The invention relates to a brake piston 1 for a brake caliper 9 of a disc brake, which is made in forming processes of a metallic material, in particular a flat sheet, and as one-sided open pot with a piston longitudinal axis A, with a piston wall 2 and a piston crown 3 in one piece The problem is solved for the first time on principle on the basis of a cup-shaped brake piston blank 19 by at least one localized, ie partially cold-upsetted or partially ironed , cylindrical piston wall portion with partially deformed piston wall 2 is present, which is adaptively changed by plastic material deformation by means of material redistribution (flow) including strain hardening of its piston wall thickness s1-x.
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