Man vs. rust? With TRIUMPH, there’s no contest. Only TRIUMPH can convert rusted metal surfaces to phosphate without heavy scraping. TRIUMPH’s unique water-based formula bonds with rust and cures hard as cement. One gallon covers 530 to 1000 sq. feet and contains no oily solvents, so a wide range of top coatings can finish the job. When protecting anything from outdoor pipes to structures like the Golden Gate Bridge, use United 303 and TRIUMPH over rust.