When a leading chemical plant faced relentless corrosion issues in high-temp, acidic environments, traditional stainless steel solutions fell short. The breakthrough came with Hastelloy Round Bars, known for their exceptional ability to withstand harsh corrosive media and extreme temperatures. Their deployment drastically improved plant reliability, minimized downtime, and ensured safety compliance. Now, procurement heads, engineers, and fabricators in chemical, marine, oil & gas, aerospace, power, and industrial sectors rely on Hastelloy for their most demanding applications. Could your critical assets benefit from this high-performance alloy?
Table of Contents:
- What is Hastelloy Round Bars?
- Size Range and Standard Specifications
- Hastelloy Round Bar Grades Supplied
- Equivalent Grades & Designations
- Stock & Availability
- Chemical Composition
- Mechanical Properties
- Common Applications & Uses
- Frequently Searched Terms
- Global Export Countries
- Key Supply Destinations
Hastelloy alloys, especially grades such as B2 (UNS N10665), C276 (UNS N10276), and X (UNS N06002), are nickel-chromium-molybdenum superalloys engineered to excel where corrosion resistance and thermal stability are paramount. These materials resist pitting, crevice corrosion, and stress corrosion cracking even in highly aggressive environments with acids, chlorides, and high-temperature oxidative media, making them ideal for chemical reactors, heat exchangers, and offshore pipelines.
Aurico Alloys LLP supplies Hastelloy round bars globally in sizes from 6mm to 300mm in various finishes such as bright, polished, or custom-forged forms. All products come with ASTM, DIN, EN certification, and batch traceability, ensuring compliance with international standards for the most critical projects in aerospace, marine, oil & gas, and power markets.
What sets Hastelloy apart is its unparalleled resistance to oxidation, crevice corrosion, and high-temperature oxidation, enabling OEMs, fabricators, and hardware stores to deliver components that last longer, operate safer, and perform better under demanding conditions. This makes Hastelloy the material of choice for industries that cannot compromise on safety and durability.
High-quality Hastelloy Round Bars ready for industrial use.
Specification Overview
| Supplier & Manufacturer | Aurico Alloys LLP |
|---|---|
| Grade | Hastelloy B-2, C-4, C-22, C-276, C-2000, G-30, N and X |
| Standards | One rod and bar specification per grade – listed in Equivalent Grades & Standards below. Inspection certificates to EN 10204. |
| Diameter Range | 6mm – 300mm |
| Length | 100mm – 6000mm (custom options available) |
| Finish | Bright, polished, rough turned, custom |
| Delivery | Certificates as per ASTM, Traceability, Export packing |
| Price | INR 1,800 – 7,500 per kg. Indicative USD 21 – 88 per kg; quoted against grade, form, size and quantity. |
Hastelloy Round Bar Grades Supplied
Each grade below has its own round bar page carrying that grade’s size range, properties and the specification written for it.
| Grade | Chosen for |
|---|---|
| Hastelloy B-2 Round Bars | Reducing acids, especially hydrochloric at all concentrations |
| Hastelloy C-4 Round Bars | High-temperature stability, resists sensitisation after welding |
| Hastelloy C-22 Round Bars | Broad resistance across oxidising and reducing service |
| Hastelloy C-276 Round Bars | The general-purpose choice; wet chlorine, hypochlorite, seawater |
| Hastelloy C-2000 Round Bars | Copper added for sulphuric acid alongside the usual range |
| Hastelloy G-30 Round Bars | Phosphoric acid and mixed-acid pickling |
| Hastelloy N Round Bars | Molten fluoride salts |
| Hastelloy X Round Bars | Strength and oxidation resistance at temperature, gas turbine parts |
Equivalent Grades & Standards
Hastelloy B-2
| Property | Value |
|---|---|
| UNS number | N10665 |
| Werkstoff / EN number | 2.4617 |
| EN designation | NiMo28 |
| Density | 9.22 g/cm3 |
| Rod and bar specification | ASTM B335 |
Identifiers and physical constants for Hastelloy B-2. A dash means no such designation is published for this grade.
Hastelloy C-4
| Property | Value |
|---|---|
| UNS number | N06455 |
| Werkstoff / EN number | 2.4610 |
| EN designation | NiMo16Cr16Ti |
| Density | 8.64 g/cm3 |
| Electrical resistivity | 1.25 µΩ·m |
| Thermal conductivity | 10.1 W/m·°C |
| Coefficient of expansion (24-100 °C) | 10.9 µm/m·°C |
| Specific heat (0 °C) | 406 J/kg·°C |
| Dynamic modulus of elasticity | 212 GPa |
| Rod and bar specification | ASTM B574 |
Identifiers and physical constants for Hastelloy C-4. A dash means no such designation is published for this grade.
