UNS N06002 (Hastelloy X)
Generic Name & Other Designation
UNS N06002, Hastelloy X, Alloy X, Inconel HX, Nickel Alloy X, W.Nr. 2.4665, NiCr21Fe18Mo9
Product Overview
UNS N06002 (Alloy X) is a matrix-stiffened nickel-chromium-iron-molybdenum superalloy recognized across the aerospace and thermal processing industries for over half a century. It offers an ideal combination of creep-rupture strength, resistance to oxidizing atmospheres, and ease of fabrication.
Designed to operate in extreme thermal environments up to 1200°C (2200°F), UNS N06002 maintains structural integrity in combustion chambers, industrial kilns, and high-temperature chemical reactors, resisting both carburizing and nitriding atmospheres.
Key Highlights
✅ Exceptional Thermal Balance: Combines high-temperature strength, oxidation resistance, and fabricability.
✅ Carburization & Nitriding Protection: Resists atmospheric degradation in industrial furnace operations.
✅ Stress-Corrosion Crack Resistance: Highly resistant to stress-corrosion cracking in aerospace and industrial gas turbines.
✅ Ductility Retained After Aging: Maintains high ductility even after prolonged exposure to temperatures above 800°C.
Chemical Composition & Physical Properties
Chemical Composition (wt%)
Element | Ni | Cr | Fe | Mo | Co | W | C | Si | Mn |
Min (%) | Bal. | 20.5 | 17.0 | 8.0 | 0.5 | 0.2 | 0.05 | – | – |
Max (%) | (~47.0) | 23.0 | 20.0 | 10.0 | 2.5 | 1.0 | 0.15 | 1.0 | 1.0 |
Physical & Mechanical Properties
Parameter | Typical Value (Solution Annealed) |
Density | 8.22 g/cm³ |
Melting Range | 1260°C – 1355°C |
Tensile Strength (Rm) | ≥ 750 MPa |
Yield Strength (0.2%, Rp0.2) | ≥ 310 MPa |
Elongation (A5) | ≥ 35% |
Available Forms
Aerospace Sheet & Plate: Precision AMS-spec thin sheets, heavy structural plates.
Round Bar & Billet: Forging stock, turbine shaft bars, fastener stock.
Seamless Pipe & Tube: Combustor liner tubes, transition ducts, heat exchanger piping.
Wire & Welding Rod: TIG/MIG filler wire for high-temperature joinery.
Typical Application Scenarios
Aerospace Gas Turbines: Combustion cans, transition ducts, flame holders, and tailpipes.
Industrial Gas Turbines: Combustor liners, fuel nozzles, and rotor hardware.
Industrial Heating: Furnace retorts, roller hearths, structural grid trays, and baffle plates.
Petrochemical Plants: Pyrolysis tubing, catalyst grid supports, and reformer hardware.
Quality Assurance & Testing
AMS and ASTM specification compliance with full mechanical and chemical certifications.
High-temperature stress-rupture testing and grain boundary examination.
Liquid penetrant (PT) and radiographic (RT) inspection for aerospace-grade compliance.
Supplier Information (BELNADE)
As a specialist in heat-resistant and aerospace-grade alloys, BELNADE delivers UNS N06002 materials tailored to stringent international standards. BELNADE supports customers with precision cutting, heat treatment guidance, and scheduled just-in-time (JIT) deliveries.
Partner with BELNADE for High-Temperature Alloy Solutions.
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