Nuclear graphite
![Core graphite from the Molten-Salt Reactor Experiment](/Images/godic/202501/30/MSRE_Core5811.JPG")
Nuclear graphite is any grade of graphite, usually electro-graphite, specifically manufactured for use as a moderator or reflector within a nuclear reactor. Graphite is an important material for the construction of both historical and modern nuclear reactors, due to its extreme purity and its ability to withstand extremely high temperatures.