PHYSICAL AND SPECIAL PROPERTIES OF CASTING CHROMIUM-ALUMINUM STEELS

Abstract

Influencing of chrome, aluminium, titan and RZM is explored in the wide range of their concentrations on physical and special properties of heat-resistant steels for making of the poured details, working in aggressive environments to 1250 °C. It is set that at optimum correlation of basic components became have high heat resistance, satisfactory casting and mechanical properties, allowing to make different mass, geometry and overall sizes. Heat conductivity and conductivity of chromium-aluminum steel is studied. The brands of steels are recommended for concrete external environments.