When researchers designed the first molten salt reactor experiment in the 1960s, they discovered that conventional materials couldn't withstand the corrosive environment of liquid fluoride salts at extreme temperatures. The breakthrough solution was Hastelloy N Sheets a specialized nickel-molybdenum-chromium alloy that has since become the material of choice for advanced nuclear reactors, chemical processing, and high-temperature industrial applications worldwide. Aurico Alloys LLP supplies these engineered sheets to chemical, oil & gas, marine, pharmaceutical, and power generation industries.
Table of Contents:
Hastelloy N (UNS N10003, ASTM B434) is uniquely formulated for resistance to molten fluoride salts (the fuel and coolant of next-generation molten salt reactors), achieving documented corrosion rates below 0.0025 mm per year in LiF-BeF₂ fuel salt at 700°C. Its exceptional composition 71% nickel, 16% molybdenum, 7% chromium, 5% iron, plus trace elements delivers outstanding oxidation, carburization, and thermal creep resistance across 705–870°C, with capability extending to thermal storage and concentrated solar power applications.
Aurico Alloys LLP offers Hastelloy N Sheets in various thicknesses and finishes, fully certified to ASTM B434 and ASME SB434 standards with complete mill test documentation and traceability. Our inventory supports critical energy, nuclear, and industrial projects requiring uncompromising material performance.
Choosing Aurico's Hastelloy N Sheets means selecting a material scientifically proven to deliver superior corrosion resistance, mechanical stability, and structural integrity in the world's most demanding high-temperature and molten salt environments.
High-quality Hastelloy N Sheets ready for industrial use.
Specification Overview
| Supplier & Manufacturer | Aurico Alloys LLP |
|---|---|
| Grade | Hastelloy N (UNS N10003) |
| Standards | ASTM B434, ASME SB434, AMS 5607 |
| Thickness Range | 0.1 mm – 25 mm |
| Width Range | 10 – 2000 mm |
| Finishes | Annealed, cold rolled, hot rolled, pickled |
| Forms | Sheets, plates, strips, coils |
| Certification | Full ASTM/ASME certification, mill test certificates, RoHS/REACH compliance |
Equivalent Grades & Standards
| Property | Value |
|---|---|
| UNS number | N10003 |
| Density | 8.86 g/cm3 |
| Melting range | 1300-1400 °C |
| Thermal conductivity (200 °C) | 13.1 W/m·°C |
| Coefficient of expansion (20-200 °C) | 12.3 µm/m·°C |
| Electrical resistivity (20 °C) | 120.5 µΩ·cm |
| Dynamic modulus of elasticity (20 °C) | 219 GPa |
| Plate, sheet and strip specification | ASTM B434 / AMS 5607 |
Identifiers and physical constants for Hastelloy N. A dash means no such designation is published for this grade.
Stock & Product Availability
Aurico Alloys LLP maintains stock of Hastelloy N Sheets in diverse thicknesses and finishes, delivering worldwide support for molten salt reactor projects, chemical processing, energy systems, and specialized high-temperature applications.
Chemical Composition
| Element | Min (%) | Max (%) |
|---|---|---|
| Nickel (Ni) | — | Balance |
| Molybdenum (Mo) | 15 | 18 |
| Chromium (Cr) | 6 | 8 |
| Iron (Fe) | — | 5 |
| Tungsten (W) | — | 0.5 |
| Vanadium (V) | — | 0.5 |
| Aluminium (Al) | — | 0.5 |
| Copper (Cu) | — | 0.35 |
| Cobalt (Co) | — | 0.2 |
| Carbon (C) | — | 0.08 |
| Manganese (Mn) | — | 1 |
| Silicon (Si) | — | 1 |
Composition limits for Hastelloy N. These are specification limits for the grade, not measured values for a lot; the mill test certificate supplied with your order states the actual analysis.
Mechanical & Physical Properties
| Property | Typical Values |
|---|---|
| Tensile Strength (MPa) | 690 – 773 |
| Yield Strength (0.2%, MPa) | 310 – 380 |
| Elongation (%) | 45 – 65 |
| Hardness (HB) | 160 – 210 |
| Service Temperature (°C) | 705 – 870 (molten salt); up to 980°C peak |
Applications & Benefits
Why this grade
Hastelloy N is a nickel-molybdenum-chromium alloy developed for molten fluoride salts at the Oak Ridge Molten-Salt Reactor Experiment, and it is still the grade specified for molten fluoride salt and hot hydrofluoric acid service. It is not a general-purpose aqueous corrosion alloy — for acid plant the B and C grades apply.
- Molten salt reactors (MSR) fuel and coolant circuit components primary application
- Concentrated solar power (CSP) thermal storage systems
- Chemical process equipment exposed to extreme oxidation and creep conditions
- Containers and piping for molten fluoride salt processing
- Nuclear thermal systems and next-generation energy infrastructure
- Marine and industrial desalination facilities requiring corrosion resistance
FAQ & Insights
Global Export Destinations
We ship worldwide from Mumbai. See every destination we export to on our export markets page.
Domestic Supply Network
We deliver across India from our Mumbai stockyard. See every city we supply on our supply locations page.
Conclusion
Aurico Alloys LLP's Hastelloy N Sheets represent a pinnacle of engineering material science designed to enable next-generation clean energy and advanced chemical processing in the world's most demanding molten salt, thermal storage, and extreme high-temperature environments. Will you secure your critical next-generation energy and industrial projects with Aurico's scientifically proven Hastelloy N Sheets?