公开(公告)号：US20190232404A1

公开(公告)日：2019-08-01

申请号：US16256636

申请日：2019-01-24

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Tomohiro KANAZAWA ,  Naoki KOHYAMA ,  Yoshihiro IGUCHI ,  Yuuki SASAGAWA ,  Tetsuji SHIBATA ,  Toshiyuki TANI

IPC: B23D61/18 ,  B28D5/04 ,  B23D57/00 ,  B24B27/06 ,  C25D15/02 ,  C22C38/12

CPC classification number: B23D61/185 ,  B23D57/0007 ,  B24B27/0633 ,  B28D5/045 ,  C22C38/12 ,  C25D15/02

Abstract: A metal wire containing tungsten is provided. A tungsten content of the metal wire is at least 90 wt %. A tensile strength of the metal wire is at least 4000 MPa. An elastic modulus of the metal wire is at least 350 GPa and at most 450 GPa. A diameter of the metal wire is at most 60 μm. An average crystal grain size of the metal wire in a cross-section orthogonal to an axis of the metal wire is at most 0.20 μm.