ASME SB622 UNS N10276 Nickel Alloy Threaded Pipe Ends
ASME SB622 UNS N10276 is a high-performance nickel alloy tube (Hastelloy C276) with threaded ends, renowned for its excellent corrosion resistance. Key considerations include the material's composition (nickel-molybdenum-chromium), its suitability for harsh chemical and sour gas environments, and the availability of various tube end styles, such as threaded/plain end (TOE/POE) or threaded both ends (TBE). You should also be aware that the material must meet specific mechanical properties, be tested, and be supplied according to the SB622 standard, which typically requires the material to be solution annealed and descaled.
What are the specifications for Hastelloy C276 pipe?
This composition gives the material a high melting point of 1370℃. Hastelloy C276 seamless pipe has a minimum yield strength of 355 MPa and a minimum tensile strength of 790 MPa. The material also has a high density of 8.89 grams per cubic centimeter.
Hastelloy C276 alloy's high nickel and molybdenum contents provide strong resistance to pitting and crevice corrosion under reducing conditions, while its chromium content provides oxidation resistance. Furthermore, its low carbon content helps prevent carbide precipitation during welding, thereby maintaining the corrosion resistance of welded structures. The alloy also inhibits the formation of grain boundary precipitates in the heat-affected zone during welding, making it ideal for numerous chemical processing applications in the as-welded state.
In summary, Hastelloy C-276 (UNS N10276 / 2.4819) seamless pipe, conforming to ASTM B622 / ASME SB622, represents the gold standard for corrosion resistance in the harshest industrial environments, particularly where high pressure, high temperature, and seamless welds are critical requirements.
ASME SB622 Hastelloy C276 / UNS N10276 Nickel Alloy Tube Equivalent Grade
| WNR. | |||||||
| Hastelloy C276 | N10276 | 2.4819 | - | NiMo16Cr15W | NW 0276 | ЭП760 | ХН65МВУ |
ASME SB622 Hastelloy C276 / UNS N10276 Nickel Alloy Tube Chemical Composition
| Hastelloy C276 | C | P | S | |||||||
| 0.010 max | 15.00 – 17.00 | 1.00 max | 0.08 max | 4.00 – 7.00 | 0.04 max | 0.03 max | 2.5 max | 14.50 – 16.50 |
ASME SB622 Hastelloy C276 / UNS N10276 Nickel Alloy Tube Mechanical Properties
| Yield Strength (0.2%Offset) | ||||
| 8.89 g/cm3 | 1370 ℃ (2500 ℃F) | Psi – 52,000 , MPa – 355 | Psi – 1,15,000 , MPa – 790 | 40 % |
Key Properties of C276 Nickel Alloy Seamless Pipe
Excellent resistance to pitting, crevice corrosion, and stress corrosion cracking.
Resistant to a wide range of corrosive environments, including acidic environments (e.g., hydrochloric, sulfuric, and phosphoric acids).
Tensile Strength: Typically approximately 70,000 psi (or higher), depending on specific handling and processing techniques.
Yield Strength: Approximately 30,000 psi (or higher).
Elongation: Typically approximately 30%, indicating good ductility.
High-Temperature Performance:
Maintains mechanical integrity and resistance to oxidation and sulfidation at elevated temperatures.
Gnee Steel specializes in the production and sale of various nickel-based alloys, including Nickel 201, Nickel 202, Hastelloy C-276, Hastelloy C-22, Hastelloy B, Hastelloy C-4, Inconel Alloy 600, Inconel 625, Inconel 718, Inconel X-750, Incoloy Alloy 800, Incoloy 800H/HT, Incoloy 825, Monel Alloy 400, Monel K500, and high-temperature alloys. Gnee Steel's products are widely used in aerospace, chemical, electric power, automotive, and nuclear energy applications. We also offer customized alloy solutions tailored to customer needs. For alloy pricing inquiries or customized alloy solutions, please contact us for a quote at ss@gneesteel.com.
