Designer's Guide Results
The following is a list of materials, selected and ranked per your specification.

MaterialSpecific Heat
Zerodur0.80 cal/g °C
CVD Silicon Carbide0.70 cal/g °C
Silicon Carbide Reaction Bonded0.67 cal/g °C
Titanium DiBoride0.23 cal/g °C
Alumina 94%0.21 cal/g °C
Sialon0.21 cal/g °C
Alumina 99.5%0.20 cal/g °C
Alumina 99.9%0.20 cal/g °C
Macor0.19 cal/g °C
Corning Pyrex0.185 cal/g °C
Reference Materials
Stainless Steel0.38 cal/g °C
Tool Steel0.32 cal/g °C
Diamond0.11 cal/g °C

All properties values are at room temperature unless otherwise noted. Engineering data are representative, and are not intended as absolute nor warrantable. Data shown is blended from multiple sources and therefore illustrates the marketplace. The relative rankings are approximate and are based on representative values if the particular material has a range of values for a given property.

Wikipedia Definition(s) :  Specific Heat;

Check Different Properties

Please Note:  This Designers guide is compiled of materials currently machined by Insaco and a few others included for reference.