ASME SB622 UNS N10276 / 2.4819 Nickel Alloy Tube Seamless Hastelloy C276 Tube End Treaded
ASTM B622/ ASME SB622 C276 / UNS N10276 / DIN 2.4819 Seamless Nickel Alloy Tube
Hastelloy C276 , its elevated nickel and molybdenum levels provide strong protection against pitting and crevice corrosion in reducing conditions, while the chromium content offers resistance to oxidizing agents. Additionally, the low carbon content helps prevent carbide precipitation during welding, preserving the corrosion resistance of welded structures. This alloy also resists the formation of grain boundary precipitates in the heat-affected zone during welding, making it ideal for many chemical processing applications in its as-welded state.
In summary, seamless tubes made from Hastelloy C-276 (UNS N10276 / 2.4819) according to ASTM B622 / ASME SB622 represent the gold standard for corrosion resistance in the most severe industrial environments, particularly where high pressure, high temperature, and the absence of a weld seam are critical requirements.
ASME SB622 Hastelloy C276 / UNS N10276 Nickel Alloy Tube Equivalent Grade
| STANDARD | UNS | WNR. | AFNOR | EN | JIS | OR | GOST |
| Hastelloy C276 | N10276 | 2.4819 | - | NiMo16Cr15W | NW 0276 | ЭП760 | ХН65МВУ |
ASME SB622 Hastelloy C276 / UNS N10276 Nickel Alloy Tube 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 |
ASME SB622 Hastelloy C276 / UNS N10276 Nickel Alloy Tube 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 % |
The Key Properties of C276 Nickel Alloy Seamless Tube
Corrosion Resistance:
- Exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking.
- Resistant to a wide range of corrosive environments, including acids (such as hydrochloric, sulfuric, and phosphoric acids).
Mechanical Properties:
- Tensile Strength: Typically around 70,000 psi (or more), depending on the specific treatment and processing.
- Yield Strength: Approximately 30,000 psi (or higher).
- Elongation: Generally around 30%, indicating good ductility.
High-Temperature Performance:
- Maintains mechanical integrity and resistance to oxidation and sulfidation at elevated temperatures.
Applications
1. Pollution control stack liners, ducts, dampers, scrubbers, stack-gas reheaters, fans and fan housings.
2. Flue gas desulfurization systems.
3. Chemical processing components like heat exchangers, reaction vessels, evaporators, and transfer piping.
4. Sour gas wells.
5. Pulp and paper production.
6. Waste treatment.
7. Pharmaceutical and food processing equipment.
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