To investigate the generation mechanism of anisotropy of tensile properties, we tested the tensile properties of samples from different sampling angles and analyzed the crystal orientation of formed parts using electronic back-scattering diffraction. The results demonstrate that the elongation of the 90° sample (angle between the long axis direction of the tensile sample and the horizontal direction is 90°) is 32% higher than that of the 45° sample, and the tensile strength and yield strength are 9% and 8% lower, respectively. The Schmid factor corresponding to the 90° sample's main texture has the highest value of 0.485, and the angle θ between external tensile stress σ and shear stress along the sliding direction τ is 38°. The first moving slip system is a prismatic slip system. The Schmid factor of the 45° sample is the lowest (0.415), and θ is 28°. The first slip system of the sample is a pyramidal slip system. The 90° sample has the smallest proportion of small angular grain boundaries (1%), whereas the 45° sample has the highest proportion (29.2%). Additionally, the 90° sample has optimal plasticity, whereas the 45° sample has the highest strength.