ISO 185/JL/150 is an unalloyed low-tensile-strength gray cast iron that has high carbon and silicon contents, and thus the highest thermal conductivity and damping capacity. It is, therefore, useful in situations where high thermal conductivity, damping capacity, and machinability are important, but where tensile strength and hardness are not the crucial properties in service. The high carbon content of this material also imparts good lubricated bearing properties. This datasheet provides information on composition, physical properties, tensile properties, shear and bend strength as well as fatigue. It also includes information on casting, heat treating, and machining. Filing Code: CI-67. Producer or source: International Organization for Standardization.