AMPCO 18.22 and 18.136 are variations of AMPCO 18 to produce a higher ultimate strength and to improve the impact resistance, respectively. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive and shear strength as well as fracture toughness and fatigue. It also includes information on casting. Filing Code: Cu-795. Producer or source: AMPCO Engineered Alloys.