Potentialities of new combined deformation schemes, including the solid state extrusion through conical die (ED) and equal-channel multiple angle extrusion (ECMAE) implemented in different sequence to modify structure and properties of semicrystalline polymers, have been studied for polyamide-6 as an example. It is shown that deformation by the ED-ECMAE scheme gives the best complex of physical and mechanical properties. A significant improvement in elastic and strength properties of polyamide-6 with the conserved high level of plastic characteristics has been observed. There was only a slight anisotropy and dispersion of microhardness across the extrudates. A more uniform oriented structure with lamellae orientation along extrudate's axis has been formed in semicrystalline polymer because the ED-ECMAE scheme implementation. POLYM. ENG. SCI., 51: 1092-1098, 2011. (C) 2011 Society of Plastics Engineers