1.2738
tempered, nickel-alloyed plastic mold steel
Uniform hardness across the cross-section, good polishability, good machinability, nitridable, chrome-platable, weldable according to specifications with all welding processes
Available Product Shapes
Property Features
40 CrMnNiMo 8-6-4
Delivery condition: Tempered to a hardness of 280 to 325 HB (950 – 1100 N/mm2)
Common use: Mould steel for plastic moulds with sheet thicknesses from approx. 400 mm upwards, when uniform hardness, increased toughness and polishability are also required in the contour base. Molds for television housings and back panels, copier housings Bumper molds, molds for dashboards and large exterior body parts, trash can molds, die-cast frames
Chemical Composition
* Chemical Composition (Average %)
- C
- 0.40
- Mn
- 1.50
- Cr
- 2.00
- Mo
- 0.25
- Ni
- 1.00