During a turnaround at a major petrochemical plant, engineers discovered that their existing alloy bars had suffered severe corrosion and distortion under intense operating temperatures. Their loss translated into millions in repairs, safety risks, and staggering downtime. After consulting global experts, the solution was clear: Haynes Round Bars. Engineered for extreme heat, acid, and corrosive environments, Haynes alloys now stand as the backbone for procurement heads, engineers, fabricators, OEMs, and hardware stores demanding reliability and compliance in chemical, oil & gas, marine, pharmaceutical, and power applications.
Table of Contents:
Haynes alloys, such as 25 (UNS R30605), 230 (UNS N06230), and 188 (UNS R30188), feature advanced nickel-cobalt-chromium-molybdenum compositions. These superalloys deliver superior resistance against oxidation, carburization, sulfidation, and chloride-induced attack at temperatures even up to 1150°C. Compared to stainless and basic nickel alloys, Haynes round bars outperform in flue gas desulfurization, power turbines, oil refinery vessels, marine heat exchangers, and pharma reactors where both chemical and thermal stress persist.
Aurico Alloys LLP offers Haynes Round Bars in standard and custom sizes, cut to length, and precision finished. All bars come with full mill test certificates, EN, ASTM, AMS, and NACE MR0175/ISO 15156 compliance, supporting critical supply chains for urgent spares, OEM builds, and industrial distribution. Their reputation for authenticity, affordable pricing, and technical support ensures end-users always have access to the best quality alloys for mission-critical needs.
This guide details Haynes bar grades, equivalent standards, chemical and mechanical properties, major use cases, and strategic advantages underlying their rapid adoption in today’s harshest industrial sectors.
High-quality Haynes Round Bars ready for industrial use.
Specification Overview
| Supplier & Manufacturer | Aurico Alloys LLP |
|---|---|
| Grades | Haynes 25, 188, 214, 230, 242 and 282 |
| Standards | One rod and bar specification per grade – listed in Equivalent Grades & Standards below. Inspection certificates to EN 10204. |
| Diameter Range | 3mm – 800mm standard/custom |
| Length | Up to 6000mm; cut-to-spec available |
| Finish | Bright, black, polished, rough-turned, hot-rolled, ground |
| Delivery | Stock or custom, MTC, export-ready, global shipment |
| Price | INR 5,000 – 15,000 per kg. Indicative USD 60 – 175 per kg; quoted against grade, form, size and quantity. |
Haynes 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 |
|---|---|
| Haynes 25 Round Bars | Wear and sulphidation resistance, sliding contact at temperature |
| Haynes 188 Round Bars | Oxidation resistance to about 1095 °C, combustor hardware |
| Haynes 214 Round Bars | The highest oxidation resistance of the family, honeycomb seals and foil |
| Haynes 230 Round Bars | Strength, oxidation resistance and long-term stability combined |
| Haynes 242 Round Bars | Strength with low thermal expansion, seal rings and ducting |
| Haynes 282 Round Bars | Creep strength with better weldability than earlier disc alloys |
Equivalent Grades & Standards
Haynes 25
| Property | Value |
|---|---|
| UNS number | R30605 |
| Werkstoff / EN number | 2.4964 |
| EN designation | CoCr20W15Ni |
| Density | 9.07 g/cm3 |
| Melting range | 1330-1410 °C |
| Electrical resistivity | 88.6 µΩ·cm |
| Thermal diffusivity | 0.0283 cm²/s |
| Thermal conductivity (25 °C) | 10.5 W/m·°C |
| Specific heat (25 °C) | 403 J/kg·°C |
| Coefficient of expansion (25-100 °C) | 12.8 µm/m·°C |
| Dynamic modulus of elasticity | 225 GPa |
| Rod and bar specification | AMS 5759 |
Identifiers and physical constants for Haynes 25. A dash means no such designation is published for this grade.
Haynes 188
| Property | Value |
|---|---|
| UNS number | R30188 |
| Werkstoff / EN number | 2.4683 |
| EN designation | CoCr20NiW |
| Density | 8.98 g/cm3 |
| Melting range | 1300-1415 °C |
| Electrical resistivity | 101.0 µΩ·cm |
| Thermal diffusivity | 0.0292 cm²/s |
| Thermal conductivity | 10.4 W/m·°C |
| Specific heat (100 °C) | 423 J/kg·°C (RT cell on the source page is corrupt - see note above) |
| Coefficient of expansion (25-100 °C) | 12.1 µm/m·°C |
| Dynamic modulus of elasticity | 232 GPa |
| Modulus of rigidity (dynamic) | 90 GPa |
| Poisson's ratio | 0.30 |
| Rod and bar specification | AMS 5772 |
Identifiers and physical constants for Haynes 188. A dash means no such designation is published for this grade.
