ACO Eurobar EN-GJL-300C (5.1308) is a higher-tensile-strength gray cast iron that is produced by the continuous casting process. It provides a combination of high strength while still maintaining good thermal conductivity compared with other types of cast iron. This grade approaches the maximum tensile strength attainable in gray cast iron. This datasheet provides information on composition, physical properties, microstructure, hardness, elasticity, and tensile properties. It also includes information on wear resistance as well as heat treating and machining. Filing Code: CI-99. Producer or source: ACO Eurobar GmbH (a subsidiary of ACO Guss GmbH).