在有色金属合金的精加工中，使用聚晶金刚石工具已被工业界普遍接受。粗加工应用尚未被广泛接受，因为PCD因其高硬度而被认为太脆。将讨论粗加工应用。重点介绍了金刚石颗粒尺寸对抗冲击性能的影响。PCD工具之前仅建议用于有色金属材料。由于刀具和被加工材料之间的化学反应性，不建议使用PCD加工含铁材料。 试验结果表明，只要选择合适的加工参数，金刚石刀具可以有效地用于灰铸铁的加工。

THE USE OF POLYCRYSTALLINE DIAMOND TOOLING HAS GENERALLY BEEN ACCEPTED IN INDUSTRY FOR THE FINISH MACHINING OF NONFERROUS ALLOYS. ROUGH MACHINING APPLICATIONS HAVE NOT BEEN WIDELY ACCEPTED BECAUSE PCD IS BELIEVED TO BE TOO BRITTLE DUE TO ITS HIGH HARDNESS. ROUGH MACHINING APPLICATIONS WILL BE DISCUSSED. THE AFFECT OF DIAMOND GRAIN SIZE ON IMPACT RESISTANCE IS HIGHLIGHTED. PCD TOOLING HAS PREVIOUSLY ONLY BEEN RECOMMENDED TO BE USED ON NONFERROUS MATERIALS. THE USE OF PCD FOR MACHINING OF FERROUS MATERIALS WAS NOT RECOMMENDED DUE TO THE CHEMICAL REACTIVITY BETWEEN THE CUTTING TOOL AND THE MATERIAL BEING MACHINED. TEST RESULTS HAVE SHOWN THAT DIAMOND TOOLING CAN EFFECTIVELY BE USED FOR THE MACHINING OF GRAY CAST IRON IF THE PROPER MACHINING PARAMETERS ARE USED.