The heat-resistance of coating from deposited steel 15N8G6M3FTB at temperature of 900 °С is studied. It is
established that this dependence occurs in the first hours. The average mass gain of the metal scale of such coating at 900 °С is 0.0128 kg/(m2
•h). It is shown that the basis of metal scale of the composition 15N8G6M3FTB
is hematite Fe2O3 and magnetite Fe3O4, as well as MnO, which have protective properties. The number of other
phase compounds with high protective properties is negligible. The coating from steel 15N8G6M3FTB can be used
for applying to the surface of parts operating at elevated temperatures.