A semifinished product for an implant and implants produced from the semifinished product, the semifinished product comprising or consisting of a region of a magnesium alloy, which is characterized by a grain size gradient of the magnesium alloy between two opposed surfaces from ≦3 μm to ≧8 μm, in each case in relation to the average grain size. Use of the semifinished product for producing corresponding implants, and also a method for producing semifinished products.
