Hastelloy X per DMD 491-23 Nickel Alloy
DMD 491-23 is a Snecma / Safran specification for Hastelloy X. Like many other Tier 1 Aerospace Manufacturers, SAFRAN has quality requirements in sourcing raw material. Fighter Jet Metals works to maintain SNECMA / SAFRAN QUALITY STANDARDS standards for Hastelloy X per DMD 491-23.
HASTELLOY X (UNS N06002) is a nickel-chromium-iron-molybdenum alloy that possesses an exceptional combination of oxidation resistance, fabricability and high-temperature strength. It has also been found to be exceptionally resistant to stresscorrosion cracking in petrochemical applications. X alloy exhibits good ductility after prolonged exposure at temperatures of 1200, 1400, 1600°F (650, 760 and 870°C) for 16,000 hours
Product Forms & Size Range
Fighter Jet Metals supplies Hastelloy X per DMD 491-23 in all major wrought forms required for aerospace and industrial applications
Each product is manufactured in accordance with Safran’s material and traceability standards, ensuring compliance with aerospace quality systems.
HASTELLOY X Round Bar diameters range from 0.125″ to 14.00″ diameter.
Hastelloy X Flat Bar comes in a variety of thicknesses and widths. For more information please request a quote.
HASTELLOY X Plate Thickness ranges from 0.1875″ to 6.50″ Thick.
HASTELLOY X Sheet Thicknesses range from 0.002″ to .150″ Thick.
What Is DMD 491-23?
DMD 491-23 is the official Snecma (Safran Group) specification covering Hastelloy X nickel alloy used in aircraft engines and high-temperature assemblies. It defines the chemical composition, mechanical properties, grain structure, and testing requirements needed to maintain consistency in extreme aerospace environments.
By specifying DMD 491-23, engineers and procurement teams ensure all Hastelloy X materials adhere to Safran’s stringent guidelines for oxidation resistance, durability, and high-temperature performance.
Applications and Industry Uses
Hastelloy X can be used in the construction of heat exchangers for power plants and other energy production facilities. Its good corrosion resistance makes it well-suited for use in environments where heat exchangers are exposed to corrosive gases or liquids.
Hastelloy X can also be used in the construction of boiler components, such as tubes and headers, that are exposed to high temperatures and corrosive environments.
The high temperature strength of Hastelloy X makes it well-suited for use in the construction of turbine blades for gas turbine engines.
Hastelloy X can be used in the construction of fuel cells, which are devices that convert chemical energy into electricity. Its corrosion resistance makes it well-suited for use in fuel cells that are exposed to corrosive gases.
Hastelloy X can be used in the construction of jet engine components, such as blades and vanes, that are exposed to high temperatures and corrosive environments.
Specifications
SHEET & PLATE
Covers Hastelloy X per AMS 5536, defining requirements for sheet, coil, and plate forms used in high-temperature aerospace and industrial components.
BARS & FORGINGS
Specifies Hastelloy X per AMS 5754, governing bars, forgings, and rings for critical service in gas turbines and heat-resistant applications.
GE AVIATION
Outlines GE’s internal standards for nickel-base alloys used in combustion zones, turbine assemblies, and exhaust components.
ROLLS ROYCE
Establishes requirements for Hastelloy X alloys utilized in Rolls-Royce aerospace and power generation systems.
OTHER SPECS
Includes additional proprietary and industrial standards covering corrosion- and heat-resistant nickel alloys for specialized applications.
Certified Material for Critical Service
All Hastelloy X per DMD 491-23 supplied by Fighter Jet Metals is delivered with full test reports, heat numbers, and traceability to specification. We can align production with Safran, OEM, or project-specific quality documentation as required.
On request, Fighter Jet Metals can also coordinate dual certification with related standards such as AMS 5754, AMS 5536, and MSRR 7158, ensuring seamless material integration for multiplatform aerospace programs.