LX-17/Definition

92.5% TATB, 7.5% Kel-F; One of two insensitive high explosives in use in U.S. nuclear weapons. Used in B83 strategic bomb; W-84; W87 Minuteman warhead; and W-89. Stockpile-monitoring of the W87 warhead shows some evidence of stiffening with age, perhaps due to an increase in the crystallinity of the binder.