Crown 91 is excellent for TIG welding 9% Chrome Moly modified steels with small additions of vanadium and niobium (columbium). This alloy is designed to provide high strength, toughness and is resistant to fatigue, corrosion and oxidation at elevated temperatures. Crown 91 is used to join P91 alloys in its many forms including A213-T91 tubes, A335-P91 pipe, A387 Grade 91 plate and A182-F91 forgings. Crown 91 is designed for improved long term creep properties in heavy wall components such as headers, main steam piping and turbine rotors in fossil fueled power-generating plants. P91 alloys and Crown 91 are higher alloyed steels that enable plants to operate at higher temperatures and pressures, thus increasing operating efficiency.

Please Note: Welding fumes and gases can be hazardous to your health. . Both the manufacturer and Welding Supplies from IOC recommends that you read and understand the Material Safety Data Sheets and product warning statements prior to using this product.