Applied basic research, are usually oriented to known application and often gives important results to science. Some results from the past period are presented: We approved that the fracture of ferrite changes from ductile to brittle with decreasing of the sharpnes of the tip of crack only to some critical size. After that the plastical decohesion stops with plastic cross shear in one crystal plane, followed by cleavage of (011) crystal planes. We proposed some supplementaries for the calculation of plastic zone near the crack tip and for the radius of tip close to the moment when the fracture mechanism switches from ductile to cleavage. - New developed chromium alloys showed that kinetics of oxidation at temperatures up to 850 degrees C does not occur, because of the passive oxyde layer, that prevents further oxidation. - Research of brittle fracture of steel confirmed that increased sensitivity of steel to brittle fracture is not dependent on appearance of poliedrical precipitates of cementite during annealing for deformation aging. The main reason is segregation of carbon and appearance of planar precipitates, that reduce the cohezion of (100) planes, where cleavage fracture appears. Segregations of carbon are the main reason for reduced cleavage strength of ferrite. Plastic deformation or annealing do not change the ductile/brittle transition temperature. That confirms the rearangement of carbon atoms is connected with space lattice of deformed ferrite. - Thermodynamic research of basic reactions of titanium with oxygen, sulphur and nitrogen, dissolved in molten steel, and kinetics, enable fundamental studies of kinetics of stainless steels alloyed with titanium. - Determined was the influence of spinodal decomposition of delta ferrite at room and elevated temperature on coercitivity and structural brittleness of austenitic stainless steel. - Study of kinetics of processes in solid solution, the influence of chemical composition and heat treatment on microstructure of new low alloyed hypereutectoid cast steel with nodular graphite, enabled determination of fhysical-chemical conditions for attaining the perlitic-bainitic microstructure with lower content of ledeburite. - Study of mechanisms and influence of added rare earths and CaSi on morphology of carbide grains in eutectic, enabled better understanding of correlation between the microstructure of material and its fracture toughness. - Developed software ALLINOSIM 3D enables to follow the heating process of billets in walking beam furnace in real time. The simulation in real time enables the calculation of temperature fields in all billets in the furnace. The model was verified by the performed temperature profiles measurements in the furnace. - Developed was "off-line" software for simulating of reheating of thick plates in pusher furnace, at different heating parameters. The model is still upgraded to be able of simulation in real time. Determined was the matrix of geometrical factors of visibility for common geometry, composed of rectangles. As the most suitable for the case, the statistical method Monte Carlo was applied for evaluation of such a complicated geometry (the pusher furnace together with the plates). The simulation enables to follow the reheating of all plates in the furnace in three dimensions.