Types G-1 and G-2 gray iron bar and plate produced by continuous casting have consistent density and hardness with improved toughness, providing greater durability and more dependable performance than conventionally cast grades. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive strength. It also includes information on heat treating and machining. Filing Code: CI-57. Producer or source: Federal Bronze Products Inc..