Hastelloy X

Shapes Available

  • Pipe
  • Plate
  • Round Bar
  • Sheet
  • Tubing


  • Aerospace
  • Manufacturing
  • Natural Gas
  • Oil Refining

Industry Names

  • Hastelloy X
  • X
  • Hast X
  • Alloy X


  • Exotic
  • Specialty Steel


  • AMS 5754


  • Aircraft Parts
  • Furnace Rolls
  • Jet Engine Tailpipes


  • Good Ductility
  • High Fatigue Strength
  • High Temperature Strength

Hastelloy X is one of the most widely used nickel-based alloys. This is due to its high resistance to oxidation and high temperature strength. Hastelloy X is also known as Alloy “X”. This alloy is commonly used in gas turbine engine components, furnace applications. In addition, Alloy X is good for any type of combustion zone sections such as tailpipes, cabin heaters and heat-treating equipment. Is Hastelloy X and Alloy X the same? Yes, alloy X and Hastelloy X are the same thing, Hastelloy is a tradename and only Haynes International can produce it using that name. Its good resistance to stress-corrosion cracking and carburization make it suitable for petrochemical processing equipment and all types of forming and welding.

Hastelloy alloy X is machinable in the rolled and cast form at low cutting speeds and coolant is required. All rolled forms of Hastelloy X are provided in the solution heat-treated condition. Standard practice heat-treatment is 2150°F followed by rapid cooling.

Alloy X is strong and resistant to oxidation. It is also extremely resistant to stress and corrosion cracking in petro chemical applications. Hastelloy X is easily fabricated and has great forming and welding characteristics. This alloy can also be forged and due to its great ductility Hastelloy X can be cold worked.

Hastelloy X is available in pipe, plate, sheet, tubing, and round bar. Michlin has made a new YouTube on the Hastelloy Alloys, check it out here!

Please contact us to request a quote. We specialize in hard to find material.

We work closely with many manufacturers in the aerospace & defense industry. We work with NADCAP approved heat treaters and testing laboratories. We can supply DFARS compliant material.

Chemical Composition
B- .01
C.05 0.015
Cr20.5 23.0
Fe17.0 20.0
Mn- 1.00
Mo8.00 10.00
Ni- Bal
P- .04
S- .03
Si- 1.0
W.2 1.0
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