Method for manufacturing a complex-formed component

A method for manufacturing a complex-formed component, comprising:

• subjecting austenitic steel to a multi-stage process where cold forming steps and heating steps are alternated for at least two multi-stage process steps,
• wherein the cold forming steps of the multi-stage process are carried out by deep-drawing, plunging, bulging, bending, spinning, stretch forming, or a hydro-mechanical deep-drawing process,
• the austenitic steel maintains an austenitic microstructure with non-magnetic reversible properties during every process step and the component produced has an austenitic microstructure with non-magnetic reversible properties,
• the austenitic steel is a stable full-austenitic steel exhibiting a twinning induced plasticity (TWIP) hardening mechanism with a defined stacking fault energy of 20-30 mJ/m2,
• the austenitic steel has an initial elongation of A80 that is greater than or equal to 30%, and
• the heating temperature of the heating steps is 750-1150° C.