Jingszo !

For the investigation of mechanical properties microhardness measurements were made. It could be found that the Nebra Sky Disc was manufactured from a flat cast followed by hot forging process. During the forging process the disc was heated and forged for approximately 10 times.

The Nebra Sky Disc is an extraordinary relict of the Early Bronze Age and an impressive example of the profound knowledge that was available in the Únětice culture. Since it proves a detailed understanding of astronomic correlations, it became UNESCO Memory of the World. Furthermore, its manufacture was by no means trivial. While the production of axes and sheet metal jewellery by forging techniques were common practice in the Central European Early Bronze Age.