Anne Balogh has written an excellent article over at The Concrete Network on how to choose a diamond blade for concrete cutting. Not only does her article go into detail about the six things that you must consider when choosing a diamond blade, but it also includes a discussion of the four parts of a diamond blade – metal core, diamonds, cutting segment bond (or “matrix”) and cutting segment weld.
Incidentally, we could have made Balogh’s job easier with the Ductile Iron Safety Blade. The Ductile Iron Safety Blade has its diamonds vacuum-brazed onto its surface instead of buried inside a cutting segment, so you don’t have worry about matching its bond to what you’re cutting. It’s also made of solid steel (up to 14″), which means you don’t have to worry about its welds breaking during cutting.
The Concrete Network, Anne Balogh, “Diamond Blades for Cutting Concrete – Buyer’s Guide“