3D wire structures are predestined for the use in lightweight structures due to their high mechanical properties and temperature-resistance at a low specific weight. After the development of the textile wire structures and suitable joining technologies for sandwich applications have been presented in part I and part II of the paper, this article focuses on the experimental investigation of material properties and the failure behaviour of textile based metal sandwiches and the metal-matrix-composites with wire reinforcement. For this purpose, extensive static and dynamic tests have been performed. The mechanical properties are compared to commercial lightweight materials of the same class as a benchmark.