Patent ID: 6814817
Filing Date: 2004-11-09
Classification: C21D

Abstract:
A heat treated steel strap usable in a strapping machine, the steel strap having a tensile strength of at least about 170 KSI, and an elongation of at least about 6.5 percent, the steel strap fabricated from a coiled steel reduced by cold rolling, the steel strap composition comprising: 0.30 to 0.36 percent carbon, 0.90 to 1.25 percent manganese, and 0.75 to 1.10 percent silicon, the strap being heated to a temperature of about 815Â° C. to about 900Â° C. and quenched to a temperature of about 370Â° C. to about 510Â° C., the strap having a seal joint break strength of about 4350 pounds when the strap has a width of about one inch and a thickness of 0.030 inches.