| | P H M K | S N |
| ISO | CMC- Code1 | CMC class denotation | Reference hardness |
| 07.1 07.2 | malleable iron: ferritic malleable iron:pearlitic | 130 HB 230 HB |
| 07.3 | malleable iron: martensitic | 250 HB |
| 08.1 | greycast iron: low tensile strength | 180 HB |
| K | 08.2 | greycast iron: high tensile strength | 245 HB |
| 08.3 | greycast iron: austenitic | 175 HB |
| 09.1 | nodular cast iron: ferritic | 160 HB |
| 09.2 | nodular cast iron:pearlitic | 250 HB |
| 09.3 | nodular cast iron: martensitic | 330 HB |
| 20.1 | heat-resistingsuperalloy: iron-based | |
| 20.11 | heat-resistingsuperalloy: iron-based: annealed or solution treated | 200 HB |
| 20.12 | heat-resistingsuperalloy: iron based: annealed or solution treated and cured | 280 HB |
| 20.2 | heat-resistingsuperalloy: nickel-based | |
| 20.21 | heat-resistingsuperalloy: nickel-based: annealed or solution treated | 250 HB |
| 20.22 | heat-resistingsuperalloy: nickel-based: cured or solution treatedplus cured | 350 HB |
| 20.23 | heat-resistingsuperalloy: nickel-based: cold-drawn | 275 HB |
| 20.24 | heat-resistingsuperalloy: nickel-based: cast or cast and cured | 320 HB |
| 20.3 | heat-resistingsuperalloy: cobalt-based | |
| 20.31 | heat-resistingsuperalloy: cobalt-based: annealed or solution treated | 200 HB |
| 20.32 | heat-resistingsuperalloy: cobalt-based: annealed or solution treatedplus cured | 300 HB |
| S | 20.33 | heat-resistingsuperalloy: cobalt-based: cast or castplus cured | 320 HB |
| 21.11 | nickel technically pure(90 %),heat-treated or cold-drawn | 130 HB |
| 21.21 | nickel alloyed with copper(25-50%),heat-treated,cold-drawn,cast | 180 HB |
| 21.22 | nickel alloyed with copper(25-50%),tempered | 220 HB |
| 21.23 | nickel alloyed with copper(25-50%),age-hardened | 340 HB |
| 22.1 | heat-resistingsuperalloy: niobium-based | 190 HB |
| 22.2 | heat-resistingsuperalloy: molybdene-based | 250 HB |
| 22.3 | heat-resistingsuperalloy: tantalum-based | 230 HB |
| 22.4 | heat-resistingsuperalloy: tungsten-based non-alloyed | |
| 22.5 | heat-resistingsuperalloy: tungsten-based alloyed | |
| 23.1 | titanium: -titanium annealed / Pure titanium(99,5% Ti) | 400 N/mm2 |
| 23.21 | titanium: -like and + -alloys in annealed state | 950 N/mm2 |
| 23.22 | titanium:+-alloys in cured state, -alloys annealed or cured | 1,050 N/mm2 |
| 30. | aluminium alloys: | |
| 30.11 | aluminium alloys: rolled or rolled and cold-cured. Not cured. | 60 HB |
| 30.12 | aluminium alloys: rolled or rolled and cured | 100 HB |
| 30.21 | aluminium alloys: cast,not cured | 75 HB |
| 30.22 | aluminium alloys: cast or castplus cured | 90 HB |
| 30.3 | aluminium alloys:pure aluminium | 30 HB |
| 30.41 | aluminium alloys: cast,Si 13-15 %(Mg,Cu) | 130 HB |
| 30.42 | aluminium alloys: cast,Si 16-22 %(Mg,Cu) | 130 HB |
| 33. | copper alloys | |
| 33.1 | copper and copper alloys: machiningalloys(Pb > 1%) | 110 HB |
| 33.2 | copper and copper alloys: brass and leaded bronze(Pb≤1 %) | 90 HB |
| 33.3 | copper and copper alloys: bronze and lead-free copper(incl. cathode copper) | 100 HB |
| 40.1 | thermoplastic | 50 N/mm2 |
| 40.2 | thermoset | 80 N/mm2 |
| 40.3 | thermoset and fi ber-reinforcedplastic | 80 N/mm2 |
| 40.4 | carbon fi bre reinforcedpressed material | 1,500 N/mm2 |
| 65 | i graphite | 100 N/mm2 |
