Diamond concentration greatly influences the performance of a diamond saw blade. If the concentration is too low or too high, the ideal cutting result will not be got. The commonly adopted concentration is between 25% and 75%. Generally, when the concentration increases, the diamond blade’s sharpness and cutting efficiency drop, while its service life increases. So when high cutting efficiency is required and the cutting roughness requirement is not high, diamond blades with low diamond concentration and coarse diamond grit are popular.

Diamond concentration also influences the power consumption of the saw machine. When the concentration increases, the power consumption also increases.

Diamond concentration is an important feature of diamond tools, greatly influencing their cutting or grinding efficiency and their processing costs. If the concentration is too high, many diamonds will fall off the tool prematurely. This leads to the waste of the diamonds. If the concentration is too low, the processing efficiency will be decreased, and the processing requirements may not be satisfied.

When choosing the diamond concentration, we should consider bond type, diamond size, processing procedure, the tool’s shape, etc.

Different types of bond have different holding capacities to the diamonds. If the holding strength of a bond is strong, the diamond concentration can be higher.

When the size of diamonds is smaller, the concentration can also be lower to perform precise cutting/grinding and then gain fine finishes. For example, in polishing or high-precision grinding procedure, low concentration resin bond diamond tools are frequently used, and some concentration can be as low as 25%. However, in the coarse grinding procedure which has a high requirement on processing efficiency, big size and high concentration diamond tools can work better.

Normally, the concentration of CBN tools is a little bit higher than the diamond tools’. The reason is that CBN is mainly used to process steel which is normally tougher and softer than the materials which diamonds are used to process.

In choosing diamond concentration, the shape of the diamond tool and its processing manner should also be considered. For the jobs having broad working area, especially for profile grinding which requires retaining the precision of the diamond tool’s shape, face grinding and groove grinding, diamond tools with higher diamond concentration should be chosen.