Synthetic diamond is replacing the natural one in diamond drilling tool production owing to its similar performances and much lower price. However, its less thermal/chemical stability imposes a lower processing temperature, e.g. less than ～1100°C (～1373 K) in the complex tool production by the most advantageous method for this purpose -Sintering by Infiltration of Loose Powders. The paper presents the design and performances of a new super hard and tough composite material, obtained by using a Ni-W-Fusion Tungsten Carbide loose powder mixture and a family of Cu-Ni-Zn infiltrating alloys, imposing a processing temperature less than 1100°C (～1373 K) {instead of higher than 1150°C (～1423 K) for the commonly used Cu-Ni-Sn ones}. It is able to act as a tool matrix by firmly embedding diamond particles and by being itself an abrasive material - of a high wear resistance and abrasion capacity - necessary in the arduous working conditions that appear in the stone drilling process.
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