Thermal expansion of ChS-139 steel in temperature range 20–720 В°С
S.V. Stankus, Yu.M. Kozlovsky, O.S. Yatsuk, and O.I. Verba
Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russia
Keywords: coefficient of thermal expansion, ChS-139 steel, solid state, high temperatures
Pages: 355–358
Abstract
The article presents the results of investigation of thermal expansion of ChS-139 steel in the temperature range 20–720 °С. Measurements were carried out by dilatometric method with DIL-402C unit manufactured by NETZSCH (Germany) with the error (1.5–2) × 10–7 K–1. The approximation dependences of thermal coefficient of linear expansion on temperature have been obtained and reference tables have been calculated. The abnormal change of expansion coefficient above 550 °С is shown, and the explanation of the phenomenon is given.
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