
| ISO | CMC- Code1 | CMC class denotation | Reference hardness |
| 01.0 | non-alloysteel: not hardened with 0.05 - 0.1 % C | 90 HB | |
| 01.1 | non-alloysteel: not hardened with 0,1 - 0,25 % C | 125 HB | |
| 01.2 | non-alloysteel: not hardened with 0,25 - 0,55 % C | 150 HB | |
| 01.3 | non-alloysteel: not hardened with 0,55 - 0,8 % C | 170 HB | |
| 01.4 | non-alloysteel: high carbon steel,annealed | 210 HB | |
| 01.5 | non-alloysteel,hardened and tempered | 300 HB | |
| 02.1 | low-alloysteel: not hardened | 175 HB | |
| 02.10 | construction steel | 175 HB | |
| 02.12 | ball bearingsteel | 210 HB | |
| 02.2 | low-alloysteel: hardened and tempered | 330 HB | |
| P | 02.3 | low-alloysteel: hardened | 400 HB |
| 03.11 | high-alloyed steel,annealed | 200 HB | |
| 03.13 | high-alloyed steel,annealed HSS | 200 HB | |
| 03.21 | high-alloyed steel,hardened tool steel | 300 HB | |
| 03.22 | high-alloyed steel,hardened steel,misc. | 380 HB | |
| 06.1 | cast steel: non-alloy | 150 HB | |
| 06.2 | cast steel: low-alloy (alloyingelements < 5%) | 200 HB | |
| 06.3 | cast steel: high-alloyed(aloyingelements > 5%) | 200 HB | |
| 06.31 | cast steel: stainless: ferritic/martensitic | 200 HB | |
| 06.32 | cast steel: stainless: austenitic | 200 HB | |
| 06.33 | cast steel: manganese steel(12-14% Mn) | 250 HB | |
| 06.34 | cast steel: hardened and tempered | 380 HB | |
| H | 10.1 | ingot mould hard cast iron: cast or castplus cured | 400 HB |
| 04.1 | extra hard steel: tempered | 59 HRC | |
| 05.1 | stainless steel: annealed,ferritic/martensitic | 200 HB | |
| 05.10 | stainless steel: rolled/forged: ferritic/martensitic,machiningsteel | 200 HB | |
| 05.11 | stainless steel: rolled/forged: ferritic/martensitic,not hardened | 200 HB | |
| 05.12 | stainless steel: rolled/forged: ferritic/martensitic,PH hardened | 330 HB | |
| 05.13 | stainless steel: rolled/forged: ferritic/martensitic,hardened | 330 HB | |
| 05.2 | stainless steel: annealed,austenitic | 200 HB | |
| 05.20 | stainless steel: rolled/forged: austenitic,machiningsteel | 200 HB | |
| 05.21 | stainless steel: rolled/forged: austenitic | 200 HB | |
| 05.22 | stainless steel: rolled/forged: austenitic,PH hardened | 330 HB | |
| 05.23 | stainless steel: rolled/forged: super austenitic | 200 HB | |
| M | 05.3 | stainless steel: tempered,martensitic | 330 HB |
| 05.4 | stainless steel:precipitation hardened steel | 330 HB | |
| 05.51 | stainless steel: forged: austenitic,ferritic:(duplex)not weldable > 0,05 % C | 230 HB | |
| 05.52 | stainless steel: forged: austenitic,ferritic:(duplex)not weldable < 0,05 % C | 260 HB | |
| 15.11 | stainless steel: cast: ferritic/martensitic: not hardened | 200 HB | |
| 15.12 | stainless steel: cast: ferritic/martensitic: PH hardened | 330 HB | |
| 15.13 | stainless steel: cast: ferritic/martensitic: hardened | 330 HB | |
| 15.21 | stainless steel: cast: austenitic | 200 HB | |
| 15.22 | stainless steel: cast: austenitic: PH hardened | 330 HB | |
| 15.23 | stainless steel: cast: superaustenitic | 200 HB | |
| 15.51 | stainless steel: cast: austenitic,ferritic:(duplex)not weldable > 0.05% C | 230 HB | |
| 15.52 | stainless steel: cast: austenitic,ferritic:(duplex)weldable < 0.05% C | 260 HB |
1 SANDVIK-Coromant material code