Metallurgy of Powder Sintering
Diamond tooling manufacturers tune powder metal blends to match regional aggregate geology across North America.
Blade Technology
Published: 2026-08-09
The Role of Matrix Bond Hardness in Extending Diamond Blade Lifespan
Direct Answer: Matrix bond hardness refers to the wear resistance of the sintered metal powder mixture holding diamond crystals in place. Formulated using precise ratios of cobalt, nickel, bronze, iron, and tungsten carbide, the bond matrix must wear away at the exact speed required by the substrate: eroding quickly on hard materials (soft bond) to release dull diamonds, or resisting erosion on abrasive materials (hard bond) to maximize blade lifespan.
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Frequently Asked Questions
What metal powders make a diamond bond hard?
Tungsten carbide and nickel powders create hard bonds for abrasive materials like asphalt, while cobalt and bronze create softer bonds for hard concrete.