Material Grade:Hastelloy C22 / Alloy C22
UNS Number:UNS N06022
DIN Number:2.4602
Standard:ASTM B564
Flange Standards:ASME B16.5, ASME B16.47, DIN, EN, JIS
Pressure Rating:Class 150, 300, 600, 900, 1500, 2500
Hastelloy C22 Flange Manufacturer & Supplier
Hastelloy C22 Flange is a high-performance nickel alloy flange manufactured for highly corrosive environments. Made from Alloy C22 (UNS N06022), these flanges offer excellent resistance to pitting, crevice corrosion, oxidizing media, and reducing chemicals. Hastelloy C22 flanges are widely used in chemical processing, marine engineering, power generation, pharmaceutical, and offshore industries.
Our Hastelloy C22 pipe flanges are produced according to ASTM B564 and ASME B16.5 standards. Available in weld neck, slip-on, blind, socket weld, threaded, and lap joint types, these flanges provide reliable sealing performance under high-temperature and high-pressure conditions.
Hastelloy C22 Flange Specifications
| Specification | Details |
|---|---|
| Material Grade | Hastelloy C22 / Alloy C22 |
| UNS Number | UNS N06022 |
| DIN Number | 2.4602 |
| Standard | ASTM B564 |
| Flange Standards | ASME B16.5, ASME B16.47, DIN, EN, JIS |
| Pressure Rating | Class 150, 300, 600, 900, 1500, 2500 |
| Size Range | 1/2” to 48” |
| Face Types | RF, FF, RTJ |
| Manufacturing Process | Forged, Machined |
| Surface Finish | Anti-rust Oil, Black Paint, Pickling |
| Testing | PMI, Hydro Test, UT Test, Hardness Test |
| Packaging | Wooden Cases, Plywood Boxes, Export Packing |
Hastelloy C22 Flange Types
We manufacture a complete range of Hastelloy C22 flanges for various piping and pressure applications.
1. Hastelloy C22 Weld Neck Flange
Hastelloy C22 weld neck flange features a tapered hub designed for high-pressure systems. It provides excellent stress distribution and is commonly used in severe service conditions.
Applications:
- High-temperature pipelines
- Chemical processing plants
- Pressure vessel connections
2. Hastelloy C22 Slip-On Flange
Slip-on flanges are easy to align and install. These flanges slide over the pipe and are welded both inside and outside for additional strength.
Applications:
- Low-pressure systems
- Cooling water lines
- Process piping
3. Hastelloy C22 Blind Flange
Blind flanges are used to seal the end of piping systems or pressure vessel openings.
Applications:
- Pipeline isolation
- Maintenance access
- Future expansion systems
4. Hastelloy C22 Socket Weld Flange
Socket weld flanges are designed for small-diameter piping systems with high pressure.
Applications:
- Hydraulic lines
- Steam systems
- Process piping
5. Hastelloy C22 Threaded Flange
Threaded flanges are used when welding is not preferred.
Applications:
- Hazardous areas
- Gas pipelines
- Low-temperature piping
6. Hastelloy C22 Lap Joint Flange
Lap joint flanges are suitable for systems requiring frequent dismantling.
Applications:
- Food processing
- Pharmaceutical piping
- Low-pressure systems
Chemical Composition of Hastelloy C22
| Element | Percentage (%) |
| 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) | Max 2.5 |
| Carbon (C) | Max 0.015 |
| Silicon (Si) | Max 0.08 |
| Manganese (Mn) | Max 0.5 |
| Vanadium (V) | Max 0.35 |
The balanced composition of Alloy C22 makes it one of the most corrosion-resistant nickel alloys available.
Mechanical Properties of Hastelloy C22 Flange
| Property | Value |
| Tensile Strength | 690 MPa |
| Yield Strength | 310 MPa |
| Elongation | 45% |
| Density | 8.69 g/cm³ |
| Melting Range | 1357–1430°C |
| Hardness | Max 100 HRB |
These mechanical properties provide excellent durability, toughness, and long service life.
