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Determination of Thermal Conductivity of Compact Graphite Iron

Authors: S.F. Alsaffar --- K.I. Khalaf --- A.N. Abo Raghif
Journal: Iraqi Journal of Applied Physics المجلة العراقية للفيزياء التطبيقية ISSN: 18132065 23091673 Year: 2008 Volume: 4 Issue: 4 Pages: 3-6
Publisher: iraqi society for alternative and renewable energy sources and techniques الجمعية العراقية لمصادر وتقنيات الطاقة البديلة والمستجدة

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Abstract

It is presented an experimental study about thermal conductivity in gray iron and compacted graphite iron. Thermal conductivity of the specimen is measured by a comparative method with stationary axial heat flow according to ASTM E 1225. The investigated specimen is put in a stack in tight thermal contact with two reference materials of same diameter. The upper reference specimen is coupled to a heat source, the lower reference to a heat sink. A guard heater and other experimental setup minimize radial heat losses. Reference material is electrolytic iron with certified thermal conductivity. It was tested 2 gray irons, the first alloyed with CuSnCr and the second with CuSnCrMo. Two grades of compacted graphite iron were also tested, CGI 350 and CGI 450. The tests were conducted up to 400°C.

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