Tubular stainless steel Sanicro® 31HT

high-performancecorrosion resistant

Sanicro® 31HT is an austenitic, nickel-iron-chromium stainless steel combining good resistance to high-temperature corrosion with high mechanical strength. Developed for severe, high-temperature environments, Sanicro® 31HT can be used at temperatures up to 1100°C (2010°F) in oxidizing atmospheres. The grade performs exceptionally well in different combustion and synthesis gases and also has good resistance to carburization and isothermal and cyclic oxidation. Typical applications for Sanicro® 31HT include muffle tubes for wire annealing furnaces, furnace tubes and heat exchangers. Excellent nitridation resistance One of the most distinguishing characteristics of Sanicro® 31HT is its excellent resistance to nitrogen absorption at high temperatures. This is due to the relatively high chromium and nickel contents and makes this grade a recommended material for use in cracked ammonia (NH3) and hydrogen (H2). The nickel content also contributes to very good structural stability, including very good ductility and high creep strength. Main characteristics of Sanicro® 31HT High creep strength Very good resistance to oxidation Good resistance to combustion gases Very good resistance to carburization Excellent resistance to nitrogen absorption Good structural stability at high temperatures Good weldability