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Hastelloy X

Material: Hastelloy X, UNS N06002, 2.4665
Hastelloy X is a nickel-based alloy with good oxidation and corrosion resistance, medium and long-lasting strength below 900°C, and good cold and hot processing formability and welding performance. It is suitable for manufacturing combustion chamber and other high-temperature components of aircraft engines, with long-term use below 900°C and short-term working temperature reaching 1080°C.
Availability:
What Is Hastelloy X?

Hastelloy X (UNS N06002) is a nickel-chromium-iron-molybdenum superalloy designed for extreme high-temperature and corrosive environments. Developed by Haynes International, it combines oxidation resistance, creep strength, and fabricability for applications exceeding 1,000°C (1,832°F).

Hastelloy X Composition

Grade

C≤

Mn≤

P≤

S≤

Si≤

Cr

Mo

Fe

Co≤

Ni

W

Hastelloy X

0.05-0.15

1.0

0.04

0.03

1.0

20.5-23.0

8.0-10.0

17.0-20.0

0.5-2.5

Remain

0.2-1.0


Hastelloy X Physical Properties

Properties

Value

Density (g/cm3)

8.28

Melting point (℃)

1295, 1381

Thermal conductivity ( λ (W/m*℃) )

13.38  (100℃)

Specific heat capacity (J/kg*℃)

372.6

Elastic modulus (GPa)

199

Resistivity (μΩ*m)

1.18

Linear expansion coefficient (a/10-6 -1)

12.1 (20-100℃)


Hastelloy X Mechanical Properties

Mechanical properties

Tensile, min, ksi[MPa]

Yield, min, ksi[MPa]

Elongation, %(min)

Hastelloy X

95[655]

32[240]

35


Hastelloy X Equivalent Grades

STANDARD

WERKSTOFF NR.

UNS

Hastelloy X

2.4665

N06002


Hastelloy X Features

  1. Hastelloy X possesses an exceptional combination of oxidation resistance, formability and high temperature strength.

  2. It has also been found to be exceptionally resistant to stress-corrosion cracking.

  3. Alloy X exhibits good ductility after prolonged exposure at temperatures of 1200, 1400, 1600 °F for 16,000 hours.

  4. It has excellent formability and welding characteristics.

  5. Hastelloy X can be forged and, because of its good ductility, can be cold-worked.

  6. It can be welded by both manual and automatic welding methods including shielded metal-arc (coated electrodes), gas tungsten-arc (TIG), and gas metal-arc (MIG). Alloy X can also be resistance-welded.

Hastelloy X Specifications

Product Name

Standard

Show

Pipe/Tube

AMS 5587 AMS 5588 ASTM B619 ASTM B622

Hastelloy X Pipes and Tubes

Sheet/Plate

ASTM B435

Hastelloy X Sheets and Plates

Bar /Rod

ASTM B572

Hastelloy X Bars

Forging

AMS 5754 GE B50TF31

Hastelloy X Forging

Fittings

ASTM B366

Hastelloy X Fittings

Weld Wire

A5.14 ERNiCrMo-2

Hastelloy X Weld Wire

Weld Electrode

A5.11 ENiCrMo-2

Hastelloy X Weld Electrode


Hastelloy X Application:

Hastelloy X is widely used in various high temperature environments due to its corrosion resistance in various atmospheres at high temperatures and its excellent high temperature strength.

  • Industrial and aviation steam turbines (combustors, rectifiers, structural covers).

  • Industrial furnace components, support rolls, grids, ribbons and radiant tubes.

  • Spiral tubes in petrochemical furnaces.

  • High temperature gas cooling nuclear reactor.

FAQs

Q1: Is Hastelloy X Magnetic?

A: Hastelloy X (UNS N06002) is non-magnetic in the annealed condition. However, cold working may induce slight magnetism from strain-induced martensite. In most cases the magnetism is almost non-existent.


Q2: Is Hastelloy X Precipitation Hardened?

A: No, Hastelloy X is solid-solution strengthened, NOT precipitation hardened.


Q3: Difference Between Inconel 625 vs Hastelloy X

Property

Hastelloy X (UNS N06002)

Inconel 625 (UNS N06625)

Composition

Ni-Cr-Fe-Mo (+W/Co)

Ni-Cr-Mo-Nb (+Ta)

Key Strengthening

Solid-solution (Mo/W)

Precipitation (Nb/Ta γ'' phase)

Max Service Temp

2200°F (1200°C)

1800°F (980°C)

Creep Strength (982°C)

12,000 psi

7,000 psi

Corrosion Focus

Oxidation/sulfidation resistance

Aqueous corrosion (pitting/Cl⁻)

PREN

~35

~55

Primary Applications

Combustors, furnace hardware

Marine, chemical processing

About Hastelloy X Resource

ASTM B435 pdf preview

ASTM B366 pdf preview

ASTM B622 pdf preview

ASTM B829 pdf preview

JN Alloy Products

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