US Patent Issued to Alleima Tube on Aug. 26 for "Corrosion resistant duplex steel alloy, objects made thereof, and method of making the alloy" (Swedish, Dutch Inventors)

ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,398,448, issued on Aug. 26, was assigned to Alleima Tube AB (Sandviken, Sweden).

"Corrosion resistant duplex steel alloy, objects made thereof, and method of making the alloy" was invented by Linn Larsson (Jarbo, Sweden), Daniel Gullberg (Rodergatan, Sweden), Ulf Kivisakk (Sandviken, Sweden), Martin Ostlund (Gavle, Sweden) and Alexander Aleida Antonius Scheerder (Sittard, Netherlands).

According to the abstract* released by the U.S. Patent & Trademark Office: "The elementary composition of a Hot Isostatic Pressed ferritic-austenitic steel alloy includes, in percentages by weight: C 0-0.05; Si 0-0.8; Mn 0-4.0; Cr more than 29-35; Ni 3.0-10; Mo 0-4.0; N 0.30-0.55; Cu 0-0.8; W 0-3.0; S ...