A large rectangular component is undergoing fully-reversed cyclic loading, and the component is known to grow the dominant fatigue crack from the outer surface. If the stress amplitude (σ_A) is 100 MPa and the critical stress intensity factor K_IC of the material is 50 MPa⋅m^1/2, then the crack length at which the component will fail catastrophically is _______ mm. (Round off to one decimal place)
Given: The geometric factor α for this loading condition is 1.12.