 2009 年，美国报告的钚库存量为 95.4 公吨。美国在 1994 年和 2007 年宣布的 61.5 公吨的钚为过剩，并不再将之作为裂变材料用于核弹头。
• In 2009, the United States reported the plutonium inventory was 95.4 metric tons (MT). In 1994 and 2007, the United States declared 61.5 MT of plutonium as excess and removed from further use as fissile material for use in nuclear warheads.