Panasonic Intellectual Property Management Co., Ltd.

Atsushi Shimada

Tomohiro Kanazawa

Naoki Kohyama

Kenshi Tsuji

Yoshihiro Iguchi

Yoshiyuki Kita

Yui Nakai

Yuuki Sasagawa

Akitoshi Kasahara

A tungsten wire contains tungsten or a tungsten alloy. An average width of surface crystal grains in a direction perpendicular to an axis of the tungsten wire is at most 76 nm. The tungsten wire has a tensile of at least 4800 MPa, and a diameter of at most 100 μm.

Tungsten wire and saw wire

A metal wire, which is one of a tungsten wire and a tungsten alloy wire, includes alkali metal on the surface thereof. The amount of alkali metal is at most 2.0 μg per 1 g of the metal wire.

Metal wire

Growing community of inventors

Osaka, Japan

Atsushi Shimada