347H stainless steel (07Cr18Ni11Nb) has good intergranular corrosion resistance, and has good corrosion resistance and heat resistance in alkali, seawater and various acid solutions.
347H stainless steel is used in petrochemical, synthetic fiber, food, paper and other industrial equipment, and is often used as a heat-resistant material, for example, exhaust manifolds and branch pipes of aero engines, hot gas pipes of turbo compressors, and small loads and temperatures not exceeding 850 Other parts that work in degrees Celsius can also be used as cores for welding nickel-chromium stainless steel.