AISI 347H Stainless Steel Plate SUS347H 1.4961

347H Stainless Steel Plate/Sheet Details

Overview

347H stainless steel plate/sheet is an austenitic stainless steel alloy that is highly resistant to high-temperature oxidation and corrosion. It is a high-carbon version of the 347 grade, specifically designed for use in high-temperature environments where strength and resistance to carbide precipitation are essential.

Key Characteristics

High-Temperature Resistance: Excellent resistance to oxidation and maintains strength at high temperatures up to approximately 1500°F (815°C).

Corrosion Resistance: Provides good resistance to corrosion and oxidation in high-temperature and aggressive environments.

Stabilized with Columbium (Niobium): The addition of columbium (niobium) stabilizes the steel, preventing carbide precipitation and improving high-temperature stability.

Mechanical Properties: Offers high strength and good ductility at elevated temperatures.

Formability: Can be easily fabricated through welding, machining, and forming processes.

Chemical Composition

Carbon (C): ≤ 0.04%

Manganese (Mn): ≤ 2.00%

Silicon (Si): ≤ 1.00%

Phosphorus (P): ≤ 0.045%

Sulfur (S): ≤ 0.03%

Chromium (Cr): 17.0-19.0%

Nickel (Ni): 9.0-12.0%

Columbium (Nb): 0.5-1.0%

Nitrogen (N): ≤ 0.10%

Common Applications

High-Temperature Equipment: Used in equipment and components exposed to high temperatures, such as furnace parts, heat exchangers, and reactors.

Chemical Processing: Employed in chemical processing equipment that requires resistance to high temperatures and aggressive chemicals.

Petrochemical Industry: Suitable for use in petrochemical processing units where resistance to high temperatures and corrosion is crucial.

Exhaust Systems: Ideal for components in exhaust systems that operate under high-temperature conditions.

Power Generation: Utilized in power generation facilities for components like turbines and boilers.

Advantages

Superior High-Temperature Resistance: Maintains strength and resists oxidation at high temperatures, making it suitable for extreme conditions.

Good Corrosion Resistance: Effective against corrosion in high-temperature and aggressive environments.

Stabilized Against Carbide Precipitation: Columbium (niobium) addition stabilizes the steel, preventing carbide precipitation during welding and high-temperature exposure.

High Strength and Ductility: Offers excellent mechanical properties, including high strength and good ductility at elevated temperatures.

Summary

347H stainless steel plate/sheet is a high-performance material designed for demanding high-temperature applications. Its exceptional resistance to oxidation, corrosion, and carbide precipitation, combined with high strength and formability, makes it an ideal choice for use in high-temperature industrial environments.

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Common surfaces

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