Possibility of use of integrated characteristics on a bend [1] for calculation of forming process and relaxations of details with a constant thickness from sheet and plates having surfaces close to developable from anisotropic alloys with different resistance to a stretching and compression at a flat stress state in the creep conditions is proved. The technique of definition of functional dependences parameters from processing of experimental diagrams on a pure bend of rectangular beams and torsion of square plates for calculation process of plates bending with use of the relationship between rates of change curvature and the moments for orthotropic materials in the assumption of identical properties on a stretching and compression is spent [2].