Volumetric properties of iron in the solid and liquid states

Abstract Density and thermal expansion of pure iron are investigated using a gamma-ray at-tenuation technique in the temperature range of 1020–2090 K of solid and liquid states. The relative density changes of iron during allotropic trasformations and solid – melt phase transition are directly measured. The density of iron at room temperature is measured by the Archimedean method. The temperature dependence of the density of iron in the temperature range of 130–2090 K was constructed using the results of this work and a previous study of the thermal expansion of the a-phase. The data of this work are compared with the results of other authors.