In the heart of a chemical plant, a vital mixer shaft faced total destruction from an unexpected acid leak until engineers sourced Hastelloy C22 Round Bars. These bars have since become the go-to for processes where failure means major losses, supporting next-generation reliability for chemical, oil & gas, marine, pharmaceutical, and power industries. With certified, traceable supply from Aurico Alloys LLP, procurement heads, OEMs, and hardware suppliers can access premium C22 bars for new builds and urgent spares that demand truly universal corrosion performance.
Table of Contents:
Hastelloy C22 (UNS N06022, ASTM B574, W.Nr. 2.4602) is a nickel-chromium-molybdenum-tungsten superalloy with a unique capacity to defeat pitting, crevice attack, and stress corrosion cracking in oxidizing and reducing acids, chlorine, and seawater. Outperforming C276 and high-end stainless grades, C22 offers peace of mind for industrial engineers specifying hardware or pressure vessels exposed to mixed chemical media, wet process streams, marine brines, or high-purity pharma lines.
Aurico Alloys LLP supplies Hastelloy C22 Round Bars in sizes 6mm–400mm, cut-to-length and available in black bar and bright bar finishes. Every shipment includes full ASTM, ASME and DIN documentation and NACE MR0175/ISO 15156 and MR0103/ISO 17945 certification for projects requiring rapid deployment, long-term asset security, and global documentation.
Below is an expert resource with complete technical data, covering specification, chemical and mechanical profiles, standard equivalencies, and main applications for buyers, engineers, and all SEO platforms seeking ultimate corrosion and mechanical reliability in demanding sectors.
High-quality Hastelloy C22 Round Bars ready for industrial use.
Specification Overview
| Supplier & Manufacturer | Aurico Alloys LLP |
|---|---|
| Grade | Hastelloy C22 (UNS N06022, W.Nr. 2.4602) |
| Standards | ASTM B574 / B564, ASME SB574 / SB564, DIN 2.4602, DIN 17744 / 17752, EN 2.4602 (NiCr21Mo14W), NACE MR0175 / ISO 15156, NACE MR0103 / ISO 17945 |
| Diameter Range | 6mm – 400mm (custom as required) |
| Length | Up to 12 meters |
| Finish | Black bar, bright bar |
| Delivery | Supplied from stock or arranged against order, depending on grade and size; availability and lead time confirmed at quotation. Full MTC, export packing. |
| Price | INR 3,500 – 5,000 per kg. Indicative USD 41 – 59 per kg; quoted against grade, form, size and quantity. |
Equivalent Grades & Standards
| 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 / B564 |
Identifiers and physical constants for Hastelloy C-22. A dash means no such designation is published for this grade.
Stock & Product Availability
Hastelloy C22 round bars from Aurico Alloys LLP are available in black bar and bright bar finishes with custom machining, rapid stock, and export-ready MTC serving chemical, marine, pharma, energy, and supply chains worldwide.
Chemical Composition
| 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.
Mechanical & Physical Properties
| Property | Typical Value |
|---|---|
| Tensile Strength (MPa) | ≥690 |
| Yield Strength (MPa, 0.2%) | ≥310 |
| Elongation (%) | ≥45 |
| Hardness (Rockwell B) | ≤90 |
| Max Service Temp (°C) | Up to 1093 |
Applications & Benefits
Why this grade
Hastelloy C22 raises chromium to about 22% at the expense of tungsten. The extra chromium widens the margin in oxidising conditions — nitric acid, mixed acids, and oxidising chlorides such as ferric and cupric chloride — which is exactly where C276 is most likely to pit. It is the standard step up from C276 when the oxidising side of a mixed stream is the problem.
- Chemical: Acid lines, reactors, evaporators, FGD, fertilizer, and mixed-media digesters.
- Marine: Piping, fittings, seawater heat exchangers, coastal plant upgrades.
- Oil & Gas: Downhole lines, sour service, chlorinated or acidic wells, refinery units.
- Pharma: High-purity process vessels, reactor rods, cleanroom supports.
- Power: Boiler tubes, condensers, flue-gas scrubbers, heat exchangers.
- Fabrication/Supply: Fast spares for process, urgent OEM projects, major repairs in harsh chemical or marine settings.
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 C22 Round Bars from Aurico Alloys LLP deliver unmatched resistance, strength, and compliance for the harshest chemical, oil & gas, marine, pharma, power, and hardware environments meeting ASTM, UNS, DIN, and NACE standards with stock and custom solutions worldwide. Are your most valuable assets protected by the world’s leading corrosion alloy bar?