Incoloy800H/NS112A/UNS N08810/1.4876 High-Temperature Alloy Nut For Oxidation Carburization and Sulfidation Resistance

Incoloy 800H is a high-temperature, corrosion-resistant alloy primarily composed of nickel, iron, and chromium. It is an advanced version of Incoloy 800, with controlled carbon content (0.05–0.10%) and grain size optimization for enhanced creep and rupture strength. This alloy offers excellent resistance to oxidation, carburization, and sulfidation at elevated temperatures up to 1100°C (2012°F). It is widely used in heat exchangers, furnace components, petrochemical processing, and power generation applications.

NS112A, UNS N08810, and 1.4876 are equivalent designations, ensuring global standard compliance. Incoloy 800H bars are available in various diameters and lengths, with good weldability and formability. Their mechanical stability and resistance to high-temperature corrosion make them ideal for demanding environments.

Trade Code

Incoloy 800H (also known as NS112A, UNS N08810, and 1.4876) is a high-temperature, corrosion-resistant nickel-iron-chromium alloy. It is specifically designed for applications requiring excellent mechanical properties at elevated temperatures. Below are the key features of Incoloy 800H Bar:

Key Features

• High-Temperature Strength

Maintains excellent mechanical properties in temperatures up to 1100°C (2012°F).

Provides superior creep and stress rupture resistance due to controlled carbon and grain size.

• Excellent Corrosion Resistance

Resists oxidation and carburization in high-temperature environments.

Strong resistance to sulfidation and chloride stress corrosion cracking.

• Superior Creep Resistance

Higher creep and rupture strength compared to Incoloy 800, thanks to its higher carbon content (0.05–0.10%) and grain size control.

• Good Fabricability & Weldability

Easily formed, machined, and welded using conventional techniques.

Compatible with standard welding processes like GTAW (TIG), GMAW (MIG), and SMAW.

• Excellent Structural Stability

Maintains metallurgical stability in prolonged exposure to high temperatures.

Does not undergo embrittlement due to sigma phase formation.

Incoloy 800H (also known as NS112A, UNS N08810, and 1.4876) is a high-temperature, corrosion-resistant alloy primarily composed of nickel, iron, and chromium. This alloy is designed for excellent resistance to oxidation, carburization, and other high-temperature corrosion processes while maintaining good mechanical properties at elevated temperatures.

Applications of Incoloy 800H Bars

Due to its high-temperature strength and corrosion resistance, Incoloy 800H bars are commonly used in:

1. Heat Exchangers and Process Equipment

• Used in heat exchangers, piping, and components in chemical and petrochemical industries.
• Ideal for handling corrosive environments involving sulfur compounds, nitrogen-based compounds, and oxidation.

2. Furnace and Thermal Processing Equipment

• Structural supports, furnace muffles, and retorts in heat treatment plants.
• Rolls, trays, and fixtures used in high-temperature applications such as carburizing, annealing, and stress relieving.

3. Power Generation and Nuclear Industry

• Components for superheater and reheater tubes in power plants.
• Used in nuclear reactors due to its stability in high-radiation environments.

4. Oil and Gas Industry

• Piping and tubing for steam reforming plants and hydrocarbon processing.
• Gas turbine components due to its ability to withstand high-pressure and high-temperature conditions.

5. Aerospace Industry

• Used in aircraft and aerospace applications requiring high-temperature strength and oxidation resistance.

6. Chemical and Petrochemical Processing

• Reactor vessels, piping systems, and heat exchanger tubes exposed to aggressive chemicals.
• Applications involving nitric acid, organic acids, and chloride-containing solutions.

7. Automotive and Transportation

• Exhaust systems and catalytic converter components requiring high-temperature strength and oxidation resistance.