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ASTM C518 measurements rely on the calibration of the heat flow meter apparatus and the quality of the heat flux transducers used, but the procedure itself is deceptively simple: a specimen is placed between two heat flux transducers with uniform thermal contact between a hot plate and a cold plate, as shown in Figure 3. A steady-state heat flux is established through the test specimen. The plate temperatures and plate separation are measured.
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Testing to：
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