Haynes 214
| Property | Value |
|---|---|
| UNS number | N07214 |
| Melting range | 1355-1400 °C |
| Electrical resistivity | 135.9 µΩ·cm |
| Thermal diffusivity | 0.0336 cm²/s |
| Thermal conductivity | 12.0 W/m·°C |
| Specific heat | 452 J/kg·°C |
| Coefficient of expansion (25-200 °C) | 13.3 µm/m·°C |
| Dynamic modulus of elasticity | 218 GPa |
| Rod and bar specification | Mill specification |
Identifiers and physical constants for Haynes 214. A dash means no such designation is published for this grade.
Haynes 230
| Property | Value |
|---|---|
| UNS number | N06230 |
| Werkstoff / EN number | 2.4733 |
| EN designation | NiCr22W14Mo |
| Density | 8.97 g/cm3 |
| Melting range | 1301-1371 °C |
| Electrical resistivity | 125.0 µΩ·cm |
| Thermal diffusivity | 0.0242 cm²/s |
| Thermal conductivity | 8.9 W/m·°C |
| Specific heat | 397 J/kg·°C |
| Coefficient of expansion (25-100 °C) | 11.8 µm/m·°C |
| Dynamic modulus of elasticity | 209 GPa |
| Modulus of rigidity (dynamic) | 79 GPa |
| Poisson's ratio | 0.31 |
| Rod and bar specification | ASTM B572 |
Identifiers and physical constants for Haynes 230. A dash means no such designation is published for this grade.
Haynes 242
| Property | Value |
|---|---|
| UNS number | N10242 |
| Density | 9.05 g/cm3 |
| Melting range | 1290-1375 °C |
| Electrical resistivity | 122.0 µΩ·cm |
| Thermal diffusivity | 0.0305 cm²/s |
| Thermal conductivity | 11.3 W/m·°C |
| Specific heat | 386 J/kg·°C |
| Coefficient of expansion (25-100 °C) | 10.8 µm/m·°C |
| Dynamic modulus of elasticity | 229 GPa |
| Rod and bar specification | ASTM B573 |
Identifiers and physical constants for Haynes 242. A dash means no such designation is published for this grade.
Haynes 282
| Property | Value |
|---|---|
| UNS number | N07208 |
| Density | 8.27 g/cm3 |
| Melting range | 1300-1375 °C |
| Density (Age-hardened) | 8.29 g/cm3 |
| Rod and bar specification | ASTM B637 / AMS 5915 |
Identifiers and physical constants for Haynes 282. A dash means no such designation is published for this grade.
Stock & Product Availability
Haynes round bars from Aurico Alloys LLP diameters 3mm to 800mm, lengths up to 6 meters, in bright, rough, or custom finishes. All supplied with global-standard MTC and ready for deployment in chemical, marine, pharma, energy, and hardware stores.
Chemical Composition
Haynes 25
| Element | Min (%) | Max (%) |
|---|---|---|
| Carbon (C) | 0.05 | 0.15 |
| Silicon (Si) | — | 0.40 |
| Manganese (Mn) | 1.00 | 2.00 |
| Phosphorus (P) | — | 0.040 |
| Sulfur (S) | — | 0.030 |
| Chromium (Cr) | 19.00 | 21.00 |
| Nickel (Ni) | 9.00 | 11.00 |
| Tungsten (W) | 14.00 | 16.00 |
| Cobalt (Co) | — | Balance |
| Iron (Fe) | — | 3.00 |
Composition limits for Haynes 25. 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.
Haynes 188
| Element | Min (%) | Max (%) |
|---|---|---|
| Carbon (C) | 0.05 | 0.15 |
| Manganese (Mn) | — | 1.25 |
| Silicon (Si) | 0.20 | 0.50 |
| Phosphorus (P) | — | 0.020 |
| Sulfur (S) | — | 0.015 |
| Chromium (Cr) | 20.00 | 24.00 |
| Nickel (Ni) | 20.00 | 24.00 |
| Tungsten (W) | 13.00 | 16.00 |
| Lanthanum (La) | 0.02 | 0.12 |
| Boron (B) | — | 0.015 |
| Iron (Fe) | — | 3.00 |
| Cobalt (Co) | — | Balance |
Composition limits for Haynes 188. 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.
