SC - Silicon Carbide

Wear Behavior: Shows micro-abrasive wear with sharp edges, rough, brittle and sensitive to fracture.
Hardness: Very Hard
Stamina: Less Tough
Structure: Crystalline

AO - Aluminum Oxide

Wear Behavior: Shows chisel-shaped, blocky abrasive macro-wear
Hardness: Hard
Durability: Durable
Structure: Crystalline irregular

It is used as a hard and durable abrasive for grinding wood metals and veneers, and is also designated NK, HK, EKR, EKW and EK in some qualifications.

ZR - Zirconium

Wear Behavior: Chisel-shaped, block drop-shaped abrasive micro-wear, self-setting
Hardness: Hard
Durability: Very durable
Structure: Crystalline regular

Hard and very durable abrasive for high chip grinding of stainless steel, metal and wood materials

CE - Ceramic

Wear Behavior: Sharp-edged, pointed abrasive micro-wear, self-sharpening
Hardness: Hard
Durability: Very durable
Structure: Microcrystalline

Tough and very durable, long-lasting and self-sharpening abrasive for chip removal of high alloy steel and stainless steel