Sandvik Materials Technology, Sweden, has built a prototype stainless steel yacht manufactured entirely of Sandvik SAF 2507 duplex stainless steel. Construction is based on a thin hull with internal ship-length reinforcements. It is lighter than traditional aluminum boats, and consumes half as much fuel. SAF 2507 provides excellent corrosion properties and very high mechanical strength. It is particularly well-suited for service in aggressive environments such as warm chlorinated seawater and acidic, chloride-containing media.
Suitable for service in highly corrosive conditions and where high strength is required, the properties of Sandvik SAF 2507 are being widely used in offshore oil and gas exploration and production, and in heat exchangers in petrochemical and chemical processing. The grade is also a good choice for hydraulic and instrumentation applications in tropical marine environments.
The external surface is manufactured and delivered under license from Outokumpu, while Sandvik delivers the boat’s details, such as strip steel for hull reinforcements, welding wire, tubes, and propeller-shaft rods.
