How many allotropic forms does uranium have? Discuss the effect of allotropic transformation on the properties of uranium. Solution Metallurgically, uranium metal may exist in three allotropic forms: orthorhombic(alpha), tetragonal (beta), or body-centered cubic (gamma), and may be alloyed with other metals to alter its structural and physical properties to suit the application. Uranium undergoes allotropic transformations around 665 and 770°C.When room temperature alpha uranium is heated melted it undergoes three distinct transformations, but the transformations which occur while cooling are important.when the liquid metal solidifies.Slow cooling results in soft metal, while rapid cooling inreases its hardness. At room temperature uranium exists in alpha phase which is semi plastic and corrosive. When heated to beta phase it becomes brittle and hard. The gamma phase is most suited for working as it can be forged, drawn and extruded..