N08904

N08904, also known as 904L, is a high-alloy austenitic stainless steel characterized by its high levels of chromium, nickel, molybdenum, and copper. It is specifically designed to offer excellent corrosion resistance in various aggressive environments, including those containing sulfuric acid, chloride ions, and other corrosive substances. Here is a detailed description of N08904:

Chemical Composition:

• Chromium (Cr): 19.0-23.0%

• Nickel (Ni): 23.0-28.0%

• Molybdenum (Mo): 4.0-5.0%

• Copper (Cu): 1.0-2.0%

• Iron (Fe): Balance

• Manganese (Mn): ≤2.0%

• Silicon (Si): ≤0.7%

• Phosphorus (P): ≤0.045%

• Sulfur (S): ≤0.035%

Key Features and Characteristics:

1. Corrosion Resistance: N08904 offers outstanding resistance to corrosion in a wide range of aggressive environments, including sulfuric acid solutions, chloride-containing media (such as seawater), and acidic environments. Its high levels of chromium, nickel, molybdenum, and copper contribute to its exceptional corrosion resistance.

2. Pitting and Crevice Corrosion Resistance: The alloy exhibits excellent resistance to pitting and crevice corrosion, even in chloride-rich environments. This makes it suitable for use in marine applications, chemical processing, and other corrosive environments.

3. High Toughness and Ductility: N08904 maintains high toughness and ductility, even at low temperatures, which enhances its suitability for applications involving cryogenic conditions and thermal cycling.

4. High Temperature Strength: Despite its austenitic structure, N08904 retains good strength at elevated temperatures, making it suitable for applications where exposure to high temperatures is common.

5. Weldability: N08904 can be readily welded using conventional welding methods, providing ease of fabrication and assembly in various applications.

6. Formability: The alloy exhibits good formability, allowing it to be easily formed into various shapes and configurations for different applications.

Applications:

• Chemical processing equipment such as reactors, tanks, and piping systems

• Desalination plants and equipment for seawater processing

• Heat exchangers and condensers in power plants and petrochemical facilities

• Pulp and paper processing equipment, including digesters and bleach plants

• Oil and gas industry components such as pipelines, fittings, and pumps

• Marine engineering components including seawater piping, heat exchangers, and propeller shafts

N08904 (904L) is a highly corrosion-resistant stainless steel alloy suitable for a wide range of applications in aggressive environments. Its excellent corrosion resistance, combined with high toughness, weldability, and formability, makes it a preferred choice for demanding industrial applications across various industries.

Thickness:0.6/0.7