When a leading chemical processing plant faced persistent corrosion and operational challenges, the introduction of Hastelloy C22 Sheets marked a revolutionary improvement offering unparalleled resistance to oxidizing and reducing environments, including aggressive acids and seawater. Aurico Alloys LLP supplies these certified sheets trusted by engineers, procurement teams, and fabricators across chemical, oil & gas, marine, pharmaceutical, and power generation sectors for their proven durability and performance.
Table of Contents:
Hastelloy C22 (UNS N06022, ASTM B575, ASME SB575) is a nickel-chromium-molybdenum alloy enhanced with tungsten and iron to provide superior resistance to pitting, crevice corrosion, and stress corrosion cracking, winning favor for its versatility in both oxidizing and reducing media. Its chemical makeup, a delicate balance of chromium (20-22.5%), molybdenum (12.5-14.5%), tungsten (2.5-3.5%), and nickel (balance) enables this alloy to resist the harshest conditions encountered in industrial applications.
Aurico Alloys LLP offers Hastelloy C22 Sheets in various thicknesses and surface finishes, backed by rigorous testing, ASTM and ASME certification, and complete traceability. Our inventory supports expedited delivery, custom fabrication, and comprehensive technical assistance globally.
Choosing Aurico’s Hastelloy C22 Sheets means investing in a corrosion-resistant material that extends plant uptime, reduces maintenance costs, and withstands complex chemical assaults where less capable alloys fail.
High-quality Hastelloy C22 Sheets ready for industrial use.
Specification Overview
| Supplier & Manufacturer | Aurico Alloys LLP |
|---|---|
| Grade | Hastelloy C22 (UNS N06022) |
| Standards | ASTM B575, ASTM B622, ASME SB575 |
| Thickness Range | 0.2 mm – 4.75 mm |
| Width Range | Up to 3000 mm |
| Finishes | Hot rolled, cold rolled, annealed, pickled |
| Forms | Sheets, plates, coils |
| Certification | Full mill test certificates, RoHS/REACH compliance, EN 10204 3.1 traceability |
| 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 |
| Plate, sheet and strip specification | ASTM B575 |
Identifiers and physical constants for Hastelloy C-22. A dash means no such designation is published for this grade.
Stock & Product Availability
Aurico Alloys LLP stocks Hastelloy C22 Sheets across multiple gauges and finishes, ensuring quick delivery and custom cutting options to serve chemical, oil & gas, marine, pharmaceutical, and power industries 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 Properties
| Property | Typical Value |
|---|---|
| Tensile Strength (MPa) | 690 – 850 |
| Yield Strength (MPa) | 310 |
| Elongation (%) | 45+ |
| Hardness (HB) | 240+ |
| Service Temperature (°C) | Up to 1200 (intermittent service) |
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 processing plants handling oxidizing and reducing acids
- Oil & gas sour gas pipelines, valves, and processing equipment
- Marine heat exchangers, desalination plants, and saltwater exposure applications
- Pharmaceutical reactors and sterile manufacturing lines
- Power generation pollution control and high-temperature components
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 C22 Sheets combine corrosion resistance, high mechanical strength, and fabricability crucial to chemical, oil & gas, marine, pharma, and power sectors facing extreme environments. Are you ready to choose Aurico’s certified Hastelloy C22 Sheets for your most critical, corrosion-prone applications?