Steel 1.2889 - HMoD

1.2889 - HMoD steel:
maximum strength and tempering resistance

Because of its composition, steel type 1.2889 – HMoD is a hot-work tool steel with maximum high-temperature strength and tempering resistance with particular high-temperature wear resistance. HMoD has the same areas of application as the steel HWD and is related in respect of the analysis. HMoD is a molybdenum alloy rather than a tungsten alloy with otherwise comparable analysis. Better toughness behaviour can be achieved as a result.

Properties of steel type 1.2889 – HMoD
 
  • Maximum high-temperature strength.
  • Good tempering resistance with particular .
  • Wear resistance.
The most common applications for steel type 1.2889 – HMoD are:
 
  • Extrusion press dies for brass.
  • Die versions for heavy metal processing.
  • Die-casting dies for casting heavy metals and relatively thin-walled cast pieces.
  • Heavy duty cores in the pouring stream, when casting light metals.
  • Impression dies, especially mandrel inserts for hot pressing of heavy metals.
  • Small die inserts and warm extrusion dies in steel forming.

Physical properties of 1.2889 - HMoD steel

Temperature in °C20-10020-20020-40020-600
Thermal expansion in 10-6m/m x K11.211.812.313.3
Temperature in °C20200400
Thermal conductivity in W/m x K24.128.8 32.3

Heat treatment

Soft annealingTemperature: 820 – 840 °C, 4 – 6 hrs.
Cooling: slow furnace cooling
Hardness: max. 240 HB
HardeningTemperature: 1120 – 1150 °C
Cooling Air, warm bath of approx. 540 °C, Oil/polymer; Interrupt oil or polymer cooling at 250 – 300 °C or vacuum hardening
TemperingTemperature: 580 – 750 °C
Hardness: see tempering graph
NitridingPossible
Preheat before useTemperature: 200 – 400 °C

Graphs and datasheets of 1.2889 - HMoD

1.2889 HMoD steel

1.2889 HMoD steel

1.2889 HMoD steel

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