CYLINDER LINER FOR INSERT CASTING

An object of the present invention is to provide a cylinder liner for insert casting that can improve the joining strength between a cylinder liner and a cylinder block by reducing voids generated between the cylinder liner and the cylinder block. [0002] The above-described problem can be solved when the molten metal running index YI defined by the following Formula (1) is from 2.2 to 14.5. Molten metal running index YI = area ratio S t % of top portions of protrusions × molten metal infiltration volume V mm 3 / surface area A mm 2 of cylinder liner base / average surface-to-surface distance P av between top portions of protrusions mm