As a class, most metastable or near-beta Ti alloys are of commercial significance because of an age-hardening capability which depends on the formation of hcp alpha-phase precipitates [see ref. 1, for a review] during the aging of solution-treated material in the 450'-500'C range. Despite continued interest in commercial applications of beta titanium alloys, most recent developmental efforts have focused on titanium alloys based on either the alpha-two Ti3Al or the gamma TiAl phase. The present communication reports initial results which indicate that it is possible to ageharden the beta Ti alloy, Ti-23Nb-l IAI (atomic %), with alpha-two precipitates.