Cr Ni Alloy Pipe

Abstract: Provided is a Cr-Ni alloy tube in which the tensile yield stress YSLT and the compressive yield stress YSLC in the tube axial direction of the Cr-Ni alloy tube and the tensile yield stress YSHT of a test piece after high-frequency induction heating and quenching satisfy [0.80 = YSLC/YSLT < 0.95], [YS HT - 0.24 × YSLT = 50.0], and [YSLT = 443 × YSLT/YSLC + 2.28 × YSHT - 350], the test piece being collected from a thickness center position of the Cr-Ni alloy tube so that the longitudinal direction of the test piece is parallel to the tube axial direction.

Patent Information

Application #

Filing Date

04 September 2025

Publication Number

39/2025

Publication Type

INA

Invention Field

METALLURGY

Status

Email

Parent Application

Applicants

NIPPON STEEL CORPORATION

6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071

Inventors

1. OSUKI, Takahiro

c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071

2. NAKANE, Kazuya

c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071

3. MATSUDA, Kohei

c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071

4. TODA, Yoshihiro

c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071

Specification

Documents

Application Documents

#	Name	Date
1	202517084068-STATEMENT OF UNDERTAKING (FORM 3) [04-09-2025(online)].pdf	2025-09-04
2	202517084068-REQUEST FOR EXAMINATION (FORM-18) [04-09-2025(online)].pdf	2025-09-04
3	202517084068-PROOF OF RIGHT [04-09-2025(online)].pdf	2025-09-04
4	202517084068-POWER OF AUTHORITY [04-09-2025(online)].pdf	2025-09-04
5	202517084068-FORM 18 [04-09-2025(online)].pdf	2025-09-04
6	202517084068-FORM 1 [04-09-2025(online)].pdf	2025-09-04
7	202517084068-FIGURE OF ABSTRACT [04-09-2025(online)].pdf	2025-09-04
8	202517084068-DECLARATION OF INVENTORSHIP (FORM 5) [04-09-2025(online)].pdf	2025-09-04
9	202517084068-COMPLETE SPECIFICATION [04-09-2025(online)].pdf	2025-09-04