A vacuum pump includes a housing having an inlet port, a stator column provided upright inside the housing, a rotating body having a shape surrounding an outer periphery of the stator column, a support means for rotatably supporting the rotating body, and a driving means for driving the rotating body to rotate, wherein gas is sucked in from the inlet port by rotation of the rotating body, and the stator column is constituted of a cast material of aluminum alloy having a mechanical material property of an elongation of 5% or more.