PROPRIETARY Hastelloy X Nickel Alloys

Material group: Nonferrous Alloys / Nickel Alloys

Country / Standard: PROPRIETARY

Data updates

Latest Update: 2025-10

Total number of updates: 8

Update History

2024-05 2023-02 2021-08 2021-02 2015-12 2015-01 2014-06

This material has 506 properties — only a subset is shown here.

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PROPRIETARY Hastelloy X Chemical Composition

CRITERIA

VALUE

UNIT

CAS NUMBER

CRITERIA

VALUE

≤ 0.5

UNIT

CAS NUMBER

7429-90-5

CRITERIA

VALUE

≤ 0.008

UNIT

CAS NUMBER

7440-42-8

CRITERIA

VALUE

0.1

UNIT

CAS NUMBER

7440-44-0

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-48-4

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-47-3

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7439-89-6

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

7440-21-3

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-32-6

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-33-7

Haynes International, Product Data Sheets,

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PROPRIETARY Hastelloy X Physical Properties

Temperature

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

PROPERTY / VALUE

Modulus of Elasticity

185 — 205 GPa

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Thermal Conductivity

val1 W/(m∙°C)

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Electrical Resistivity

1.15 Ω∙mm²/m

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Density

val1 kg/dm³

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Heat Capacity

val1 J/(kg∙°C)

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Melting Temperature

val1 °C

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Service Temperature

val1 °C

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Dynamic Modulus of Elasticity

val1 GPa

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Electrical Conductivity

val1 S/m

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Poisson Coefficient

val1

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Shear Modulus

val1 GPa

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This material has 506 properties — only a subset is shown here.

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PROPRIETARY Hastelloy X Heat Treatments

Heat treatment of finished parts
Annealed or Spring Temper; Stress Relieve: 400 - 450°C (750 - 840°F), 2 h, air cooling.
Wrought forms are furnished in the solution heat-treated condition unless otherwise specified. X alloy is solution heat-treated at 1177°C (2150°F) and rapid cooled. Bright annealed products are cooled in hydrogen. Annealing at temperatures lower than the solution heat- treating may cause precipitation of secondary phases, which may affect the alloy’s strength and ductility.

PROPRIETARY Hastelloy X Mechanical Properties

Temperature

≤ 0°C 0 - 30°C ≥ 300°C

PROPERTY / VALUE

Tensile Strength

721 — 1550 MPa

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Elongation, A

val1 %

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Grain Size

val1

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Impact Energy

val1 J

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Rockwell Hardness (HR)

val1

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Yield Strength, Rp0.2

val1 MPa

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PROPRIETARY Hastelloy X International Equivalent Materials

Showing 15 of 149 results.

MATERIAL

STANDARD

COUNTRY / PRODUCER

EQUIVALENCE CATEGORY

MATERIAL

ERNiCrMo-2

STANDARD

AWS

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Official

MATERIAL

SB-435 N06002

STANDARD

ASME

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Official

MATERIAL

SB-622 N06002

STANDARD

ASME

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Official

MATERIAL

SB-626 N06002

STANDARD

ASME

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Official

MATERIAL

SB-572 N06002

STANDARD

ASME

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Official

MATERIAL

B 435 N06002

STANDARD

ASTM

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Official

MATERIAL

B 622 N06002

STANDARD

ASTM

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Official

MATERIAL

B 619 N06002

STANDARD

ASTM

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Official

MATERIAL

B 626 N06002

STANDARD

ASTM

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Official

MATERIAL

NiCr21Fe18Mo9

STANDARD

ISO

COUNTRY / PRODUCER

International

EQUIVALENCE CATEGORY

Composition 100%

MATERIAL

NiCr21Fe18Mo9

STANDARD

JIS

COUNTRY / PRODUCER

Japan

EQUIVALENCE CATEGORY

Composition 100%

MATERIAL

NW6002

STANDARD

JIS

COUNTRY / PRODUCER

Japan

EQUIVALENCE CATEGORY

Composition 100%

MATERIAL

Hastelloy X

STANDARD

SAE

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Official

MATERIAL

W86002

STANDARD

UNS

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Official

MATERIAL

N06002

STANDARD

UNS

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Official

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 149 equivalent grades with detailed mapping by standard, producer and equivalence category.

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149Cross References

47Composition
90Mechanical Properties
109Physical Properties
2Heat Treatment
2Metallography
-Machinability

10Stress-Strain
-Formability
2Fatigue
-Fracture
5Creep

-Joints
-Coatings
-Dimensions
-Tribology

1Corrosion
-Ageing
-Weatherability
-Irradiation

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