Hastelloy® X UNS N06002

Hastelloy X is a nickel-based super alloy that possesses excellent resistance to corrosion and excellent strength characteristics at elevated temperatures-up to 2200 degrees Fahrenheit.

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(Nickel Alloy X) Strip, Coil, Foil, Wire, ASTM B435, AMS 5536, MIL-I-45208, MSRR7158, GE B50TF25

Applications of Hastelloy X

  • Aircraft
  • furnace and chemical process components
  • honeycombs
  • gas turbine combustion section components

What is Hastelloy X Strip Coil?

Hastelloy® X is a nickel-chromium-iron-molybdenum alloy that possesses an exceptional combination of oxidation resistance, formability and high temperature strength. It has also been found to be exceptionally resistant to stress-corrosion cracking in petrochemical applications. Alloy X exhibits good ductility after prolonged exposure at temperatures of 1200, 1400, 1600 °F for 16,000 hours. It has excellent formability and welding characteristics.

What is the Chemical Composition of Hastelloy X?

Nickel: Balance
Iron: 17.00-20.00
Chromium: 20.50-23.00
Molybdenum: 8.00-10.00
Cobalt: 0.50-2.50
Tungsten: 0.20-1.00
Carbon: 0.05-0.15 max
Manganese: 1.00 max
Silicon: 1.00 max
Aluminum: 0.50 max
Phosphorus: 0.04 max
Sulfur: 0.08 max
Boron: 0.010 max
Titanium: 0.15 max
Copper: 0.03 max

Physical Properties of Hastelloy X Strip

Density: 0.297 lbs/in3, 8.22 g/cm3

Mean Coefficient of Thermal Expansion: in/in/° F (mm/m/° C):
70 - 212 °F (20 - 100 ° C): 7.7 x 10·6 (13.9)

Thermal Conductivity: BTU-in/h-ft-° F (W/m-° K):
70 ° F (21 ° C): 63 (9.1)

Modulus of Elasticity:KSI (MPa) 29.7 x 103 (205 x 103) in tension

Magnetic Permeability: H = 200 Oersteds:

Annealed: 1.002.

Melting Point: 2470 ° F (1355 ° C)


Coil - Strip, Foil, Ribbon Wire - Profile, Round, Flat, Square

Mechanical Properties at Room Temperature

Annealed Typical

Ultimate Tensile Strength: 95 KSI min (655 MPa min)
Yield Strength: (0.2% offset): 35 KSI min (240 MPa min)
Elongation: 35% min

Properties Tempered

Hastelloy® X can be cold rolled to various tempers. Contact Ulbrich Technical Service for additional information.

Typical Tempered Properties

Nominal 10% Reduction
Ultimate Tensile Strength: 130 KSI nom (896 MPA nom)
Yield Strength: (0.2% offset): 105 KSI nom (724 MPA nom)
Elongation: 22% nom
Hardness: Re 22 nom

Nominal 30% Reduction
Ultimate Tensile Strength: 170 KSI nom (1172 MPA nom)
Yield Strength: (0.2% offset): 145 KSI nom (1000 nom)
Elongation: 7% nom
Hardness: Re 37 nom

Nominal 50% Reduction
Ultimate Tensile Strength: 205 KSI nom (1413 MPA nom)
Yield Strength: (0.2% offset): 190 KSI nom (1310 MPA nom)
Elongation: 3% nom
Hardness: Re 39 nom

Additional Properties

Corrosion Resistance of Hastelloy X Strip

Refer to NACE (National Associate of Corrosion Engineers) for recommendations.

Cold Rolling Finishes of Hastelloy X

#1 - Hot rolled annealed and descaled. It is available in strip, foil and ribbon. It is used for applications where a smooth decorative finish is not required.
#2D - Dull finish produced by cold rolling, annealing and descaling. Used for deep drawn parts and those parts that need to retain lubricants in the forming process. #2B - Smooth finish produced by cold rolling, annealing and descaling. A light cold rolling pass is added after anneal with polished rolls giving it a brighter finish than 2D. #BA - Bright annealed cold rolled and bright annealed
#CBA - Course bright annealed cold rolled matte finish and bright anneal
#2 - Cold Rolled
#2BA- Smooth finish produced by cold rolling and bright annealing. A light pass using highly polished rolls produces a glossy finish. A 2BA finish may be used for lightly formed applications where a glossy finish is desired in the formed part. Polished - Various grit finish for specific polish finished requirements.

* Not all finishes are available for all alloys - Contact Ulbrich Sales for more information.

Wire Finishes

XC - Extra Clean Bright Annealed or Bright Annealed and Cold Rolled Grease - Ultra bright finish (for decorative applications) Soap - Soap coating on tempered wire to act as lubricant.

* Contact Ulbrich Wire for custom wire finishes.

Is Hastelloy X hardenable through heat treating?

Hastelloy® X cannot be hardened heat treating.

Weldability of Hastelloy X

For best results refer to: SSINA's "Welding of Stainless Steels and Other Joining Methods".


Hastelloy® X is a grade of Hastelloy® which is a nickel-molybdenum alloy. There are many different grades of Hastelloy®, which includes X. Grades of Hastelloy® have each been optimized for a specific purpose. Molybdenum makes Hastelloy® harder and stronger at high temperatures. This alloying element and the characteristics it imbues into the material also makes it great for welding applications. These nickel alloys are easily fabricated and formed. They also exhibit good ductility and are able to be cold worked.

All grades of Hastelloy® are considered to be a corrosion resistant alloy because each grade exhibits superior resistance to various corrosive environments. Hastelloy® has outstanding resistance to highly oxidizing corrosives such as oxidizing salts and reducing agents, making it a great alloy to specify for applications used in moderate to severe corrosive environments.

Limitation of Liability and Disclaimer of Warranty: In no event will Ulbrich Stainless Steels & Special Metals, Inc., be liable for any damages arising from the use of the information included in this document or that it is suitable for the 'applications' noted. We believe the information and data provided to be accurate to the best of our knowledge but, all data is considered typical values only. It is intended for reference and general information and not recommended for specification, design or engineering purposes. Ulbrich assumes no implied or express warranty in regard to the creation or accuracy of the data provided in this document.

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