 美国截至 2004 年的高浓铀库存总量为 686.6 公吨。美国在 1994 年和2005 年的申报中宣布，不再将该库存量的相当大一部分，即 374 公吨的高浓铀作为裂变材料用于核弹头。
• The total U.S. HEU inventory as of 2004 was 686.6 MT. In declarations in 1994 and 2005, the United States declared that a significant portion of that inventory totalling 374 MT of HEU would be removed from further use as fissile material in nuclear warheads.