118 research outputs found

    A survey of compatibility of materials with high pressure oxygen service

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    The available information on the compatibility of materials with oxygen as applied to the production, transport, and applications experience of high pressure liquid and gaseous oxygen is compiled. High pressure is defined as about 2000 to 3000 psia. Since high pressure projections sometimes can be made from lower pressure data, some low pressure data are also included. Low pressure data are included if they are considered helpful to a better understanding of the behavior at high pressures

    Thermal conductivity, electrical resistivity, and thermopower of aerospace alloys from 4 to 300 K. 6: Fe-22Cr-13Ni-5Mn stainless steel

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    The equipment and techniques for determining the thermal conductivity, electrical resistivity Lorenz ratio, and thermopower characteristics of Fe-22Cr-13Ni-5Mn stainless steel are discussed. The dimensions of the specimen and its preparation are described. The experimental data are represented by arbitrary functions over the entire range and smooth tables are generated from these functions

    Thermal conductivity of austenitic stainless steel, SRM 735, from 5 to 280 K

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    Thermal conductivity and electrical resistivity measurements were conducted on two lots of an austenitic stainless steel. Electrical resistivity measurements were performed on the second lot, both before and after the material was hot-swaged and reannealed to a size 1/10 the original diameter. These measurements indicate that this steel can be swaged and reannealed without an appreciable change in thermal conductivity. Electrical resistivity measurements as well as direct thermal conductivity measurements on several specimens from both lots indicate a material variability in these lots of less than 1% in thermal conductivity

    A Compilation of the Property Differences of Ortho and Para Hydrogen or Mixtures of Ortho and Para Hydrogen

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    Chemical and physical properties of ortho and para hydrogen or mixtures of ortho and para hydroge

    Thermal conductivity, electrical resistivity, and thermopower of aerospace alloys from 4 to 300 K. 3: Annealed Inconel 718

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    Determination of thermal conductivity, electrical resistivity, Lorentz ratio, and thermopower for annealed specimen of Inconel 718 at temperatures from 4 to 300

    Standard reference materials: Thermal conductivity of electrolytic iron, SRM 734, from 4 to 300 K

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    Thermal conductivity data were obtained by the axial one-dimensional heat flow method for a cylindrical rod 3.6 mm in diameter and 23 cm long with an electric heater at one end and a temperature controlled sink at the other. Variability of this iron was studied by means of electrical residual resistivity ratio measurements on 63 specimens. This study showed that with a two-hour anneal at 1000 C one can obtain a thermal conductivity Standard Reference Material that has variability of less than 1% in thermal conductivity

    Fortran Package for Least Squares Curve Fitting and the Solution of Simultaneous Equations

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    Fortran subroutines for least squares curve fitting and solution of simultaneous equation

    High precision cryogenic thermal conductivity standards

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    New apparatus allows accurate simultaneous measurement of thermal conductivity, electrical resistivity, and thermopower for technically important materials, such as new or uncommon alloys. A list of materials investigated is presented. Sources for obtaining data on these materials, as well as the source giving a description of the apparatus, are cited

    Thermal conductivity, electrical resistivity, and thermopower of aerospace alloys from 4 to 300 K

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    Measurement apparatus for broad thermal conductivity testing of aerospace alloys used in low temperature system
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