Patent ID: 8177929

Claim:
A method of making an embossed metal gasket, comprising the steps of: forming an annealed sheet of an iron-nickel-chromium alloy; cold rolling the annealed sheet without shaping to produce a cold-rolled, work hardened microstructure of the sheet; and forming a gasket from said sheet including cold forming a least one embossed sealing bead which imparts further work hardening in the area of the at least one sealing bead wherein the at least one sealing bead is sealably operable with substantially full functional recovery in a fully-clamped, sealed joint at a temperature of greater than 1100° F. and up to 1200° F. without post-embossment heat treating of the sealing bead to provide the finished sealing bead with at least a portion of the work hardened microstructure as cold-rolled and embossed.