In the realm of stainless steel, A240 317LN stands as a testament to superior performance and durability. This austenitic stainless steel grade, specified under the ASTM A240 standard, offers a unique combination of mechanical properties, chemical composition, and heat treatment characteristics, making it a preferred choice for a wide range of applications.

Mechanical Properties and Chemical Composition

The mechanical properties of A240 317LN stainless steel plates are truly remarkable. With a tensile strength of at least 550 MPa and a yield strength of 240 MPa, these plates exhibit excellent resistance to deformation under load. The elongation rate of over 40% ensures ductility and flexibility, while the hardness, typically not exceeding 217 HBW, ensures durability.

The chemical composition of A240 317LN is carefully balanced to provide its superior properties. It contains chromium (Cr) in the range of 19.0% to 23.0%, nickel (Ni) from 9.0% to 13.0%, and molybdenum (Mo) between 2.0% and 3.0%. These elements, along with strict limits on carbon (C), silicon (Si), manganese (Mn), phosphorus (P), and sulfur (S), contribute significantly to the alloy's corrosion resistance and overall performance.

Heat Treatment State

The heat treatment process of A240 317LN stainless steel plates is crucial to its final properties. The plates undergo a solution treatment, typically at temperatures ranging from 1050°C to 1150°C, followed by rapid cooling to prevent recrystallization and maintain the solid solution. Annealing treatments at temperatures between 850°C and 950°C can be employed to improve the material's toughness and ductility, while stress relief annealing at temperatures of 550°C to 650°C helps reduce internal stresses and enhance stability.

Size Range and Impact Testing

A240 317LN stainless steel plates are available in a wide range of sizes, catering to diverse application requirements. The plates undergo rigorous impact testing to ensure their resilience and toughness. These tests, such as Izod, bending, and Charpy impact tests, evaluate the material's resistance to fracture under impact loads, providing crucial data for product design and quality assurance.

Primary Applications

The versatility of A240 317LN stainless steel plates is evident in its diverse applications. In the chemical industry, it is widely used in equipment such as reactors, tanks, pipes, and valves due to its excellent corrosion resistance. The oil and gas sector also relies on A240 317LN for components that must endure harsh environments and high temperatures. In food processing and pharmaceutical manufacturing, its hygiene and corrosion resistance make it a preferred choice for storage tanks, pipelines, and reactors.

TJC Steel Group Supply Cases

At TJC Steel Group, we have a proud history of supplying A240 317LN stainless steel plates to customers across various industries. Our expertise in material selection, processing, and quality assurance ensures that our products meet the highest standards of performance and reliability. Whether it's for a chemical reactor, an oil pipeline, or a food storage tank, we provide the right materials to meet your specific needs.

In conclusion, A240 317LN stainless steel plates offer a unique combination of mechanical properties, chemical composition, and heat treatment characteristics that make them ideal for a wide range of applications. With TJC Steel Group as your trusted supplier, you can rest assured that you're getting the best materials for your project.