Uranium FAQ > E > Enriched Uranium
Search the FAQ for entries containing:
Uranium in which the proportion of U-235 (to U-238) has been increased above the natural 0.7%. Reactor-grade uranium is usually enriched to about 3.5% U-235; weapons-grade uranium is more than 90% U-235.
Last updated on March 11, 2010 by Rich Boberg