Hastelloy C-22
| Property | Value |
|---|---|
| UNS number | N06022 |
| Werkstoff / EN number | 2.4602 |
| EN designation | NiCr21Mo14W |
| Density | 8.69 g/cm3 |
| Melting range | 1357-1399 °C |
| Electrical resistivity | 1.14 µΩ·m |
| Thermal conductivity (50 °C) | 10.1 W/m·°C |
| Thermal diffusivity | 0.027 cm²/s |
| Coefficient of expansion (24-100 °C) | 12.4 µm/m·°C |
| Specific heat (50 °C) | 414 J/kg·°C |
| Dynamic modulus of elasticity | 206 GPa |
| Rod and bar specification | ASTM B574 |
Identifiers and physical constants for Hastelloy C-22. A dash means no such designation is published for this grade.
Hastelloy C-276
| Property | Value |
|---|---|
| UNS number | N10276 |
| Werkstoff / EN number | 2.4819 |
| EN designation | NiMo16Cr15W |
| Density | 8.89 g/cm3 |
| Melting range | 1323-1371 °C |
| Electrical resistivity | 1.23 µΩ·m |
| Thermal conductivity (50 °C) | 10.5 W/m·°C |
| Coefficient of expansion (24-100 °C) | 11.2 µm/m·°C |
| Magnetic permeability (at 200 oersted / 15.9 kA/m) | 1.0002 |
| Specific heat | 427 J/kg·°C |
| Dynamic modulus of elasticity | 205 GPa |
| Poisson's ratio | 0.31 |
| Rod and bar specification | ASTM B574 |
Identifiers and physical constants for Hastelloy C-276. A dash means no such designation is published for this grade.
Hastelloy C-2000
| Property | Value |
|---|---|
| UNS number | N06200 |
| Werkstoff / EN number | 2.4675 |
| EN designation | NiCr23Mo16Cu |
| Density | 8.50 g/cm3 |
| Melting range | 1328-1358 °C |
| Electrical resistivity | 1.28 µΩ·m |
| Thermal conductivity | 9.1 W/m·°C |
| Coefficient of expansion (25-100 °C) | 12.4 µm/m·°C |
| Thermal diffusivity | 0.025 cm²/s |
| Specific heat | 428 J/kg·°C |
| Dynamic modulus of elasticity | 207 GPa |
| Rod and bar specification | ASTM B574 |
Identifiers and physical constants for Hastelloy C-2000. A dash means no such designation is published for this grade.
Hastelloy G-30
| Property | Value |
|---|---|
| UNS number | N06030 |
| Werkstoff / EN number | 2.4603 |
| EN designation | NiCr30FeMo |
| Density | 8.22 g/cm3 |
| Electrical resistivity | 1.16 µΩ·m |
| Thermal conductivity | 10 W/m·°C |
| Coefficient of expansion (30-100 °C) | 12.8 µm/m·°C |
| Dynamic modulus of elasticity | 202 GPa |
| Rod and bar specification | ASTM B581 |
Identifiers and physical constants for Hastelloy G-30. A dash means no such designation is published for this grade.
Hastelloy N
| 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.
Hastelloy X
| Property | Value |
|---|---|
| UNS number | N06002 |
| Werkstoff / EN number | 2.4665 |
| EN designation | NiCr22Fe18Mo |
| Density | 8.22 g/cm3 |
| Melting range | 1260-1355 °C |
| Electrical resistivity (24 °C) | 114.83 µΩ·cm |
| Thermal conductivity (25 °C) | 9.2 W/m·°C |
| Specific heat | 486 J/kg·°C |
| Coefficient of expansion (26-100 °C) | 13.9 µm/m·°C |
| Dynamic modulus of elasticity | 205 GPa |
| Poisson's ratio | 0.320 |
| Magnetic permeability (at 200 oersted / 15.9 kA/m) | 1.002 |
| Rod and bar specification | ASTM B572 / AMS 5754 |
Identifiers and physical constants for Hastelloy X. A dash means no such designation is published for this grade.
Stock & Product Availability
Aurico Alloys LLP stocks a wide range of Hastelloy round bars in various grades and sizes, certified for corrosion resistance efficacy in chemical, marine, aerospace, and power plants delivered globally with full traceability and compliance.
Chemical Composition
Hastelloy B-2
| Element | Min (%) | Max (%) |
|---|---|---|
| Nickel (Ni) | — | Balance |
| Molybdenum (Mo) | 26.0 | 30.0 |
| Iron (Fe) | — | 2.0 |
| Chromium (Cr) | — | 1.0 |
| Cobalt (Co) | — | 1.00 |
| Manganese (Mn) | — | 1.0 |
| Carbon (C) | — | 0.02 |
| Silicon (Si) | — | 0.10 |
| Phosphorus (P) | — | 0.04 |
| Sulfur (S) | — | 0.03 |
Composition limits for Hastelloy B-2. 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.
Hastelloy C-4
| Element | Min (%) | Max (%) |
|---|---|---|
| Nickel (Ni) | — | Balance |
| Chromium (Cr) | 14.0 | 18.0 |
| Molybdenum (Mo) | 14.0 | 17.0 |
| Iron (Fe) | — | 3.0 |
| Cobalt (Co) | — | 2.0 |
| Manganese (Mn) | — | 1.0 |
| Titanium (Ti) | — | 0.7 |
| Carbon (C) | — | 0.015 |
| Silicon (Si) | — | 0.08 |
| Phosphorus (P) | — | 0.04 |
| Sulfur (S) | — | 0.03 |
Composition limits for Hastelloy C-4. 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.
