A segment that has stopped biting is seldom a diamond fault. The matrix around the grits has usually grown too resistant to wear, and no change of diamond grade will bring the edge back. Correcting the powder is the cheapest route back to a cutting edge.
Sharpness Is a Wear Ratio, Not a Diamond Spec
Sharpness and life also compete. Our data shows a sharpness gain in the 85–95% range costing roughly 10–30% of the life. Observed ranges, not promises — but the direction is consistent.
Ultra-Fine Iron Powder: More Orderly Wear, Not a Softer Bond
Most reduced iron powders measure roughly 40–100 µm. Drop into the 3–10 µm band and three things shift together: surface area rises, so diffusion completes more fully at an unchanged furnace setting; the sintered body emerges denser and more even; and the working face recedes evenly instead of failing in patches.
A dense bond can therefore still renew its own edge — and because fine iron sinters so readily, it displaces part of the copper, usually the priciest ingredient in the mix.
Cobalt Is Now a Paperwork Question, Not Only a Price One
Cobalt metal now carries an EU-wide harmonized classification — Carcinogenic Category 1B — under the CLP Regulation. Five of its salts are named on REACH's Candidate List of Substances of Very High Concern; the metal itself falls under ECHA's CoRAP review rather than being listed automatically. European buyers increasingly ask for a declared cobalt content, not merely a cost per kilogram.
Where to Start
Our range covers SCF-10 (Fe-Cu-Sn with P activation; median size 24.76 µm, hardness 95–105 HRB), the S2386 additive, the TUF iron powder and SCF-07 fine-particle grades, and KIN-03 (Fe-Cu-Co-Sn; median size 4.8–8.2 µm, hardness 99–104 HRB; sintered 800–850 °C). Send your cutting material, machine setup and current recipe to [email protected] and we will match samples to them.
Please feel free to consult for more details.
Email: [email protected]
