Tool steel with excellent heat hardening characteristics due to its high nickel concentration, polishability, photo-etchability, and machinability.
Hardened inserts for plastic injection molds, bending tools, pressure bars in bending tools, shear blades.
In bars 1030 mm long with machining allowance, plates with rectangular and square sections, subjected to annealing treatment, maximum hardness 285 HB (max 965 N/mm2)
| C | Cr | Mo | No |
| 0,45 | 1,4 | 0,3 | 4.1 in % |
| Annealing stress relief | 600 – 650 °C |
| Workability annealing | 620 – 650 °C |
| Hardening by quenching | 840 – 870 °C |
| Quick cooling | Oil, air, or hot bath |
| Discovery | 338 – 374 °F |