Haynes 214
| Element | Min (%) | Max (%) |
|---|---|---|
| Nickel (Ni) | — | Balance (75 nominal) |
| Chromium (Cr) | 16 nominal | |
| Aluminium (Al) | 4.5 nominal | |
| Iron (Fe) | 3 nominal | |
| Cobalt (Co) | — | 2 |
| Manganese (Mn) | — | 0.5 |
| Molybdenum (Mo) | — | 0.5 |
| Titanium (Ti) | — | 0.5 |
| Tungsten (W) | — | 0.5 |
| Niobium (Nb) | — | 0.15 |
| Silicon (Si) | — | 0.2 |
| Zirconium (Zr) | — | 0.1 |
| Carbon (C) | 0.04 nominal | |
| Boron (B) | — | 0.01 |
| Yttrium (Y) | 0.01 nominal | |
Composition for Haynes 214. Figures given as a range or a maximum are limits and those marked nominal are not; none of them are measured values for a lot; the mill test certificate supplied with your order states the actual analysis.
Haynes 230
| Element | Min (%) | Max (%) |
|---|---|---|
| Carbon (C) | 0.05 | 0.15 |
| Manganese (Mn) | 0.30 | 1.00 |
| Silicon (Si) | 0.25 | 0.75 |
| Phosphorus (P) | — | 0.030 |
| Sulfur (S) | — | 0.015 |
| Chromium (Cr) | 20.00 | 24.00 |
| Molybdenum (Mo) | 1.00 | 3.00 |
| Tungsten (W) | 13.00 | 15.00 |
| Aluminium (Al) | 0.20 | 0.50 |
| Lanthanum (La) | 0.005 | 0.05 |
| Cobalt (Co) | — | 5.00 |
| Titanium (Ti) | — | 0.10 |
| Boron (B) | — | 0.015 |
| Iron (Fe) | — | 3.00 |
| Copper (Cu) | — | 0.50 |
| Nickel (Ni) | — | Balance |
Composition limits for Haynes 230. 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.
Haynes 242
| Element | Min (%) | Max (%) |
|---|---|---|
| Nickel (Ni) | — | Balance |
| Molybdenum (Mo) | 25 nominal | |
| Chromium (Cr) | 8 nominal | |
| Iron (Fe) | — | 2 |
| Cobalt (Co) | — | 1 |
| Manganese (Mn) | — | 0.8 |
| Silicon (Si) | — | 0.8 |
| Aluminium (Al) | — | 0.5 |
| Carbon (C) | — | 0.03 |
| Boron (B) | — | 0.006 |
Composition for Haynes 242. Figures given as a range or a maximum are limits and those marked nominal are not; none of them are measured values for a lot; the mill test certificate supplied with your order states the actual analysis.
Haynes 282
| Element | Min (%) | Max (%) |
|---|---|---|
| Nickel (Ni) | — | Balance |
| Chromium (Cr) | 20 nominal | |
| Cobalt (Co) | 10 nominal | |
| Molybdenum (Mo) | 8.5 nominal | |
| Titanium (Ti) | 2.1 nominal | |
| Aluminium (Al) | 1.5 nominal | |
| Iron (Fe) | — | 1.5 |
| Manganese (Mn) | — | 0.3 |
| Silicon (Si) | — | 0.15 |
| Carbon (C) | 0.06 nominal | |
| Boron (B) | 0.005 nominal | |
Composition for Haynes 282. Figures given as a range or a maximum are limits and those marked nominal are not; none of them are measured values for a lot; the mill test certificate supplied with your order states the actual analysis.
Mechanical & Physical Properties
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HRC) | Density (g/cm³) | Max Temp (°C) |
|---|---|---|---|---|---|---|
| Haynes 25 | 1170 | 510 | 20 | 25–35 | 9.13 | 1090 |
| Haynes 230 | 758–896 | 345–483 | 35–45 | 20–25 | 9.09 | 1150 |
| Haynes 188 | 900 | 460 | 30 | 24–34 | 9.14 | 1100 |
Applications & Benefits
- Chemical: Acid process equipment, trays, reactors, springs, heat exchangers.
- Oil & Gas: Valves, pipes, turbo components exposed to H2S, CO2, sour gas, and high heat.
- Marine: Pumps, condensers, desalination, high-pressure piping and corrosion-resistant hardware.
- Pharma: High-purity reactors, sterilization vessels, springs, and instrument rods for clean environments.
- Power: Turbine blades, flue gas desulfurization, furnace parts needing thermal/oxidation resistance.
- Hardware/Industrial Supply: Stock for rapid spares, OEM builds, and fabrication projects.
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
Haynes Round Bars from Aurico Alloys LLP provide industry-defining strength, heat, and corrosion resistance for chemical, oil & gas, marine, pharma and power sectors backed by ASTM, UNS, EN, and DIN verification, rapid supply and trusted quality for every demanding application. Are your facilities equipped for today’s extremes with Haynes round bar performance?