The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 30, 2016
Filed:
Mar. 19, 2012
Naoki Sawawatari, Tokyo, JP;
Kouichi Kuroda, Tokyo, JP;
Hitoshi Suwabe, Tokyo, JP;
Masaki Ueyama, Tokyo, JP;
Naoki Sawawatari, Tokyo, JP;
Kouichi Kuroda, Tokyo, JP;
Hitoshi Suwabe, Tokyo, JP;
Masaki Ueyama, Tokyo, JP;
NIPPON STEEL & SUMITOMO METAL CORPORATION, Tokyo, JP;
Abstract
There is provided an austenitic alloy pipe that is durable even if a stress distribution different according to usage environment is applied. The austenitic alloy pipe in accordance with the present invention has a tensile yield strength YSof at least 689.1 MPa. The tensile yield strength YS, a compressive yield strength YSin a pipe axial direction, a tensile yield strength YSin a pipe circumferential direction of the alloy pipe, and a compressive yield strength YSin the pipe circumferential direction satisfy Formulas (1) to (4).0.90≦≦1.11  (1)0.90≦≦1.11  (2)0.90≦≦1.11  (3)0.90≦≦1.11  (4)