Tungsten carbide is renowned for its exceptional hardness and wear resistance, making it a critical material in industrial tooling, machining, and wear-resistant applications. Understanding its Rockwell hardness is essential for engineers, manufacturers, and users to select the right grade for specific tasks and to ensure quality control. This comprehensive article explores the Rockwell hardness of tungsten carbide, its comparison with other hardness scales, factors influencing its hardness, applications, and testing methods.