S30815 is a high-temperature resistant austenitic stainless steel that is also known as Grade 253MA. It is a type of stainless steel that contains high amounts of chromium, nickel, and nitrogen, which provide excellent resistance to high-temperature oxidation and corrosion.

This material is specifically designed for use in high-temperature applications such as furnace components, heat exchangers, and gas turbines, where it can operate in temperatures up to 1150°C (2100°F) without losing its strength and resistance to oxidation.

S30815 has good weldability and formability, and it can be easily fabricated into various shapes and sizes. It is also known for its excellent thermal conductivity and resistance to thermal shock, making it an ideal choice for high-temperature applications.

Overall, S30815 is a high-performance austenitic stainless steel that offers excellent corrosion resistance and high-temperature strength, making it a popular choice for use in various industries such as chemical processing, power generation, and aerospace.