Incoloy 800HT, also known as Alloy 800HT, N08811, and W.Nr. 1.4959, is a nickel-iron-chromium alloy with excellent strength and exceptional resistance to oxidation, carburization, and other high-temperature corrosive environments. This nickel-iron-chromium alloy is designed for applications requiring high creep and rupture properties at elevated temperatures. Incoloy 800HT is particularly suitable for use in environments with aggressive oxidation and carburization conditions, making it a popular choice for applications such as industrial furnaces, petrochemical processing, and heat-treating equipment. Additionally, it is well-suited for use in nitric acid and organic acid processing due to its corrosion resistance.
Whatsapp:
+8615900526263E-mail:
sales@cocessalloys.comChemical Composition
|
Nickel (Ni) |
30.0-35.0 % |
|
Chromium (Cr) |
19.0-23.0 % |
|
Iron (Fe) |
39.5 % min |
|
Carbon (C) |
0.06-0.10 % |
|
Manganese (Mn) |
1.50 % max |
|
Sulfur (S) |
0.015 % max |
|
Silicon (Si) |
1.0 % max |
|
Copper (Cu) |
0.75 % max |
|
Aluminum (Al) |
0.15-0.6 % |
|
Titanium (Ti) |
0.15-0.6 % |
Physical Properties
| Density | lb/in3 | 0.287 |
| g/cm3 | 7.94 | |
| Melting Rang | °F | 2475-2525 |
| °C | 1357-1385 | |
| Specific Heat, | (32-212°F), Btu/lb•°F | 0.11 |
| (0-100°C), J/kg•°C | 460 | |
| Permeability at 70°F (21°C) and 200 oersted (15 | 9 kA/m) | |
| Annealed | 1.014 | |
| Hot-Rolled | 1.009 | |
| Curie Temperature, | °F | -175 |
| °C | -115 |
Mechanical Properties
|
Temperature |
Yield strength |
Tensile strength |
Elongation |
|||
|
Rp 0.2 |
Rm |
A |
||||
|
°C |
°F |
MPa |
Ksi |
MPa |
ksi |
% |
|
20 |
68 |
170 |
24.7 |
450-700 |
65.3-101.5 |
Longit. 35 Transverse 30 |
Incoloy 800HT is commonly used in a variety of high-temperature applications, including:
1. Industrial Furnaces: The alloy is frequently employed in industrial furnace applications, such as radiant tubes, muffles, and other high-temperature furnace components, due to its exceptional resistance to oxidation and carburization.
2. Petrochemical Processing: Incoloy 800HT finds application in the petrochemical industry, particularly in components exposed to high-temperature and corrosive environments, including catalyst grid supports, furnace baffles, and related equipment.
3. Heat-Treating Equipment: The alloy is utilized in heat-treating equipment where elevated temperatures and resistance to oxidation and carburization are crucial, making it suitable for applications such as trays, baskets, and fixtures.
4. Nitric Acid and Organic Acid Processing: Incoloy 800HT is well-suited for environments involving nitric acid and organic acid processing due to its resistance to corrosion in such chemical environments.
5. Power Generation: The alloy is also used in power generation applications, including steam superheater and reheater tubing systems, where it provides excellent high-temperature strength and resistance to oxidation and carburization.
Specifications for Incoloy 800HT include the following:
|
Bar and Rod |
Forgings |
Seamless Pipe and Tube |
Welded Pipe and Tube |
Plate, Sheet, and Strip |
Fittings |
|
ASTM B 408 & ASME SB 408 |
ASTM B 564 & ASME SB 564 |
ASTM B 163/B 407 & ASME SB 163/ SB 407 |
ASTM B 514/B 515 & ASME SB 514/ SB 515 |
ASTM B 409 & ASME SB 409 |
ASTM B 366/ASME SB 366 |
Standard product forms of Incoloy 800HT are pipe, tube, sheet, strip, plate, round bar, flat bar, forging stock, hexagon and wire. The products are available in a wide variety of sizes. Please contact us at sales@cocessalloys.com for full information.
