Elite Series - 40 Grit Single Segment Yellow Extremely Hard Concrete

- Mid-coarse metal-bond grinding segment for the second pass — 40 grit sits between the most aggressive cuts (16, 25) and the refinement stages (50, 80, 100). Removes the deeper scratches left by the coarsest grits while continuing to expose aggregate and shape the slab profile.

- Single-segment configuration for aggressive cutting on light machines — a single segment per shoe creates less surface contact than a double, which means faster cutting speed and more aggressive material removal at the trade-off of shorter tool life. Recommended for grinders 25" and smaller, where the lighter machine weight benefits from the increased per-diamond pressure that a single segment delivers.

- Engineered for extremely hard concrete — extremely hard concrete (typically 7,000+ PSI, Mohs 8–9) includes power-troweled commercial slabs, high-performance industrial floors, and densified surfaces that defeat standard bonds entirely. The yellow color code in Simiron's Elite range designates the softest metal bond available, engineered to wear away aggressively so fresh diamond is continuously exposed even on slabs that would glaze every other bond.

- The last-resort bond when other tools have already glazed — yellow sits at the bottom of the bond-hardness scale: orange (very soft concrete) → black (soft) → red (medium) → blue (medium-hard) → gold (hard) → yellow (extremely hard). If gold tooling is glazing on a hard slab, yellow is the next escalation. If yellow glazes too, the alternative is reducing machine weight, slowing RPM, adding water mist, or applying silica sand to reopen the diamonds.

- Premium tier in the metal-bond range — Elite Series tooling carries higher diamond concentration and stricter QC tolerances than entry-level segments, delivering more consistent cut depth and longer usable life on commercial-volume work. A clean cut at 40 grit is what makes the 80 and 100 grit steps faster — leave scratches here and you chase them all the way to the final resin pad.