What Can Scratch Tungsten Carbide?

Tungsten carbide is renowned for its exceptional hardness and durability, often marketed as "scratch-resistant" in jewelry and industrial applications. However, despite its Mohs hardness rating of 8–9, certain materials and conditions can indeed scratch or damage it. This article explores the science behind tungsten carbide's scratch resistance, identifies materials capable of scratching it, and provides practical advice for maintaining its finish.