253 ma is a kind of heat resistant Austenitic stainless steel (Austenitic stainless steel), for high creep strength, creep
strength and good resistance to corrosion of application and design.
The chemical composition of 253MA is balanced, so that the steel has the most suitable comprehensive performance in the temperature range of 850℃-1100℃, extremely high oxidation resistance, oxidation skin temperature up to 1150℃;High creep resistance and creep fracture strength;It has good resistance to high temperature corrosion and resistance to brush scale corrosion in most gas media.High yield strength and tensile strength at high temperature;Good formability and weldability, and enough machinability.
In addition to the alloying elements chromium and nickel, 253MA stainless steel also contains a small amount of Rare Earth Metals (REM), significantly improving its antioxidant capacity.Nitrogen was added to improve creep properties and to make the steel a complete austenite.Although relatively low in chromium and nickel, this stainless steel has in many cases the same high temperature properties as high-alloyed alloy steels and nickel-based alloys.