2207 stainless steel sheet

Chemical composition

Key features:

Biphase structure: about 50% austenite + 50% ferrite, with high strength (yield strength ≥550MPa) and good toughness.

Corrosion resistance:

High PREN value (≥40) : PREN = %Cr + 3.3×%Mo + 16×%N, resistant to chloride stress corrosion cracking (SCC) and pitting.

Application field:

Suitable for seawater, chemical industry, oil and gas and other harsh environment.

Submarine pipelines, heat exchangers, desalination equipment, chemical containers, etc.

The advantages of duplex steel 2507 are mainly reflected in the following aspects:

1. Excellent corrosion resistance: Duplex steel 2507, due to its special alloy composition, has extremely high corrosion resistance, especially in environments with high chloride content. This makes it ideal for use in Marine engineering, chemical equipment and other fields that require highly corrosion-resistant materials.

2. High strength and toughness: 2507 duplex steel combines the advantages of austenitic and ferritic steel, with high strength and good toughness. This means that it can be used in high-pressure environments and maintains good mechanical properties at low temperatures.

3. Good wear resistance: Due to its high hardness, duplex steel 2507 performs well in wear environments and is suitable for applications where wear-resistant materials are required.

4. Low coefficient of thermal expansion: Compared with austenitic stainless steel, duplex steel 2507 has a lower coefficient of thermal expansion, which makes it able to maintain better dimensional stability in an alternating hot and cold environment.

5. Economic benefits: Although the initial cost may be high, due to its long life and low maintenance requirements, duplex steel 2507 can bring significant economic benefits in many applications.

The corrosion resistance of duplex steel 2507 is mainly reflected in the following aspects:

1. Resistance to pitting and crevices: Due to its high content of chromium, molybdenum and nitrogen, duplex steel 2507 has extremely high resistance to pitting and crevices in chloride environments. This makes it perform well in seawater or chloride-containing environments.

2. Resistance to stress corrosion cracking: Compared with austenitic stainless steel, duplex steel 2507 has better resistance to chloride stress corrosion cracking. This is because the presence of its ferritic phase improves the strength and toughness of the material.

3. Uniform corrosion resistance: Duplex steel 2507 shows good uniform corrosion resistance in a variety of acidic environments, such as sulfuric acid, phosphoric acid, etc. It is also stable in low pH environments.

4. Wear and erosion resistance: In addition to chemical corrosion, duplex steel 2507 also performs well under mechanical wear and erosion conditions. This makes it very popular in applications that require high strength and wear resistance.

Duplex steel 2507 is a high strength, corrosion resistant alloy material, widely used in the following areas:

1. Marine engineering: Due to its excellent corrosion resistance, duplex steel 2507 is commonly used in structural parts in the Marine environment, such as offshore platforms, ship components and submarine pipelines.

2. Chemical industry: The material can resist the erosion of many chemicals, so it is used in chemical plants to make storage tanks, reactors and piping systems.

3. Oil and gas industry: Duplex steel 2507 is suitable for equipment under high pressure and high temperature conditions, such as oil well pipelines and refining equipment.

4. Pulp and paper industry: Due to its corrosion resistance and strength, this steel is used in digesters and scrubbers in paper making equipment.

5. Food processing: In the food industry, it is used to manufacture equipment that requires high hygiene standards, such as processing containers and conveying pipes.