Hastelloy Flange , ASTM B564 UNS N10276 / C276 Nickel Alloy Slip On Flange SORF
ASTM B564 UNS N10276 Hastelloy C276 Nickel Alloy Flange SORF Flange
Alloy C276, also known as Hastelloy C276 /UNS N10276, is a nickel-molybdenum-chromium alloy that is widely used for its excellent corrosion resistance and high strength at elevated temperatures. This material is a reliable choice for industries dealing with corrosive substances and extreme conditions. such as chemical processing, oil and gas, and pollution control applications, ensuring durability in harsh environments.
Equivalent Grades for ASTM B564 Hastelloy C276 Nickel Alloy Forged Flange
| STANDARD | UNS | WNR. | AFNOR | EN | JIS | OR | GOST |
| Hastelloy C276 | N10276 | 2.4819 | - | NiMo16Cr15W | NW 0276 | ЭП760 | ХН65МВУ |
ASTM B564 Hastelloy C276 Nickel Alloy Forged Flange Chemical Composition
| Hastelloy C276 | Ni | C | Mo | Mn | Si | Fe | P | S | Co | Cr |
| Balance | 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 |
ASTM B564 Hastelloy C276 Nickel Alloy Forged Flange 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 % |
Manufacturing Process
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Flanges are hot or cold forged to ensure structural integrity.
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Post-forging heat treatment (solution annealing) to optimize corrosion resistance and mechanical properties.
What are the characteristics of Hastelloy C276?
1. Excellent corrosion resistance in reducing environments
2. Exceptional resistance to strong solutions of oxidizing salts, such as ferric and cupric chlorides
3. High nickel and molybdenum contents providing good corrosion resistance in reducing environments
4. Low carbon content which minimizes grain-boundary carbide precipitation during welding to maintain resistance to corrosion in heat-affected zones of welded joints
5. Resistance to localized corrosion such as pitting and stress-corrosion cracking
6. One of few materials to withstand the corrosive effects of wet chlorine gas, hypochlorite and chlorine dioxide
Applications
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Chemical & Petrochemical: Reactors, pipelines, acid storage.
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Oil & Gas: Offshore platforms, sour gas environments (H₂S).
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Marine: Seawater handling systems.
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Pharmaceuticals: Aggressive chemical processing.
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Pollution Control: Flue gas desulfurization (FGD) systems.
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