Surface Tension and Thermal Conductivity of NIST SRM 1155a (AISI 316L Stainless Steel)

Peter Pichler*, Thomas Leitner, Erhard Kaschnitz, Johannes Rattenberger, Gernot Pottlacher

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


NIST SRM 1155a is an AISI 316L stainless steel (Cr18–Ni12–Mo2) and Standard Reference Material (SRM) intended for use with test methods for elemental analysis. In a previous paper “Measurement of thermophysical properties of solid and liquid NIST SRM 316L stainless steel”, we already published reliable thermophysical properties of high temperature solid and of the liquid phase of this material such as temperature dependent enthalpy, density and electrical resistivity, as well as specific heat capacity for the solid and the liquid phase. In this paper, we add additional thermophysical properties obtained by ohmic pulse-heating and by the laser flash method, namely thermal conductivity and thermal diffusivity as a function of temperature. Furthermore we report surface tension measurement results of liquid SRM 1155a obtained by means of electromagnetic levitation. Simulation of processes like additive manufacturing, laser welding, laser cutting or metal casting depend on the above named quantities as input data. Ohmic pulse-heating as well as electromagnetic levitation are so called “containerless” investigation techniques and no significant chemical reactions of the hot liquid alloy with its surrounding occur. The data presented here are compared to the available literature data and are accompanied by an uncertainty analysis according to the “Guide to the Expression of Uncertainty in Measurement”.
Original languageEnglish
Article number66
Pages (from-to)1-17
JournalInternational Journal of Thermophysics
Issue number5
Publication statusPublished - May 2022


  • Liquid phase
  • NIST SRM 1155a
  • Stainless steel AISI 316L
  • Surface tension
  • Thermal conductivity

ASJC Scopus subject areas

  • Condensed Matter Physics

Fields of Expertise

  • Advanced Materials Science


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