Product Overview –Hastelloy C22 Tubes
Hastelloy C22 Tubes, are high-performance nickel-chromium-molybdenum-tungsten alloy tubes engineered to deliver exceptional corrosion resistance across a broad range of aggressive chemical environments. Designated as UNS N06022, this alloy provides outstanding protection against oxidizing and reducing acids, chlorides, wet chlorine, ferric chloride, seawater, and mixed chemical media while maintaining excellent mechanical strength and fabrication characteristics.
Hastelloy C22 is widely recognized for its superior resistance to pitting corrosion, crevice corrosion, stress corrosion cracking, and localized attack, making it one of the most versatile corrosion-resistant nickel alloys available for industrial applications.
These tubes are extensively used in chemical processing plants, pharmaceutical manufacturing, pollution control systems, offshore oil & gas facilities, marine engineering, flue gas desulfurization systems, heat exchangers, pressure vessels, pulp & paper mills, and waste treatment plants
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As a trusted supplier, exporter, and stockist of Hastelloy C22 Tubes,we serve customers across the UAE, Saudi Arabia, Qatar, Oman, Kuwait, Bahrain, India, Africa, Europe, and Southeast Asia, delivering quality products, competitive pricing, and reliable logistics for industrial and infrastructure projects.
Material Specification -Hastelloy C22 Tubes
Technical Specifications –Hastelloy C22 Tubes
| Outside Diameter: | 6.35 mm to 114.3 mm |
| Wall Thickness: | 0.5 mm to 12 mm |
| Length: | Up to 18 Meters & Custom Length |
| Pipe Ends: | Plain End, Annealed Ends |
| Product Type | Seamless & Welded Pipes |
| Surface Finish: | Bright Annealed, Pickled, Polished |
| ASTM Seamless : | ASTM B622 |
| ASTM Welded : | ASTM B619 / ASTM B626 |
| Alloy Family: | Nickel-Chromium-Molybdenum-Tungsten Alloy |
| Available Sizes: | ¼", ⅜", ½", ⅝", ¾", 1", 1¼", 1½", 2", 2½", 3", 4" |
Custom lengths and project-specific sizes are available on request.
Third Party Inspection Available
Material is commonly supplied to customer specifications and applicable ASTM / ASME requirements depending on the product form and project requirements. Mechanical and chemical values are as per standard limits. Mill Test Certificates (MTC) available upon request.
Chemical Composition –Hastelloy C22 Tubes
(As per ASTM specification)
| Element | Max (%) |
|---|---|
| Iron (Fe) | 2.0–6.0 |
| Carbon (C) | ≤0.015 |
| Nickel (Ni) | Balance |
| Chromium (Cr) | 20.0–22.5% |
| Molybdenum (Mo) | 12.5–14.5% |
| Tungsten (W) | 2.5–3.5% |
| Cobalt (Co) | ≤2.5% |
| Manganese (Mn) | ≤0.50% |
| Silicon (Si) | ≤0.08% |
| Sulphur (S) | ≤0.02% |
| Vanadium (V) | ≤0.35% |
| Phosphorus (P) | ≤0.02% |
Note: The combination of chromium, molybdenum, and tungsten provides Hastelloy C22 with exceptional resistance to both oxidizing and reducing chemical environments, while the low carbon content helps minimize carbide precipitation during welding.
Mechanical Properties of Hastelloy C22 Tubes
| Property | Value (Min) |
|---|---|
| Yield Strength (0.2%) | ≥310 MPa |
| Tensile Strength | ≥690 MPa |
| Elongation | ≥45% |
| Melting Point | 1357–1400°C |
| Density | 8.69 g/cm³ |
| Hardness | ≤190 HRC |
| Modulus of Elasticity | 206 GPa |
Note :Hastelloy C22 combines excellent ductility with high mechanical strength, allowing it to perform reliably in corrosive process environments while maintaining structural integrity during fabrication and service.
Why Choose Hastelloy C22 Tubes?
Applications of Hastelloy C22 Tubes
Where Hastelloy C22 Tubes are used:
- 🔸Chemical Transfer Lines
- 🔸Gas Turbine Exhaust Systems
- 🔸Combustion Chambers
- 🔸Furnace Rollers
- 🔸High Pressure Piping
- 🔸Pressure Vessels
- 🔸Mining Equipment
- 🔸Waste Treatment Systems
- 🔸Industrial Cooling Systems
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Key Advantages of Hastelloy C22 Tubes
Best Alternatives to Hastelloy C22 Tubes
- This process provides:
- 🔸 Better performance in highly reducing chemical environments
- 🔸 Excellent resistance to wet chlorine and mixed acids
- 🔸 Proven performance in severe process industries
Best for: Chemical reactors, pollution control equipment, and aggressive acid processing plants.
- 🔸 Excellent seawater resistance
- 🔸 High mechanical strength
- 🔸 Outstanding fatigue and oxidation resistance
Best for: Offshore platforms, marine engineering, aerospace, and high-pressure process systems.
- 🔸 Excellent resistance to sulfuric and phosphoric acids
- 🔸 Good chloride stress corrosion cracking resistance
- 🔸 Reliable performance in chemical processing
Best for: Fertilizer plants, acid production units, heat exchangers, and chemical processing equipment.