Hastelloy C-22
| Element | Min (%) | Max (%) |
|---|---|---|
| Nickel (Ni) | — | Balance |
| Chromium (Cr) | 20.0 | 22.5 |
| Molybdenum (Mo) | 12.5 | 14.5 |
| Iron (Fe) | 2.0 | 6.0 |
| Tungsten (W) | 2.5 | 3.5 |
| Cobalt (Co) | — | 2.5 |
| Manganese (Mn) | — | 0.50 |
| Vanadium (V) | — | 0.35 |
| Carbon (C) | — | 0.015 |
| Silicon (Si) | — | 0.08 |
| Phosphorus (P) | — | 0.02 |
| Sulfur (S) | — | 0.02 |
Composition limits for Hastelloy C-22. 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.
Hastelloy C-276
| Element | Min (%) | Max (%) |
|---|---|---|
| Nickel (Ni) | — | Balance |
| Chromium (Cr) | 14.5 | 16.5 |
| Molybdenum (Mo) | 15.0 | 17.0 |
| Iron (Fe) | 4.0 | 7.0 |
| Tungsten (W) | 3.0 | 4.5 |
| Cobalt (Co) | — | 2.5 |
| Manganese (Mn) | — | 1.0 |
| Vanadium (V) | — | 0.35 |
| Carbon (C) | — | 0.010 |
| Silicon (Si) | — | 0.08 |
| Phosphorus (P) | — | 0.04 |
| Sulfur (S) | — | 0.03 |
Composition limits for Hastelloy C-276. 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.
Hastelloy C-2000
| Element | Min (%) | Max (%) |
|---|---|---|
| Nickel (Ni) | — | Balance |
| Chromium (Cr) | 22.0 | 24.0 |
| Molybdenum (Mo) | 15.0 | 17.0 |
| Copper (Cu) | 1.3 | 1.9 |
| Iron (Fe) | — | 3.0 |
| Cobalt (Co) | — | 2.0 |
| Manganese (Mn) | — | 0.50 |
| Aluminium (Al) | — | 0.50 |
| Carbon (C) | — | 0.010 |
| Silicon (Si) | — | 0.08 |
| Phosphorus (P) | — | 0.025 |
| Sulfur (S) | — | 0.010 |
Composition limits for Hastelloy C-2000. 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.
Hastelloy G-30
| Element | Min (%) | Max (%) |
|---|---|---|
| Nickel (Ni) | — | Balance |
| Chromium (Cr) | 28.0 | 31.5 |
| Iron (Fe) | 13.0 | 17.0 |
| Molybdenum (Mo) | 4.0 | 6.0 |
| Tungsten (W) | 1.5 | 4.0 |
| Copper (Cu) | 1.0 | 2.4 |
| Niobium (Nb) | 0.30 | 1.50 |
| Cobalt (Co) | — | 5.0 |
| Manganese (Mn) | — | 1.5 |
| Carbon (C) | — | 0.03 |
| Silicon (Si) | — | 0.8 |
| Phosphorus (P) | — | 0.04 |
| Sulfur (S) | — | 0.02 |
Composition limits for Hastelloy G-30. 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.
Hastelloy N
| 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.
Hastelloy X
| Element | Min (%) | Max (%) |
|---|---|---|
| Nickel (Ni) | — | Balance |
| Chromium (Cr) | 20.5 | 23.0 |
| Iron (Fe) | 17.0 | 20.0 |
| Molybdenum (Mo) | 8.0 | 10.0 |
| Cobalt (Co) | 0.5 | 2.5 |
| Tungsten (W) | 0.2 | 1.0 |
| Aluminium (Al) | — | 0.50 |
| Titanium (Ti) | — | 0.15 |
| Copper (Cu) | — | 0.50 |
| Carbon (C) | 0.05 | 0.15 |
| Boron (B) | — | 0.010 |
| Manganese (Mn) | — | 1.0 |
| Silicon (Si) | — | 1.0 |
| Phosphorus (P) | — | 0.040 |
| Sulfur (S) | — | 0.030 |
Composition limits for Hastelloy X. 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 Value |
|---|---|
| Tensile Strength | > 100 MPa (typically) |
| Yield Strength | > 60 MPa (typically) |
| Impact Energy (-196°C) | ISO 148 and ASTM E23 |
| Melting Point (°C) | 1350–1390°C |
Applications & Benefits
- Chemical reactors, scrubbers, and acid-resistant piping in petrochemicals
- Marine: seawater piping, hull fittings, desalination systems
- Aerospace: engine components, exhaust systems, high-temperature structural parts
- Power plants: turbine blades, heat exchangers, flanged fittings
- Industrial: high-performance equipment, corrosion-resistant hardware, and specialty uses
FAQ & Industry insights
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 round bars from Aurico Alloys LLP deliver proven corrosion resistance, high-temperature strength, and certified quality ideal for chemical, marine, aerospace, power, and industrial applications. Are your critical assets protected with the industry’s best superalloys?