Patent ID: 9436065
Filing Date: 2016-09-06
CPC Classification: C22C,C22F,G03B

Claim Text:
1. A titanium copper foil containing Ti in an amount of 2.0 mass% to 4.0 mass%, optionally containing one or more elements selected from the group consisting of Ag, B, Co, Fe, Mg, Mn, Mo, Ni, P, Si, Cr, and Zr in a total amount of 0 mass% to 1.0 mass%, a remainder being copper and unavoidable impurities, said foil having a 0.2% yield strength of 1000 MPa or more in both directions parallel and perpendicular to a rolling direction, and a spring limit value of 800 MPa or more in both directions parallel and perpendicular to the rolling direction, wherein no cracking occurs at bending radius/foil thickness =2 when a W bending test in conformity with JIS H3130: 2012 is performed at a width of 0.5 mm in a direction perpendicular to the rolling direction.