Die steels (D2, D3) - tool steels of the cold-working category are primarily intended for die work, although their use is by no means restricted to that general eld. Die steels are not designed to resist softening at elevated temperatures, and are therefore restricted to applications at temperatures below ~200-260 °C.
Tool steels (H10, H11, H13) - special tool steels has been developed for tools that in their regular service are in contact with hot metals over a shorter or longer period of time, with or without cooling being applied. The essential property of these steels is their capability to sustain elevated temperature without seriously affecting the usefulness of the tools made from them.
Сhemical composition
| AISI | C | Mn | Si | S | P | Cr | V | W | Mo | Other |
| D2 | 1.40-1.60 | 0.10-0.60 | 0.10-0.60 | ≤0.03 | ≤0.03 | 11.00-13.00 | 0.50- 1.10 | - | 0.70-1.20 | - |
| D3 | 2.00-2.35 | 0.10-0.60 | 0.10-0.60 | ≤0.03 | ≤0.03 | 11.00-13.50 | ≤1.00 | ≤1.00 | - | - |
| H10 | 0.35-0.45 | 0.20-0.70 | 0.80-1.25 | ≤0.03 | ≤0.03 | 3.00-3.75 | 0.25-0.75 | - | 2.00-3.00 | - |
| H11 | 0.33-0.43 | 0.20-0.60 | 0.80-1.25 | ≤0.03 | ≤0.03 | 4.75-5.50 | 0.30-0.60 | - | 1.10-1.60 | - |
| H13 | 0.32-0.45 | 0.20-0.60 | 0.80-1.25 | ≤0.03 | ≤0.03 | 4.75-5.50 | 0.80-1.20 | - | 1.10-1.75 | - |
Heat treatment requirements
| AISI | Annealing T, °C |
Stress Relieving T, °C |
Quenching T, °C |
Quenching Media* |
Tempering T, °C |
Rockwell Hardness |
| D2 | 870-890 | 720-740 | 980-1050 | O/A | 180-230 | 60-64 |
| D3 | 850-870 | 720-740 | 950-980 | O | 180-350 | 57-62 |
| H10 | 860-890 | 730-760 | 1030-1060 | O/A | 560-580 | 55-60 |
| H11 | 860-890 | 730-760 | 1020-1050 | O/A | 560-580 | 53-57 |
| H13 | 860-890 | 730-760 | 1020-1050 | O/A | 560-580 | 52-56 |
*Note: O - oil; A - air
Specification range
| Grade | Round bar/Wire | Flat bar / Sheet / Plate | |
| AISI | Diameter, mm | Thickness, mm | Width, mm |
| D2 | 12.00 - 550.00 | 1.00 - 100.00 | 40.00 - 810.00 |
| D3 | 15.00 - 400.00 | 1.00 - 80.00 | |
| H10 | 15.00 - 550.00 | 1.00 - 100.00 | |
| H11 | 15.00 - 680.00 | 1.00 - 120.00 | |
| H13 | 15.00 - 680.00 | 1.00 - 120.00 | |
Equivalents:
| AISI | W.N. | EU | GOST |
| D2 | 1.2379 | X153CrMoV12 | Х12МФ |
| D3 | 1.2080 | X210Cr12 | X12 |
| H10 | 1.2365 | 32CrMoV12-28 | 3Х3М3Ф |
| H11 | 1.2343 | X37CrMoV5-1 | 4Х5МФС |
| H13 | 1.2344 | X40CrMoV5-1 | 4Х5МФ1С |
