GOLF CLUB HEAD Russian patent published in 2001 - IPC

FIELD: sports engineering. SUBSTANCE: device has cast body of the first type material possessing the first set of strength properties, welded to face plate which surface is designed for striking the ball. The plate is manufactured from the deformable second type material and has strength properties of the second set that is higher the first one. The first type material is titanium alloy possessing ultimate strength of 680-1080 Mpa. The deformable second type material is produced on the titanium parent metal and possesses ultimate strength of 1300 Mpa and hardness of 40 HRc. It is selected from a group composed of material having in % by mass: aluminum 4.0-5.5, vanadium 4.0-5.0, molybdenum 1.5-2.5, chrome 0.8- 1.4, iron 0.4-1.3, titanium and admixtures making the rest; and material having in % by mass: aluminum 4.4-5.7, vanadium 4.0-5.0, molybdenum 4.0-5.5, chrome 0.5-1.5, titanium and admixtures making the rest; and material having in % by mass: aluminum 3.5-6.3, vanadium 0.9-1.9, molybdenum 2.5-3.8, titanium and admixtures making the rest. EFFECT: high impact strength; long service life. 3 cl, 2 dwg