High-accuracy aluminum alloy wave canal and manufacturing method thereof

A high-precision aluminium alloy waveguide and its preparation method are disclosed. The invention solves the problem that surface quality, surface smooth finish, tensile strength and plasticity of the existing waveguide can not satisfy the operating requirement of today's high-tech field. The high-precision aluminium alloy waveguide comprises, based on mass percentage, Si: 0.50%-0.70%, Fe: of tensile strength.