Extreme hardness and wear resistance
Diamond's Knoop hardness exceeds 7 000 HK, roughly ten times that of cemented carbide. Consequently, the cutting edges remain sharp after slicing thousands of linear meters of highly abrasive materials such as granite, basalt, cured concrete and fiber-reinforced composites. Compared with conventional abrasive wheels or tungsten-carbide tipped blades, diamond tools often last 30–100 times longer before diameter reduction becomes unacceptable. The slow wear rate also means the blade thickness—and therefore cut width—stays almost constant, reducing kerf loss and material waste.
High thermal conductivity and heat resistance
Synthetic diamond conducts heat five times better than copper. This property, combined with segment bonding alloys that tolerate temperatures above 800 °C, allows frictional heat generated during dry cutting to be dissipated rapidly. As a result, the risk of segment annealing or blade warping is much lower than for resin-bonded or HSS blades. Under wet cutting conditions, the same conductivity helps prevent thermal shock when coolant suddenly contacts the hot segments.
Versatile bonding systems
Diamond grit is anchored in metal, resin, vitrified or hybrid matrices. Sintered metal-bond segments (bronze, cobalt or iron-based) give maximum life in heavy-duty applications such as road sawing or quarrying. Resin bonds, being softer, expose fresh diamonds quickly and are preferred for fine, chip-free cuts in marble or glass. Vitrified bonds strike a balance between aggressiveness and wear rate, making them common for precision slicing of electronic substrates. The ability to tailor the bond to the job means one basic diamond blade design can be optimized for dozens of different materials.
Segmented, continuous-rim and turbo configurations
The rim geometry is chosen to balance cutting speed, surface finish and coolant flow. Segmented rims with narrow gullets remove slurry fast and allow air cooling, ideal for asphalt or concrete. Continuous rims create smooth edges on brittle tile or stone. Turbo rims, having a serrated edge, combine the aggressiveness of a segmented blade with the quiet, low-chipping behavior of a continuous one.