ISO 185/JL/250 is an intermediate-tensile-strength gray cast iron that has a pearlitic matrix and a tensile strength of 250–350 MPa (36–51 ksi), when determined on test pieces machined from separately cast, 30 mm (1.2 in.) diameter test bars. Compared with the lower strength gray cast iron grades, ISO 185/JL/250 contains lower carbon and silicon contents and has superior wear resistance, while still maintaining good thermal conductivity, damping capacity, and machinability. This datasheet provides information on composition, physical properties, and tensile properties as well as fatigue. It also includes information on casting and heat treating. Filing Code: CI-76. Producer or source: ISO Central Secretariat.

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