The development of inhibitors for aerospace applications such as automated rinsing of aircraft requires systems of high solubility, low toxicity, and reasonable cost which are effective on a wide variety of high-strength susceptible alloys. Chromate- based products, in combination with polyphophates, have been reasonably effective against corrosion of ferrous and nonferrous metals and alloys and are presently the most widely used inhibitors. The use of chromates, however, has been the subject of ecological concern, emphasis on a borax-nitrate-based formulation. Multi-functional nonchromate inhibitors have been developed which are effective in preventing localized corrosion and accelerated crack growth, as well as general corrosion. Field evaluations of these inhibitors are underway.