Rustproof and acid-resistant cast steel with 29 % Cr and a coarse-grain microstructure outstanding for its high resistance to wear and chemicals and for its good emergency running properties. Further improvement of the chemical resistance is possible by alloying with molybdenum. Cast Cr-steel can be magnetized but cannot be welded. It is used as a face material mainly in the pressure range up to approximately 16 bar. For material characteristics materials for miscellaneous construction parts.