Cromotherme 91 (AWS Code: SFA 5.5 E9015-B91) is meant for the SMAW process with a focus on the Power plantsas its main application.Cromotherme-91 is 9Cr - 1Mo, non-synthetic, low hydrogen electrode modified with Aluminium, Niobium, Vanadium and Nitrogen designed to provide improved creep strength, toughness, fatigue life, oxidation and corrosion resistance at elevated temperatures. It is designed to weld the materials in power plant and refineries. Following are some of the steels that can be welded with this electrode. Plate: A 387 Gr. 91, Pipes: A 335 - P91, Tubes: A 213 - T91 This product is know for its Specially for creep resistant P91 Materials, Non-synthetic electrode, modified with Aluminium, Niobium, Vanadium and Nitrogen designed to provide improved creep strength, toughness, fatigue life, oxidation and corrosion resistance at elevated temperatures.. It is used by companies like NTPC, BHEL, L&T Power.