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Vol. 28 No. 3
May-June 2006

Making an imPACt | Recent IUPAC technical reports and recommendations that affect the many fields of pure and applied chemistry.
See also www.iupac.org/publications/pac

Reference Data for the Density and Viscosity of Liquid Aluminum and Liquid Iron

Marc J. Assael, et al.
Journal of Physical and Chemical Reference Data
Vol. 35, No. 1, pp. 285–300 (2006)
doi:10.1063/1.2149380

The available experimental data for the density and viscosity of liquid aluminum and iron have been critically examined with the intention of establishing a density and a viscosity standard. All experimental data have been categorized into primary and secondary data according to the quality of measurement specified by a series of criteria. The proposed standard reference correlations for the density of the aluminum and iron are characterized by standard deviations of 0.65% and 0.77% at the 95% confidence level, respectively. The overall uncertainty in the absolute values of the density is estimated to be one of ±0.7% for aluminum and 0.8% for iron, which is worse than that of the most optimistic claims but recognizes the unexplained discrepancies between different methods. The standard reference correlations for the viscosity of aluminum and iron are characterized by standard deviations of 13.7% and 5.7% at the 95% confidence level, respectively. The uncertainty in the absolute values of the viscosity of the two metals is thought to be no larger than the scatter between measurements made with different techniques and so can be said to be ±14% in the case of aluminum and ±6% in the case of iron.

The work described in this paper was carried out under the auspices of the International Association for Transport Properties (formerly known as the IUPAC Subcommittee of Transport Properties). Support was provided by IUPAC under project 2003-005-1-100.

www.iupac.org/projects/2003/2003-005-1-100.html


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