Latest Update: 2026-01

Total number of updates: 4

Update History

2024-01 2023-10 2019-11

This material has 185 properties — only a subset is shown here.

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ASME SA-369 FP91 Type 2 Chemical Composition

CRITERIA

VALUE

UNIT

CAS NUMBER

CRITERIA

VALUE

≤ 0.020

UNIT

CAS NUMBER

7429-90-5

CRITERIA

VALUE

≤ 0.010

UNIT

CAS NUMBER

7440-38-2

CRITERIA

VALUE

≤ 0.001

UNIT

CAS NUMBER

7440-42-8

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-44-0

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-47-3

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

7727-37-9; 17778-88-0

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-03-1

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

7440-36-0

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-21-3

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-31-5

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-32-6

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-62-2

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-33-7

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-67-7

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-369 FP91 Type 2 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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Thermal Conductivity

22.3 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 185 properties — only a subset is shown here.

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ASME SA-369 FP91 Type 2 Heat Treatments

Normalized and tempered by reheating within the temperature range from 1040 to 1080°C (1900 to 1975°F), followed by air cooling and tempering in the temperature range of 730 to 800°C (1350 to 1470°F).
After weld repair, this material should be heat treated at 730 - 800°C (1350 - 1470°F).

ASME SA-369 FP91 Type 2 Mechanical Properties

Temperature

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

PROPERTY / VALUE

Tensile Strength

≥ 585 MPa

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Elongation, A

val1 %

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Yield Strength, Rp0.2

val1 MPa

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ASME SA-369 FP91 Type 2 International Equivalent Materials

Showing 13 of 16 results.

MATERIAL

STANDARD

COUNTRY / PRODUCER

EQUIVALENCE CATEGORY

MATERIAL

A 369 Grade FP91 Type 2

STANDARD

ASTM

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Official

MATERIAL

A 234 Grade WP91 Type 2

STANDARD

ASTM

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Composition 100%

MATERIAL

A 335 Grade P91 Type 2

STANDARD

ASTM

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Composition 100%

MATERIAL

SA-182 F 91 Type 2

STANDARD

ASME

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Composition 100%

MATERIAL

SA-213 Grade T91 Type 2

STANDARD

ASME

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Composition 100%

MATERIAL

SA-234 Grade WP91 Type 2

STANDARD

ASME

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Composition 100%

MATERIAL

A 336 Grade F91 Type 2

STANDARD

ASTM

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Composition 100%

MATERIAL

A 213 Grade T91 Type 2

STANDARD

ASTM

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Composition 100%

MATERIAL

A 182 F 91 Type 2

STANDARD

ASTM

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Composition 100%

MATERIAL

SA-335 Grade P91 Type 2

STANDARD

ASME

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Composition 100%

MATERIAL

SA-336 Grade F91 Type 2

STANDARD

ASME

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Composition 100%

MATERIAL

SA-387 Grade 91 Type 2

STANDARD

ASME

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Composition 100%

MATERIAL

AF91G

STANDARD

COUNTRY / PRODUCER

China

EQUIVALENCE CATEGORY

Composition 100%

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

Need the full list of 16 international equivalents?

See all 16 equivalent grades with detailed mapping by standard, producer and equivalence category.

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16Cross References

20Composition
41Mechanical Properties
68Physical Properties
1Heat Treatment
-Metallography
-Machinability

-Stress-Strain
1Formability
-Fatigue
-Fracture
22Creep

-Joints
-Coatings
16Dimensions
-Tribology

-Corrosion
-Ageing
-Weatherability
-Irradiation

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