Sandvik has launched a new hyper-duplex stainless steel, designed and developed to increase operating performance and extend service life in severely corrosive heat exchanger applications. Designated Sandvik SAF 2707 HD®, the new steel is aimed particularly at the chemical, petrochemical and refinery industries. It has been developed to meet industry demands for higher operating temperatures and longer run times (uptime) in critical heat exchanger applications, whilst maintaining the reliability, safety and performance of the equipment. In order to verify Sandvik SAF 2707 HD and gain industrial reference information, heat exchanger tubes have been extensively evaluated, over periods of up to three years, in a variety of refinery applications. In particular and in a joint project with a major refiner in the US, there is evidence of increased operating reliability and uptime benefits of using the new grade. Applications in Europe and the Middle East, under a variety of operating and corrosion conditions, have generated similar positive feedback.
