Glassworks: For That same reasons it excels in stone engraving, silicon carbide is superb for glass etching, ensuring precision whilst protecting the integrity of the material. Till the creation of boron carbide in 1929, silicon carbide was the hardest synthetic material known. It's got a Mohs hardness rating of nine, https://siliconcarbideradianttube26925.theobloggers.com/35027275/the-5-second-trick-for-silicon-carbide-semiconductor-pdf