Comparison on Domestic and Foreign Testing Methods for Specific Heat Capacity of Materials

The specific heat capacity is one of the important parameters to determine the thermal physical properties of materials, but there were no domestic testing methods for reference, and usually the traditional comparison method was used. The specific heat capacity of standard sapphire sample was tested by comparison method and method of ASTM E1269-2011 and DIN 51007-1994 separately. The results show that the specific heat capacity value tested by foreign method was closer to the standard value of sapphire compared to the value tested by comparison method. The testing relative deviation of foreign method was lower and in the range of 1.3%-3.7%, and the relative deviation of traditional comparison method was in the range of 1.7%- 4.3%. Therefore, the test accuracy of method of ASTM E1269-2011 and DIN 51007-1994 was higher than that of comparison method and it was more suitable for specific heat capacity testing of materials.