Novel alpha titanium alloy and preparation method of panel and bar of alpha titanium alloy

The invention relates to a novel alpha titanium alloy, and belongs to the technical field of an alloy preparation process. The alpha titanium alloy comprises the following components by mass percent: 5.0-7.0wt% of aluminum, 4.0-5.0wt% of chromium, 1.0-2.0wt% of manganese, not more than 0.1wt% of total of oxygen, carbon, nitrogen and hydrogen, and the rest of iron. By using alloying element Cr and Mn with low cost as reinforcing elements of the alpha titanium alloy, the traditional alloy elements with high price such as Sn, Mo, Zr and V are substituted; the result shows that the new alloy has good comprehensive performance. Through the adoption of the titanium alloy disclosed by the invention, the selective range of the alloying elements of the alpha titanium alloy is broadened, and a certain innovation and theoretical property guidance are provided for the further development of the alpha titanium alloy.