Advantages of Hastelloy C22 Flanges
Hastelloy C22 pipe flanges are widely preferred because of their superior performance characteristics.
Excellent Corrosion Resistance
Alloy C22 provides exceptional protection against oxidizing and reducing environments, including mixed acid conditions.
Superior Resistance to Pitting and Crevice Corrosion
The high molybdenum content enhances resistance to localized corrosion, particularly in chloride-rich environments.
High Temperature Stability
Hastelloy C22 flanges maintain mechanical integrity even under elevated temperatures.
Excellent Fabrication Performance
The alloy can be machined, forged, welded, and fabricated without compromising corrosion resistance.
Long Service Life
These flanges require less maintenance and offer reduced replacement costs over time.
Hastelloy C22 Flange Applications
Hastelloy C22 flanges are widely used across multiple industries where aggressive chemical exposure is common.
Chemical Processing Industry
Used in reactors, pipelines, pressure vessels, and storage tanks exposed to corrosive chemicals.
Marine and Offshore Industry
Suitable for seawater applications, desalination plants, and offshore oil platforms.
Pollution Control Systems
Widely used in flue gas desulfurization systems and waste treatment equipment.
Pharmaceutical Industry
Ideal for high-purity piping systems requiring excellent corrosion resistance.
Power Generation Industry
Used in heat exchangers, boilers, and steam pipelines.
Oil and Gas Industry
Applied in sour gas environments and corrosive offshore production facilities.
Hastelloy C22 Flange Dimensions and Standards
Our Hastelloy C22 flanges are manufactured according to global dimensional standards.
International Standards:
- ASME B16.5
- ASME B16.47 Series A & B
- DIN Standard Flanges
- EN 1092-1
- JIS Standard Flanges
- BS Standard Flanges
Pressure Ratings Available:
- Class 150
- Class 300
- Class 600
- Class 900
- Class 1500
- Class 2500
Facing Types:
- Raised Face (RF)
- Flat Face (FF)
- Ring Type Joint (RTJ)
Manufacturing Process of Hastelloy C22 Flanges
Our production process ensures precision and consistency.
- Raw Material Inspection
- Forging Process
- Heat Treatment
- CNC Machining
- Surface Finishing
- Dimensional Inspection
- Mechanical Testing
- PMI Testing
- Final Packaging
All flanges are manufactured using advanced equipment to ensure dimensional accuracy and performance reliability.
Quality Control and Testing
Every Hastelloy C22 flange undergoes rigorous testing before shipment.
Inspection Methods:
- Positive Material Identification (PMI)
- Ultrasonic Testing (UT)
- Hydrostatic Testing
- Hardness Testing
- Visual Inspection
- Dimensional Verification
- Surface Finish Inspection
Our quality control process ensures compliance with international standards.
Packaging and Delivery
We ensure safe export packaging to protect Hastelloy C22 flanges during transportation.
Packaging Options:
- Wooden Crates
- Plywood Boxes
- Bubble Wrap Protection
- Waterproof Packing
- Custom Labeling
FAQ
What is Hastelloy C22 flange used for?
Hastelloy C22 flange is used in highly corrosive environments such as chemical processing, offshore oil platforms, marine systems, and pharmaceutical plants.
What standard is used for Hastelloy C22 flange?
Hastelloy C22 flanges are typically manufactured according to ASTM B564 and ASME B16.5 standards.
Is Hastelloy C22 better than stainless steel?
Yes. Hastelloy C22 provides superior resistance to aggressive chemicals and chloride environments compared to stainless steel.
What is the pressure rating for Hastelloy C22 flange?
Pressure ratings range from Class 150 to Class 2500 depending on the flange design and application.
Can Hastelloy C22 flanges be customized?
Yes. Custom dimensions, drilling patterns, facing types, and pressure classes are available.
We supply premium ASTM B564 Hastelloy C22 flanges for global industrial applications with fast delivery and competitive pricing.
Contact us now to get your Hastelloy C22 flange quotation
Contact us now for a quotation.
Email: sales@hengyimetal.com
WhatsApp:+86 19521258704
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