Patent ID: 9593392
Date: 2017-03-14
CPC Classifications: C21D,C22C

Claim:
1. A Method for producing a workpiece having properties which are adjustable across a wall thickness or strip thickness of the workpiece, said workpiece being made of an austenitic lightweight steel which has an alloy composition comprising by weight percent 0.2% to 1% carbon, 0.05% to <15% aluminum, 0.05% to 6.0% silicon, 9% to <30% manganese, and at least one element selected from the group consisting of chromium, copper, boron, titanium, zirconium, vanadium and niobium, chromium≦6.5%; titanium+zirconium≦0.7%; niobium+vanadium≦0.5%, boron≦1%, the remainder iron including common steel companion elements, said method comprising the steps of: