|Moly Ferritics - Corrosion Resistance|
U-434 and U-436 have similar general corrosion resistance to U-430. Their pitting resistance is, however superior to U-430 but not as good as U-304. U-434 and U-436 thus have good resistance to rural and industrial atmospheres but in marine atmosphere environments, staining may occur, unless they are regularly washed.
U-444 has good resistance to a wide variety of corrosive environments. With 18% chromium and 2% molybdenum the steel has good uniform and pitting corrosion resistance, similar to U-316L in most environments. U-444 is thus suitable for use in marine atmospheres.