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Comparative analysis is provided for two-layer steels prepared by different methods. A method is proposed for thermal cycling tests as an evaluation of the operational reliability of equipment made from two-layer steels.In order to manufacture contemporary highly productive equipment for oil and gas processing, chemical, and other products, reliable materials are necessary providing observation of the specifications of Rostekhnadzor for fire and explosion hazard objects.Operating conditions for such equipment are connected with the action of corrosive media and are aggravated by numerous cyclic loads (changes in temperature and pressure). Two-layer corrosion-resistant sheets prepared by different technologies are used in order to manufacture vessels and equipment operating under pressure: pack rolling, explosive welding, explosive welding followed rolling into sheet (sheet or plate of the main layer with a thickness of more than 12 mm, sheet or two-layer sheets of stainless steel), and also faced billets (electroslag hard-facing of stainless steel on slabs of carbon or lowalloy steels, hereinafter ESH) followed by rolling into sheet.Questions of providing an increase in the quality indices for two-layer sheets, which have a uniform structure and joined layer strength, and also corrosion resistance of the cladding layer, have been reflected in [1][2][3][4].However, until now insufficient attention has been devoted to evaluating the production efficiency of two-layer steels, prepared by different methods, to equipment manufacture, and its operation. The need for such studies is determined by cases of failure of layer cohesion continuity and delamination of a cladding layer (blisters) during operation under conditions of repeated cyclic loads (for example, the coking chamber of devices for slow cooling made of two-layer steel grade 12KhM + 08Kh13), which necessitates repair, reducing equipment continuous operating life.In order to carry out these studies, specimens of two-layer steels selected were prepared by pack rolling, explosive welding, explosive welding with rolling, and ESH with rolling. Two-layer steel compositions selected were divided into three groups: group I is specimens with a cladding layer of corrosion-resistant austenitic steel 08Kh18N10T and a main layer of steel grade 12MKh, 12KhM, and 09G2S; group II is specimens with a cladding layer of corrosion-resistant ferritic steel