The impact of remanufacturing on the conservation of energy and resources has been
well recognized during the last decade. When the relevant technologies are applied for high
temperature components in power and process industries, a redesign of the component life should
be required due to the time-dependent feature of high temperature failure. In order to provide some
fundamentals for redesign and remanufacture of high temperature components, mechanical
behavior of a two-bar structure with one bar being remanufactured is analyzed. An optimal
repairing time is given. From the viewpoint of creep damage, various high temperature structures
are analyzed by using damage coupled finite element method. Suggestions for life extension
remanufacture are proposed for typical high temperature components.