| 摘要 |
PROBLEM TO BE SOLVED: To provide a β type titanium alloy plate that prevents seizure and metal mold galling and also has moldability in press work and others.SOLUTION: A β type titanium alloy plate contains, in mass%, V: 14-25%, Al: 2.5-5%, Sn: 0.5-4%, Cr: 4% or less with the balance being Ti and impurities, and has a hard layer on its surface, where a hardness at a position 10 μm in depth from the surface is at least 1.2 times a hardness at the plate thickness center, and a thickness of the hard layer is 2.0-10%/one side of the plate thickness.SELECTED DRAWING: None |
