TITANIUM MATERIAL

WIPO Patent Application WO/2023/170979

A1

This titanium material is configured such that: in a range from the surface to a position at which the oxygen concentration measured in the thickness direction from the surface by a glow discharge spectroscopic analysis method is 1/3 the maximum value, the average nitrogen concentration and the average carbon concentration are both 14.0 at% or less, and the average hydrogen concentration is 30.0 at% or less; and the difference between the c-axis lattice constant of α-phase Ti as determined by X-ray diffraction measurement by a parallel beam method in which the angle of incidence on the surface is 0.3 degrees and the c-axis lattice constant of α-phase Ti as determined by X-ray diffraction measurement by an intensive method at the plate thickness center is 0.015 Å or less.

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MATSUMOTO Minami (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, JP)
TAKAHASHI Kazuhiro (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, JP)
MIYOSHI Ryotaro (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, JP)
KANEKO Michio (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, JP)
YAMAMOTO Masahiro (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, JP)

PCT/JP2022/011131

September 14, 2023

March 11, 2022

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NIPPON STEEL CORPORATION (Chiyoda-ku Tokyo, 71, JP)

B21B3/00; C22C14/00; C22F1/00; C22F1/18; B21B1/22

MATSUNUMA Yasushi et al. (Marunouchi Chiyoda-k, Tokyo 20, JP)

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