ASME SA-350 Grade LF2 Class 1 Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels

Country / Standard: United States / ASME

Indicative price:

Data updates

Latest Update: 2026-01

Total number of updates: 6

Update History

2024-02 2024-01 2023-11 2023-10 2019-05

This material has 8778 properties — only a subset is shown here.

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ASME SA-350 Grade LF2 Class 1 Chemical Composition

CRITERIA

VALUE

UNIT

CAS NUMBER

CRITERIA

VALUE

≤ 0.30

UNIT

CAS NUMBER

7440-44-0

CRITERIA

CEV

VALUE

≤ 0.47

UNIT

CAS NUMBER

CRITERIA

VALUE

≤ 0.30

UNIT

CAS NUMBER

7440-47-3

CRITERIA

Cr+Mo

VALUE

val1

UNIT

CAS NUMBER

CRITERIA

Cr+Mo+Ni+V+Cu

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

7440-03-1

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

7440-21-3

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-350 Grade LF2 Class 1 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 8778 properties — only a subset is shown here.

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ASME SA-350 Grade LF2 Class 1 Heat Treatments

Material shall be furnished in the normalized, or normalized and tempered, or quenched and tempered condition. At the option of the manufacturer, forgings furnished in the quenched and tempered condition may be normalized prior to the austenitize/quench operation.
Quenching shall consist of either: fully austenitizing the forgings followed by quenching in a suitable liquid medium, or a multi-stage process in which the forgings are fully austenitized and rapidly cooled, reheated to partially re-austenitize, and then quenched in a suitable liquid medium. Unless otherwise specified by the purchaser, the method selected shall be at the manufacturer’s option.
Tempering, when required, shall be performed at a minimum temperature of 590°C (1100°F), with a minimum holding time of 30 min/25 mm of maximum thickness, and not less than 30 minutes total.

ASME SA-350 Grade LF2 Class 1 Mechanical Properties

Temperature

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

PROPERTY / VALUE

Tensile Strength

485 — 655 MPa

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Brinell Hardness (HB)

val1

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Elongation, A

val1 %

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Reduction of Area

val1 %

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Yield Strength, Rp0.2

val1 MPa

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ASME SA-350 Grade LF2 Class 1 International Equivalent Materials

Showing 3 of 8 results.

MATERIAL

STANDARD

COUNTRY / PRODUCER

EQUIVALENCE CATEGORY

MATERIAL

A 350 Grade LF2 Class 1

STANDARD

ASTM

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Composition 100%

MATERIAL

SA-350 Grade LF2 Class 2

STANDARD

ASME

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Composition 100%

MATERIAL

A 350 Grade LF2 Class 2

STANDARD

ASTM

COUNTRY / PRODUCER

United States

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 8 international equivalents?

See all 8 equivalent grades with detailed mapping by standard, producer and equivalence category.

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8Cross References

14Composition
41Mechanical Properties
82Physical Properties
1Heat Treatment
-Metallography
-Machinability

1Stress-Strain
-Formability
-Fatigue
-Fracture
50Creep

83Joints
-Coatings
4Dimensions
1Tribology

8491Corrosion
-Ageing
-Weatherability
-Irradiation

2Total Suppliers