Its high alloy composition makes it resistant to pitting and corrosion in a wide variety of environments. In the meantime, the welding properties of 904L are built on its low carbon content. Many companies in the chemical, pharmaceutical, oil and gas, and energy industries use UNS NO8904 Round Bars.
Tanks, valves, heat exchangers, flanges, and manifolds are all common uses. When copper is added to 904L, it makes it better for parts like tanks and other things that are used to handle sulphuric and phosphoric acids.