Abstract: In the current study, the effect of the geometrical profile of direct extrusion on metal flow was investigated. Pure aluminum (30 mm diameter, 60 mm length) was used. The 6 types of dies profile were used. The first die was with 36° while two dies were designed as convex on a theoretical basis (CCRHS and ACRHS), three dies were designed as concave on a theoretical basis (DCRHS, UCRHS and CMSR). The experimental results showed, the higher value of the efficiency of the metal flow was given by the die CCRHS which was 84% while the lower value was 50% for the die UCRHS.