FIELD: applicable in manufacture of working members in blades. SUBSTANCE: mixture for production of composite polycrystalline material contains binder based on refractory compounds of transition metals of groups IY-YI or their eutectic compounds with metals Zn, Cr, Mo and Fe and ultrafine diamond powder with particles sizing 10-800 
with the following composition, mas. diamond of cubic modification 30-95; the balance, carbon. Composite polycrystalline material has the following qualitative and quantitative composition, mas. ultrafine diamond powder 40-60; binder 60-40. EFFECT: produced composite polycrystalline material features strong fine-grain matter with high mechanical and physical and service properties. 1 tbl
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