Patent ID: 11890665
Assignee: PROTERIAL, LTD.
Field: Materials, metallurgy (Chemistry)
Classification: CPC B  C  F | IPC B  C  F

Claim 2:
3. A method for producing the metal gasket of claim 1 consisting of, in terms of % by mass, C: 0.10% or less, Si: 1.0% or less, Mn: 2.0% or less, P: 0.04% or less, S: 0.01% or less, Ni: 25.0% to 60.0%, Cr: 10.0% to 20.0%, one or both of Mo and W satisfying Mo+W/2: 0.05% to 5.0%, Al: 1.6% to 3.0%, Ti: 1.5% to 3.0%, Nb: 0.3% to 2.5%, V: 1.0% or less, B: 0.001% to 0.015%, Mg: 0.0005% to 0.01%, wherein S/Mg: 1.0 or less, N: 0.01% or less, O: 0.005% or less, and a remainder consisting of Fe and unavoidable impurities,
wherein the method comprises:
plastic working of a material for cold rolling having the composition into a thin plate shape by performing cold rolling on the material; and performing a process of forming the material into a metal gasket shape having a thickness of 1 mm or less.