Boron Carbide Double Classified for Sapphire Lapping Grit Size:F360 - DC B4C (40/12 mkm) Sapphire F4SV 4-1/8" Length: (F4SV Nozzles

F4SV 4-1/8" Length:  (F4SV Nozzles = 1-3/8" O

F500 and finer: Subtle refinement rather than rapid material removal

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Glass Bead Mil-G-9954A:  This spec has been superseded by MIL-PRF-9954B

What is the Boron Nitrde content

Boron Carbide Double Classified for Sapphire Lapping Grit Size:F360 - DC B4C (40/12 mkm) Sapphire F4SV 4-1/8" Length: (F4SV NozzlesOur B4C powders are graded specifically for polishing and lapping Sapphire without scratching. Emphasis has been placed on grain shape during the crushing process, along with a special multi stage double gradation process. This Boron Carbide product (B4C SP F400. 5) features a double classification, with particle diameters approximately between 8 and 32 micrometers. A slightly coarser F360 grade (40 12 micrometers) is available and is also double