The paper includes data on the physico-mechanical properties of sinter of various origins including density (bulk, average, and true), porosity (open and total), critical angle of repose, internal and external angles of repose measured on dropping the material down onto a horizontal surface from a steel sheet inclined by 40°, 60°, and 80° to the horizon, angle of external friction on the steel surface, the strength properties of the sinter in a cold state and after reduction at a temperature of 500 °C. The investigated sinter had the following characteristics: an average density of 3.20–3.30 g/cm3; a true density of 4.43–4.57 g/cm3; an external angle of repose of 20.5–32.3 deg; a bulk porosity of 0.46–0.50 m3/m3; a degree of reduction by hydrogen at 500 °C of 3.3–4.8%. It demonstrated the following strength characteristics in the cold state: IR+5 = 92.0%, D0.5-5 = 5.5%, A-0.5 = 2.5%. The strength characteristics after low-temperature reduction in hydrogen atmosphere were as follows: IR+5 = 29.80 %; D0.5-5 = 57.6 %; A-0.5 = 12.6 %.
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