V155 is a martensitic Stainless Steel which could be strengthened by precipitation treatment leading a Cu-containing phase to precipitate in the alloy. It is typically used for parts requiring corrosion resistance and high mechanical properties up to 315°C. The proper chemical composition and the manufacturing process promote improved toughness in the transversal section and good ductililty; these features are obtained by balanced chemistry capable to limit the content of ferrite and by consumable electrode remelting practice capable to control the inclusion content accurately.ApplicationsAircraft components (structural parts, flap tracks and engine pylons), fabricated parts in high pressure corrosive environments including valves, shafts, fasteners, fittings and gears.Corrosion and Oxidation ResistanceV155 exhibits good resistance to oxidation up to 600°C. Long term exposure to elevated temperatures can result in reduced toughness in precipitation hardenable stainless steels. Decreased toughness caused by prolonged exposure to high temperatures can be reduced by high temperature aging.