H.1 / Hardened Steels (44-48 HRC)
| Commercial name | DIN | UNI | Wrknr | AISI | ASTM | GB China | India | Hardness | Unit of measurement | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
| — | — | — | — | — | — | — | — | 44 | — | 48 | HRC |
H.2 / Hardened Steels (48-55 HRC)
| Commercial name | DIN | UNI | Wrknr | AISI | ASTM | GB China | India | Hardness | Unit of measurement | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
| — | — | — | — | — | — | — | — | 48 | — | 55 | HRC |
H.3 / Hardened Steels (56-60 HRC)
| Commercial name | DIN | UNI | Wrknr | AISI | ASTM | GB China | India | Hardness | Unit of measurement | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
| — | — | — | — | — | — | — | — | 56 | — | 60 | HRC |