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ASTM E423 PDF
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Standard Test Method for Normal Spectral Emittance at Elevated Temperatures of Nonconducting Specimens
| Published by | Publication Date | Number of Pages |
| ASTM | 10/01/2019 | 9 |
ASTM E423 – Standard Test Method for Normal Spectral Emittance at Elevated Temperatures of NonconductingSpecimens
1.1 This test method describes an accurate technique for measuring the normal spectral emittance of electrically nonconducting materials in the temperature range from 1000 to 1800 K, and at wavelengths from 1 to 35 μm. It is particularly suitable for measuring the normal spectral emittance of materials such as ceramic oxides, which have relatively low thermal conductivity and are translucent to appreciable depths (several millimetres) below the surface, but which become essentially opaque at thicknesses of 10 mm or less.
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