The material is characterized by its black hue, crumbly consistency, and a partially block-like structure. Its outstanding micro-fracture quality enhances performance in grinding efficiency and surface finishing, making it particularly well-suited for high-speed machining.

The substance exhibits an amber hue, a transparent quality, and a partially blocky structure. It possesses a moderate level of toughness, contributing to extended tool lifespan and versatile applications.

The material is characterized by its black color, moderate toughness, and a partially blocky structure. It demonstrates good thermal stability, striking a balance between grinding performance and the lifespan of tools.

Featuring a deep brown hue, elevated toughness, and a distinctive sharp block-like structure, this material boasts superior self-sharpening capabilities. Its high thermal stability contributes to a rapid regeneration of a sharp cutting edge, resulting in an extended tool lifespan.