Density and Coefficient of Thermal Expansion of 12X18H10T Steel in the Temperature Range from 100-850 ˚C for WWER Reactors

Abstract

The article presents the results of studying the density of steel 12Kh18N10T and the coefficient of thermal expansion TEC (α) in the temperature range from 100 to 850˚С. The measurements were carried out using a DIL-405 C dilatometer. Steel 12Kh18N10T will replace traditional TVEL cladding materials, which are made of zirconium material. The cladding made of steel 12X18H10T can be used as a Tolerant fuel. It is shown that the thermophysical properties and accurate dilatometric results of studies of steel 12Kh18N10T make it possible to use steel cladding in fuel assemblies of a VVER reactor. The article presents the results of comparison with similar data from the State Service of Standard Reference Data system.

Keywords

• толерантное топливо
• плотность
• коэффициент термического расширения
• дилатометр