By means of cristallographie (inverse) pole figures for extruded uranium rods and tubes, the effect of extrusion variables on the texture can be examined. The principal variables are: prior texture, billet and liner temperatures, reduction in area, and ram speed. The final texture can be deeply affected by the prior texture, since two extrusions made under the same conditions but with different prior textures can be markedly different.

In general, an increase in extrusion temperature has an effect similar to an increase in reduction ratio. Ram speed has no important effect between 13 and 100 in./min except that a slow ram speed allows more time for recrystallization to occur.

The effect of temperature on texture is the development of a strong 110 axial texture for relatively high temperature (above about 525°C), a strong 010 axial texture for relatively low temperatures (below 400°C), and a mixture of 110 and 010 axial textures at intermediate temperatures, although these textures may be somewhat complicated by 130 axial recrystallization textures.

The variation of axial texture along the extrusion length and parallel to the radius of extruded tubes may be large.

A 900°C gamma-phase extrusion is shown to have a mild 100, 010, 021, 001 texture.