When a chemical plant faced a sudden upgrade in its processing environment, the use of standard stainless steels led to corrosion failures and costly downtime. The team turned to Hastelloy N Round Bars for their high performance against aggressive acids and oxidizers. Such materials have since become the backbone of safety-critical systems across sectors demanding extreme resistance like oil & gas, marine, pharma, and power generation. Aurico Alloys LLP’s Hastelloy N bars are trusted by engineers, procurement specialists, and fabricators worldwide to ensure long-term durability and compliance with international standards.
Table of Contents:
Hastelloy N (UNS N10003, ASTM B573) is a nickel-based alloy that offers excellent stability, oxidation resistance, and corrosion resistance in high-temperature, chloride-rich environments. Its chemistry excludes nickel molybdenum alloys, favoring a unique formulation that resists stress corrosion cracking even in the harshest chemical streams such as hydrochloric acid and strongly oxidizing media. Its thermal stability and high strength make this alloy ideal for heat exchangers, reactor liners, and piping systems that handle aggressive chemicals under extreme conditions.
Aurico Alloys LLP offers Hastelloy N Round Bars in diameters from 6mm up to 250mm, available with certified test reports, traceability, and ready for immediate installation. These bars support OEMs, OEMs, hardware stores, and plant operators seeking reliable, high-end alloys that meet ASTM B573, and NACE MR0175 standards, ensuring safety and durability for critical infrastructure.
The following details provide a comprehensive insight into Hastelloy N’s technical attributes covering specifications, chemical and mechanical properties, approvals, and applications and are tailored for engineers, procurement managers, and SEO platforms looking for authoritative, optimized content.
High-quality Hastelloy N Round Bars ready for industrial use.
Specification Overview
| Supplier & Manufacturer | Aurico Alloys LLP |
|---|---|
| Grade | Hastelloy N (UNS N10003) |
| Standards | ASTM B573, NACE MR0175, EN 10295, DIN 2.4610 |
| Diameter Range | 6mm – 250mm |
| Length | Custom cut, up to 6000mm |
| Finish | Bright, ground, polished, rough turned, custom |
| Delivery | Stocked, tested, traceable, worldwide export |
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 |
| Rod and bar specification | ASTM B573 / AMS 5771 |
Identifiers and physical constants for Hastelloy N. A dash means no such designation is published for this grade.
Stock & Product Availability
Aurico Alloys LLP supplies Hastelloy N round bars in various finishes, including stock in dimensions 6mm–250mm, ready for immediate shipment with all necessary certifications and traceability support. These bars cater to industries handling corrosive media and high-temperature processes.
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 |
|---|---|
| Tensile Strength | ≥900 MPa |
| Yield Strength | ≥620 MPa |
| Elongation | ≥30% |
| Hardness | ≤250 HB |
| Max Service Temp | Up to 1200°C |
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.
- Chemical: Reactors for acids, distillation columns, and corrosion-resistant piping.
- Marine: Heat exchangers, seawater piping, offshore platforms.
- Oil & Gas: Hydrogen sulfide environments, sour gas pipelines, oil refining equipment.
- Pharma: High-purity reaction vessels, sterilizer components, corrosion-resistant process equipment.
- Power: Exhaust manifolds, furnace components, heat exchangers for high-temperature applications.
- Fabrication/Supply: Trusted OEM stock, high-performance spares, rapid response for critical environments.
FAQ & Search Trends
Global Export Destinations
We ship worldwide from Mumbai. See every destination we export to on our export markets page.
Domestic Supply Network Across India
We deliver across India from our Mumbai stockyard. See every city we supply on our supply locations page.
Conclusion
Hastelloy N Round Bars from Aurico Alloys LLP deliver unmatched corrosion resistance, strength, and reliable certifications, tailored for chemical, marine, oil & gas, pharma, and power applications. By choosing the right material, you ensure long-lasting performance and safer operation. Are you ready to upgrade your facilities with Hastelloy N’s proven durability?