A cylindrical single crystal of copper having 10 mm diameter is deformed under a uniaxial tensile load of 2200 N. The angle between the normal to the slip plane and the tensile loading axis is α, whereas, the angle between slip direction and the tensile axis is β. The slip direction is in the plane defined by the stress axis and the normal to the slip plane.
If α = β, the critical resolved shear stress (CRSS), rounded off to one decimal place, is ________ MPa.