Titanium alloy having high strength, high young's modulus, excellent fatigue properties, and excellent impact toughness

An α+β titanium alloy hot-rolled sheet having excellent hot workability, the α+β titanium alloy hot-rolled sheet consisting of, in mass %, Al:

• 4.7 to 5.5%, Fe:
• 0.5 to 1.4%, N:
• less than or equal to 0.03%, [O]eq calculated using Expression (1):
• more than or equal to 0.13% and less than 0.25%, Si:
• 0.15 to 0.40%, a ratio of Si/O:
• 0.80 to 2.80, and the balance:
• Ti and impurities, wherein,
• in a case where an ND direction represents a normal direction of a rolling surface of the hot-rolled sheet, an RD direction represents a hot-rolling direction of the hot-rolled sheet, a TD direction represents a sheet-width direction of the hot-rolled sheet, a c-axis orientation represents a normal direction of a (0001) plane in an α phase, θ represents an angle between the c-axis orientation and the ND direction, φ represents an angle between a plane including the c-axis orientation and the ND direction and a plane including the ND direction and the TD direction, XND represents a strongest intensity among X-ray (0002) reflection relative intensities of crystal grains in which the angle θ is more than or equal to 0 degree and less than or equal to 30 degrees and the angle φ is a whole circumference (−180 degrees to 180 degrees), and XTD represents a strongest intensity among X-ray (0002) reflection relative intensities of crystal grains in which the angle θ is more than or equal to 80 degrees and less than 100 degrees and the angle φ is within ±10 degrees,
• XTD/XND is more than or equal to 4.0, a Young's modulus in the sheet-width direction is more than or equal to 135 GPa, and tensile strength in the sheet-width direction is more than or equal to 1100 MPa,
• where the sheet-width direction represents a direction perpendicular to the hot-rolling direction in a plane of the sheet,
• [O]eq=[O]+2.77[N] Expression (1)
• where [O] represents an oxygen concentration (mass %) and [N] represents a nitrogen concentration (mass %).