Acid-resistant steel is a type of steel alloy that is highly resistant to corrosion and wear caused by acidic environments. It is typically composed of stainless steel, alloyed with other elements such as chromium, nickel, and molybdenum to increase its resistance to acidic materials. Acid-resistant steel is well-suited for applications in highly corrosive environments, such as chemical plants, food processing facilities, and other industries where acid-resistance is needed.