Patents Assigned to NIPPON STEET & SUMITOMO METAL CORPORATION
  • AUSTENITIC STAINLESS STEEL TUBE
    Publication number: 20140150734
    Abstract: There is provided an austenitic stainless steel tube containing, by mass percent, 14 to 28% of Cr and 6 to 30% of Ni, wherein the steel tube has a metal micro-structure, in which an average dislocation density, which is determined by XRD measurement using a Co tube, is 3.0×1014/m2 or higher, on the inner surface side of the steel tube. The crystal grain size of the steel tube is preferably 50 ?m or smaller. The steel tube of the present invention is suitable as a steel tube used in power-generating plants.
    Type: Application
    Filed: May 28, 2012
    Publication date: June 5, 2014
    Applicant: NIPPON STEET & SUMITOMO METAL CORPORATION
    Inventors: Yoshitaka Nishiyama, Mitsuharu Yonemura