Abstract
The resistance to heat-check of cast metal materials generally used at high temperatures was examined. Sixteen kinds of cast alloy metal were tested and compared under two thermal patterns with an apparatus designed by the authors. From the test results, it was recognized that the appearance of heat-check differed remarkably among various materials, and moreover that heat-check formed under these testing conditions could be classified into three types according to their appearance. Since the resistance to heat-check differed among various materials, it was difficult to make a simple analyses of the results. However, the resistance to heat-check of these sixteen kinds of cast alloy could be evaluated and fundametal data necessary for future improvements in heat-check resistance were obtained. It must be emphasized that each material should be tested under conditions simulating actual service.
