N08811 / Incoloy 800HT / NS112B High Temperature Alloy Nut With Enhanced Creep And Stress Rupture 

N08811/Incoloy800HT/NS112B High-Temperature Alloy Nut With Enhanced Creep And Stress Rupture

The N08811 (Incoloy 800HT / NS112B) high-temperature alloy nut is a corrosion-resistant fastener designed for extreme environments. Made from nickel-iron-chromium alloy, it offers excellent strength, oxidation resistance, and carburization resistance at temperatures up to 1100°C (2012°F). Enhanced with titanium and aluminum, it provides superior structural stability and creep resistance. Commonly used in heat exchangers, power plants, furnace components, and petrochemical processing, it withstands harsh thermal cycling and stress conditions. Its high nickel content ensures resistance to chloride-induced stress corrosion cracking. Ideal for high-pressure and high-temperature fastening, N08811 nuts maintain integrity in aggressive environments, ensuring long-term reliability and safety in critical applications.

Trade Code

The N08811 (Incoloy 800HT / NS112B) High-Temperature Alloy Nut is designed for extreme heat and corrosive environments.

Here are its key features:

1. High-Temperature Resistance

• Withstands temperatures up to 1100°C (2012°F)
• Excellent creep and stress rupture strength
• Ideal for high-heat applications like furnaces, power plants, and petrochemical processing

2. Superior Corrosion Resistance

• Excellent resistance to oxidation and carburization in high-temperature atmospheres
• Performs well in environments with sulfur and chlorine exposure

3. Enhanced Mechanical Strength

• High tensile and yield strength at elevated temperatures
• Good structural stability for long-term service

4. Nickel-Iron-Chromium Alloy Composition

• Contains nickel (30-35%), iron, chromium (19-23%), and small amounts of aluminum and titanium
• Provides a balance of strength, oxidation resistance, and corrosion protection

The N08811 / Incoloy 800HT / NS112B high-temperature alloy is a nickel-iron-chromium alloy designed for excellent strength and oxidation resistance at elevated temperatures. When used in nut applications, this alloy provides exceptional performance in extreme environments.

Key Applications of N08811/Incoloy 800HT/NS112B Nuts:

• Petrochemical & Refining Industry

Used in furnaces, heat exchangers, and reformer tube supports.

Resistant to carburization and oxidation at high temperatures.

• Power Generation & Heat Treatment Equipment

Suitable for gas turbines, superheaters, and heat treatment fixtures.

Withstands thermal cycling and high stress conditions.

• Aerospace & Jet Engine Components

Ideal for fasteners in combustion chambers and exhaust systems.

Maintains mechanical strength in high-temperature environments.

• Nuclear & Chemical Processing

Used in reactor components and high-temperature chemical processing equipment.

Resists stress corrosion cracking and oxidation.

• Marine & Offshore Applications

Applied in heat exchangers and offshore processing equipment.

Excellent resistance to seawater corrosion and high-temperature oxidation.

Advantages of Using Incoloy 800HT Nuts:

✅ High Temperature Strength – Performs well above 1100°F (593°C).
✅ Oxidation & Carburization Resistance – Ideal for extreme heat applications.
✅ Good Creep & Stress Rupture Resistance – Suitable for high-stress environments.
✅ Corrosion Resistance – Resists chloride-induced stress corrosion cracking.