Since high heat flux removal in fusion reactors such as plasma facing
components, in particular divertor plates, is subjected to high heat l
oads from their one side, comprehensive and promising databases are re
quired. This database summarizes thermal and mechanical properties of
various materials including newly developed carbon based materials. Th
ermal-hydraulics including heat transfer data and many critical heat f
lux data under one sided heating conditions are also summarized for wa
ter and helium gas.