Method for manufacturing a cold rolled member for battery housing having different mechanical values in at least two consecutive areas and having the ratio (r) between ultimate load ratio ΔF and Δt, whereby the higher strength areas are used as non-deformable zones and conversely the higher ductility areas of the material are used for constructive provided deformation zones which protrude sideward of the battery housing by modifying mechanical and/or physical properties in a TWIP hardening steel starting material selected from the group consisting of a hot deformed strip, a cold deformed strip, sheet, plate and coil made of steel, said starting material having a homogeneous initial thickness in a longitudinal direction, said method comprising the steps of • reducing the thickness in the longitudinal direction of one or more first areas in a cold deformation process to provide one or more areas with a final thickness in the longitudinal direction that is less than the initial thickness in the longitudinal direction and providing one or more second areas having the initial thickness in the longitudinal direction so that the one or more first areas have an increased strength concurrent with a decrease in elongation in a partially deformed steel material, • annealing the partially deformed steel material to provide a partially deformed steel material having more than one thickness in the longitudinal direction and homogeneous material properties, and • reducing the thickness in the longitudinal direction of the one or more second areas to the final thickness of the one or more first areas to provide a deformed steel material having a homogeneous thickness in the longitudinal direction whereby the reducing of the thickness of the second areas provides a deformed steel material having first and second areas with different material properties in the longitudinal direction of the deformed steel material and a forming degree (Φ) 5 ≤ Φ ≤ 60 %, said forming degree (Φ) being identical in each thickness reducing step. • reducing the thickness in the longitudinal direction of one or more first areas in a cold deformation process to provide one or more areas with a final thickness in the longitudinal direction that is less than the initial thickness in the longitudinal direction and providing one or more second areas having the initial thickness in the longitudinal direction so that the one or more first areas have an increased strength concurrent with a decrease in elongation in a partially deformed steel material, • annealing the partially deformed steel material to provide a partially deformed steel material having more than one thickness in the longitudinal direction and homogeneous material properties, and • reducing the thickness in the longitudinal direction of the one or more second areas to the final thickness of the one or more first areas to provide a deformed steel material having a homogeneous thickness in the longitudinal direction whereby the reducing of the thickness of the second areas provides a deformed steel material having first and second areas with different material properties in the longitudinal direction of the deformed steel material and a forming degree (Φ) 5 ≤ Φ ≤ 60 %, said forming degree (Φ) being identical in each thickness reducing step. <EOS>