Tavaliselt kasutatavad kõvadusühikud on: Brinelli kõvadusarv (HB), Vickersi kõvadusarv (HV), Rockwelli kõvadusarv (HRA, HRB, HRC jne) ja Leebi kõvaduse väärtus (HLD, HLS, HLE jne).
The commonly used units of hardness are: Brinell hardness number (HB), Vickers hardness number (HV), Rockwell hardness number (HRA, HRB, HRC, etc), and Leeb hardness value (HLD, HLS, HLE, etc).
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