Hastelloy C276 seamless pipe is made from a nickel-chromium-molybdenum alloy known for its excellent resistance to a wide range of corrosive environments, including acids, chlorides, and oxidants, as well as its ability to withstand high temperatures and stress corrosion cracking. This makes C276 an ideal choice for the chemical processing, pollution control (such as flue gas desulfurization), oil and gas, and marine industries. The alloy's composition contains significant amounts of nickel, molybdenum, and tungsten, resulting in a balance of strength and corrosion resistance, while its low carbon content ensures good weldability.
What are the specifications for Hastelloy C276 pipe?
This composition gives the material a high melting point of 1370°C. 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.
ASTM B622 Hastelloy C276 Seamless Pipes and Tubes Specifications
| Size | 6.00 mm OD up to 914.4 mm OD |
| Thickness | 0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS |
| Length | Within 13500mm |
| Type | Seamless Pipes, Seamless Tubes |
| Grades | UNS N10276, UNS N06022, UNS N10665 , C22, C276 , B2, B3, X, C4, C2000 |
Surface Finish Options Of Hastelloy C276 Tubing
| Code Finish | Contact Surface of Non-Product (Maximum Ra) |
Contact Surface of product (Maximum Ra)* |
|---|---|---|
| -SF | Mill Finish | Sanitary Finish* |
| -PL | 32 µ-inch (0.8 µm) | 20 µ-inch (0.5 µm) |
| -PU | Mill Finish | Mill Finish |
Hastelloy C276 Tubing Chemical Composition
|
Element |
Content (%) |
|---|---|
|
Nickel, Ni |
57 |
|
Molybdenum, Mo |
15-17 |
|
Chromium, Cr |
14.5-16.5 |
|
Iron, Fe |
4-7 |
|
Tungsten, W |
3-4.50 |
|
Cobalt, Co |
2.50 |
|
Manganese, Mn |
1 |
|
Vanadium, V |
0.35 |
|
Silicon, Si |
0.080 |
|
Phosphorous, P |
0.025 |
|
Carbon, C |
0.010 |
|
Sulfur, S |
0.010 |
Hastelloy C276 Pipe Mechanical Properties
| Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
| 8.89 g/cm3 | 1370 °C (2500 °F) | Psi – 52,000 , MPa – 355 | Psi – 1,15,000 , MPa – 790 | 40 % |
Key Properties
Corrosion Resistance: C276 exhibits excellent corrosion resistance to reducing and oxidizing acids, wet chlorine, and ferric and cupric chlorides. Its high molybdenum and tungsten contents prevent localized corrosion, such as pitting and crevice corrosion.
Mechanical Properties: The alloy exhibits excellent mechanical properties, including high strength and exceptional high-temperature corrosion resistance, up to 1900°F (1038°C).
Weldability: Hastelloy C276 is weldable by conventional methods and resists grain boundary precipitation in the heat-affected zone, making it suitable for use in the as-welded condition.
Composition: It is a nickel-chromium-molybdenum alloy with the addition of tungsten and a low carbon content.
Common Applications
Chemical Processing: Widely used in chemical production, including processes involving strong acids and organic compounds.
Pollution Control: Its resistance to corrosive gases and chlorides makes it ideal for flue gas desulfurization systems and scrubbers.
Marine and Oil & Gas: Its excellent seawater corrosion resistance allows it to be used in seawater environments and offshore applications. Other Industries: Suitable for pulp and paper, pharmaceutical and food processing equipment.
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.
