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:
Dec. 11, 2018
Filed:
Dec. 19, 2013
Jfe Steel Corporation, Tokyo, JP;
Kenichiro Eguchi, Tokyo, JP;
Yasuhide Ishiguro, Tokyo, JP;
JFE Steel Corporation, , JP;
Abstract
A high-strength stainless steel seamless tube or pipe has excellent corrosion resistance, where excellent carbon dioxide gas corrosion resistance in high-temperature environments containing COand Clat high temperatures up to 200° C. and excellent sulfide stress cracking resistance and excellent sulfide stress corrosion cracking resistance at corrosive environments further containing HS are ensured based on a composition of C: 0.05% or less, Si: 0.5% or less, Mn: 0.15% to 1.0%, P: 0.030% or less, S: 0.005% or less, Cr: 15.5% to 17.5%, Ni: 3.0% to 6.0%, Mo: 1.5% to 5.0%, Cu: 4.0% or less, W: 0.1% to 2.5%, and N: 0.15% or less such that −5.9×(7.82+27C-0.91Si+0.21Mn−0.9Cr+Ni-1.1Mo+0.2Cu+11N)≥13.0 is satisfied.