Turbo charger bearing

The invention relates to a turbocharger for an internal combustion engine, in which a bearing having excellent abrasion resistance without generating a black corrosion product in a high-temperature oil environment is provided. As bearing materials of a turbocharger, a copper alloy material containing, as main components, Cu, Zn, Al, Mn, and Si is employed. The elongating direction of an Mn-Si compound crystallized in the alloy material is set to the axial direction of a rotary shaft with respect to a radial bearing (10) and is set to the direction perpendicular to the rotary shaft (3) with respect to a thrust bearing (11).