A Study of the Structure and Physicomechanical Properties of Promising High-Strength Economically Alloyed Steel for Oil and Gas Production Pipes Operating under Extreme Conditions

The results of studying the structure and mechanical and magnetic properties of a promising high-strength economically alloyed steel for oil and gas production pipes, which are subject to the requirements of increased strength and resistance to sulfide cracking under stress, are reported. The effect of the level of applied normal stresses on the magnetic characteristics of the examined steel is also studied. The parameters that can be used in the future for developing methods for nondestructive diagnostics of the current state during operation of the parts and structural elements made of this kind of materials are established.