heat resistant steel

Heat resistant steel is a stable stainless steel that provides excellent resistance to the precipitation of chromium carbides exposed to high temperatures under intergranular corrosion, ranging from 800 to 1500 ° F (427 to 816 ° C), which is its main advantage. Alloy heat-resistant steel is stabilized by adding titanium to prevent the formation of chromium carbide.

Heat resistant steel is advantageous for high-temperature services due to its excellent mechanical properties. Alloy 321 stainless steel has higher creep resistance and stress fracture resistance than 304 alloy, and it may also be considered a risk due to concerns about intergranular corrosion.

Heat resistant steel can be divided into two categories based on its properties: anti-oxidation steel and heat strength steel. Anti oxidation steel, also known as non skinning steel. Hot strength steel refers to steel that has good oxidation resistance and high high-temperature strength at high temperatures. Heat resistant steel can be divided into austenitic heat-resistant steel, martensitic heat-resistant steel, ferritic heat-resistant steel, and pearlite heat-resistant steel according to its normalized structure.

Common heat-resistant steel and heat-resistant steel castings include: furnace bottom plate, fan blades, material frame, protective plate, furnace tank, carburizing furnace tank, mesh belt furnace tank, vacuum furnace tank, lifting device, furnace grate, furnace bar, material tray, shaft, box body, crucible, tank seat, basket seat, pressure ring, main shaft, hanging device, guide plate, lifting ear, lining plate, fan shaft, etc.