200 g (F16 - F1000) Grit Black Silicon Carbide (SiC, C48), Abrasive, Polishing, Lapping, Grinding Black Silicon Carbide (SiC, C48) is very hard (9 Mohs) synthetic abrasive material. It is commonly used for Ceramic, metal lapping, and polishing applications, Rock and stone polishing and engraving, Lapping of piston rings and gears, Grinding of nonferrous materials, Finishing tough and hard materials, Glass etching and glass carving industries, Rock tumbling industries. Black Silicon Carbide contains some free silicon (Si) and carbon (C) and is not as pure as Green SiC. Packaged in a plastic bag. Contains 200 g of Black Silicon Carbide. Specifications of Silicon Carbide: Grit: F16 - F1000 Thermal Cond.: High (100 W/m-K) approximately. Safety: Avoid breathing dust; wear protective gear Purity: 99% approximate Structure: Monocrystalline Color: Black Hardness: Knoop 2480 - 2550 / Mohs 9.1 Stability: Stable