Hastelloy C-276 Flange (UNS N10276 / W.Nr. 2.4819)
High-strength corrosion-resistant alloy Flange for Chemical processing and Pollution control
As a leading Chinese manufacturer of Hastelloy pipe fittings, SEATHER TECHNOLOGY produces a full range of high-quality Hastelloy C-276 (UNS N10276) flanges engineered for demanding industrial applications.
Hastelloy C-276 is a premier nickel-chromium-molybdenum alloy developed with extremely low carbon and silicon content to minimize welding-related issues. With over 50 years of proven service in the chemical processing industry, C-276 is recognized for its outstanding resistance to a broad spectrum of corrosive chemicals, including strong acids, chlorine-containing media, and high-temperature environments.
Flanges serve as critical components for connecting pipelines, valves, pumps, and other equipment. SEATHER’s Hastelloy C-276 flanges are precision-manufactured to ensure reliable, leak-free connections with our Hastelloy C-276 pipes and tubes, providing excellent mechanical integrity under high pressure and extreme corrosion conditions. If you are sourcing Hastelloy C-276 piping, our matching flange products will be the ideal complement for your system.
Hastelloy C-276 flanges offer superior corrosion resistance, exceptional high-temperature stability, and long service life in harsh environments such as chemical processing, petrochemical systems, pollution control, and offshore operations.
To meet various installation and structural requirements, SEATHER TECHNOLOGY supplies Hastelloy C-276 flanges in multiple types, including:
- Threaded Flange
- Slip-On Welding Flange
- Blind Flange
- Socket Welding Flange
- Lap Joint Flange
- Welding Neck Flange
With advanced production technology, strict quality control, and full customization options, SEATHER ensures that each Hastelloy C-276 flange delivers precision, durability, and exceptional performance for your critical piping systems.
Hastelloy C-276 Flange (UNS N10276) Specifications & Srtandard
- NPS: 1/2 ~ 48″
- SCH: 5 ~ XXS
- Classification: TH (Threaded) flange, SO (Slip-On Welding) flange, BL (Blind) flange, SW (Socket Welding) flange, LJ (Lapped) flange, WN (Welding Neck) flange
- Customized size needs to be confirmed with our team
- Pressure Level: 150 – 2500lbs
- Grades: C-276 / UNS N10276 / W.Nr. 2.4819
- Standards: ASTM B462
ASME B16.5
MSS SP-25 - Brand: SEATHER TECHNOLOGY, Special Metals(SMC), HAYNES International, VDM Metals, ATI, etc.
Hastelloy C-276 Flange (UNS N10276) Applications & Usages
Hastelloy alloy C-276 is commonly used for the following applications:
- Chemical process industry
- Flue gas desulfurization units
- Pickling equipment in the steel industry
- Waste incineration plants
- Seawater desalination plants
- Flue gas scrubbing facilities
- Pharmaceuticals
- Heat exchangers
What is Hastelloy C-276 (UNS N10276)
Alloy C-276 also referred to as the UNS N10276/W.Nr. 2.4819 alloy.
It is a very commonly used nickel-chromium-molybdenum alloy.
Among superalloys, it is known for its high molybdenum content.
Alloy C-276 exhibits excellent corrosion resistance in a wide range of severe environments.
Alloy C-276 is widely used in chemical processing, pollution control, pulp and paper production, industrial and municipal waste treatment.
Hastelloy C-276 Flange (UNS N10276) Chemical Composition
| % | Ni | Cr | Mo | W | Co | C | Mn | Si | P | S | Fe | V |
| Min | Balance | 14.5 | 15 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 |
| Max | Balance | 16.5 | 17 | 4.5 | 2.5 | 0.01 | 1 | 0.08 | 0.04 | 0.03 | 7 | 0.35 |
Hastelloy C-276 Flange (UNS N10276) Mechanical Properties
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.89 g/cm3 | 1371 °C (2500 °F) | 650-950Mpa | 210-350Mpa | 65% – 55% |
Hastelloy C-276 Flange (UNS N10276) Physical Properties
| Melting Range | Specific Heat, 20°C (J/(g.K)) | Magnetic Permeability (20°C) | Thermal Conductivity, 20°C (W/(m.K)) | Curie Temperature (°C) |
| 1371 °C (2500 °F) | 440 | ＜1.0002 | 9.8 | -125 |
Metal Cutting Service
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CNC Machining Services
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Sheet Metal Fabrication
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Metal Welding Service
Seather provides some of the best solutions ranging from custom metal welding and related services.
More Information About Hastelloy C-276 Flange (UNS N10276)
When you choose to buy Hastelloy C-276 Flange (UNS N10276), there have some important points we need to know before we get started.
Pitting resistance equivalency numbers (PREN) for Hastelloy C-276
Hastelloy C-276 PREN: 68.3
The pitting resistance equivalency number uses the alloy’s chemical makeup to guess its power against pitting corrosion. You check how much chromium, molybdenum, tungsten, and nitrogen are in the alloy. These elements help keep the steel safe. The most used formula is:
PREN = CR% + 3.3 x (MO% + 0.5 x W%) + 16 x N%How to Purchase Hastelloy C-276 Seamless Pipe Tube (UNS N10276)
When purchasing alloy flanges, it’s essential to have the right materials and information to ensure a smooth procurement process and to get the products that meet your project needs.
Here’s what you need to provide:
1. Material: Specify the flange material, such as nickel alloy C-276. You can refer to standards such as ASTM and ASME.
2. Type: Determine the type of flange needed, such as butt welding flange, threaded flange, slip-on flange, blind flange, etc.
3. Size: Specify the flange’s nominal diameter (DN) and pressure rating (PN).
4. Quantity: Provide the exact number of flanges required for an accurate quotation.
5. Technical specifications: Include technical specifications and drawings. If there are unique design requirements, detailed drawings can be attached.
6. Quality standards: Specify quality standards and inspection requirements, such as the need for third-party inspection, material certification, and inspection reports.
7. Special requirements: Specify any special surface treatment, coating, corrosion resistance requirements, etc.
8. Packaging requirements: If there are specific packaging needs, such as protective or anti-corrosion packaging, please specify.
9. Delivery time: Specify the expected delivery time and location.
By preparing the above information, you can streamline the process of purchasing flanges and ensure that you receive high-quality products that meet your requirements.
Conclusion
We have introduced our products briefly. If you want to know more about it, you can check the article here Hastelloy Alloy C-276: Composition, Properties and Applications.
If you need to purchase alloy flange, please get in touch with us immediately.
Trademark Notices:
Inconel®, Incoloy®, and Monel® are registered trademarks of Special Metals Corporation.
Hastelloy® is a registered trademark name of Haynes International, Inc.
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