In the realm of stainless steel, A240 309H stands out as a premium material for applications requiring exceptional corrosion resistance and high-temperature performance. Manufactured in accordance with the ASTM A240/A240M-2020 standard, this chromium-nickel stainless steel plate is an excellent choice for a wide range of demanding applications.

Mechanical Properties

The A240 309H stainless steel plate possesses exceptional mechanical properties, making it suitable for rigorous environments. It exhibits a tensile strength ranging from 540 to 750 MPa, ensuring robust durability. The yield strength lies between 260 and 310 MPa, indicating its ability to withstand significant loads without permanent deformation. Furthermore, its elongation rate of 40 to 45% ensures flexibility and ductility, critical in applications involving deformation or vibration.

Chemical Composition

The key to the exceptional performance of A240 309H lies in its optimized chemical composition. It contains a chromium content of 20-24%, which provides excellent corrosion resistance. The nickel content ranges from 12-15%, enhancing its resistance to oxidation and improving its high-temperature strength. Additionally, the inclusion of 2-3% molybdenum further enhances corrosion resistance, particularly in acidic environments. The titanium content of 0.6-1.1% stabilizes the steel, minimizing carbide precipitation and improving weldability.

Heat Treatment

The A240 309H stainless steel plate undergoes rigorous heat treatment to achieve its desired mechanical properties. Solution treatment, involving heating to 1010-1120°C and rapid cooling, improves corrosion resistance and welding characteristics. The subsequent aging treatment, which involves holding the material at room temperature for a period, enhances the strength and hardness by promoting precipitation hardening.

Size Range

The A240 309H stainless steel plate is available in a wide range of sizes to cater to diverse application requirements. Common thicknesses range from 0.3mm to 50mm, with widths typically varying between 1000mm and 2000mm. The length can be customized based on specific project needs, with common lengths including 2000mm, 2438mm, 2500mm, and 3000mm.

Impact Testing

To ensure the reliability of A240 309H stainless steel plate in critical applications, it undergoes rigorous impact testing. This test measures the material's ability to withstand sudden, high-energy impacts, simulating real-world conditions. The results of these tests indicate the plate's toughness and resistance to fragmentation, crucial in applications involving dynamic loading or shock events.

Applications

The A240 309H stainless steel plate finds widespread application in industries where corrosion resistance and high-temperature performance are paramount. It is commonly used in the petrochemical, nuclear, and aerospace industries for the manufacture of pressure vessels, heat exchangers, pipes, and other critical components. The plate's excellent resistance to oxidation and scaling at elevated temperatures makes it ideal for use in furnaces, boilers, and other high-temperature equipment.

TJC Steel Group Supply Case

At TJC Steel Group, we have a robust supply chain and extensive experience in handling A240 309H stainless steel plate. We have successfully supplied this material to numerous projects across various industries, including the petrochemical and nuclear sectors. Our customers appreciate our ability to provide high-quality material, timely delivery, and competitive pricing. We pride ourselves on our commitment to customer satisfaction and strive to deliver exceptional value to our clients.