Alloy 904L (UNS N08904) is a superaustenitic stainless steel that is designed for moderate to high corrosion resistance in a wide range of process environments. The combination of high chromium and nickel content, coupled with additions of molybdenum and copper, assure good to excellent corrosion resistance. Alloy 904L was originally developed to withstand environments containing dilute sulfuric acid. It also offers good resistance to other inorganic acids such as hot phosphoric acid as well as most organic acids. Alloy 904L is easily welded and processed by standard shop fabrication practices.
Stainless Steel 904L round bars is a non-stabilized low carbon high alloy austenitic stainless steel. SS 904L Round Bars is also resistant to stress corrosion cracking and crevice corrosion. SS 904L Bars is used extensively in the chemical process industry including the production of phosphate-based fertilizers.