Patent ID: 6617050
Filing Date: 2003-09-09
Classification: A63B,C21D,Y10T

Abstract:
A low density and high ductility alloy for heads of golf clubs, the alloy having a tensile strength of at least 80 ksi, an elongation greater than 65%, and consisting essentially of 25 to 31 weight percent manganese, 6.3 to 7.8 weight percent aluminum, 0.65 to 0.85 weight percent carbon, 5.5 to 9.0 weight percent chromium, 0.8 to 1.5 weight percent silicon, 2.0 to 5 weight percent titanium, 0.5 to 1 weight percent molybdenum, and the balance being iron; and being forged at a temperature from 800Â° C. to 1050Â° C. to form an entire head of a golf club having a surface roughness below 3 &mgr;m.