Sandvik Materials Technology states that its newly developed duplex stainless steel tube grades are providing the ultra-high strength and corrosion resistance needed for the wellhead control systems for today’s enhanced oil and gas recovery methods. Anticipating industry demands for more remote and deeper subsea umbilicals, Sandvik Materials Technology has evolved new super and hyper duplex stainless steel materials. Designated super duplex Sandvik SAF 2906 and hyper duplex Sandvik 3207 HD, the new grades optimise material strengths and corrosion resistance, extending the properties of Sandvik’s industry standard super duplex grade, Sandvik SAF 2507. Designed for deeper waters, higher temperatures and pressures, the new grades represent the natural evolution of the Sandvik duplex steel grades. They call on years of oil and gas industry experience and Sandvik’s vast and advanced metallurgical research and process development capabilities. The company has one of Europe’s largest, specialist R&D facilities. The new Sandvik SAF 2906 has corrosion properties similar to its super duplex grade Sandvik SAF 2507, slightly higher strength (a tensile strength of 860-1160 Mpa) and it operates at a maximum of 60C. Specially developed with extremely high strength (a tensile strength of 980-1180 Mpa), Sandvik 3207 HD is considered ideal for deepwater projects and temperatures around 90°C.
