AISI 347

 　　347/347H stainless steel 347 stainless steel plate, 347 stainless steel plate, TP 347H steel pipe alloy 347 and 347H are a high carbon niobium stabilized austenitic stainless steel with added niobium. The addition of element Nb endows TP347H with excellent intergranular corrosion performance, especially for corrosive media such as acids, alkalis, and salts. Widely used in heat exchangers, superheater tubes, reheater tubes, and steam tubes in industries such as power generation, petroleum, chemical, synthetic fiber, food, and paper making. The element Nb is less prone to burning than Ti, so it can be used as a welding rod for Cr Ni austenitic stainless steel. Similar to 18-8 austenitic stainless steel containing Ti, 347H grade stainless steel has higher high-temperature strength and better oxidation resistance than 316 stainless steel

　　347H belongs to the American standard austenitic stainless steel, executed according to ASTM A240/A240M-2017

　　347H has excellent corrosion resistance, welding performance, and thermal strength performance. Used for large boiler superheaters, reheaters, steam pipelines, and heat exchanger fittings in petrochemical industry.



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