TQ1 steel:
maximum toughness and high-temperature strenght.

Steel TQ1 is a Cr-Mo-V alloyed hot work tool steel with very good high-temperature strength characteristics and maximum toughness. This quality is also characterised by good thermal shock resistance and is only manufactured in remelted form according to the ESU process.

  • High strength.
  • Maximum toughness.
  • Thermical schock resistance.
  • Pressure die casting.
  • Extrusion presses for heavy duty press stamps > 1100 MPa, dies.
  • Drop forging.
  • Hot forming.

Physical properties of TQ1

Temperature in °C20-10020-20020-40020-600
Thermal expansion in 10-6m/m x K10.311.312.613.0
Temperature in °C20200400
Thermal conductivity in W/m x K29.831.031.4
Temperature in °C20
Density in g/cm37.8
Temperature in °C20
E module in GPa214

Heat treatment

Soft annealingTemperature: 820 – 840 °C, 4 – 6 hrs
Cooling: slow furnace cooling/td>
Hardness: max. 220 HB
HardeningTemperature: 1010 – 1020 °C
Cooling Interrupt oil or polymer cooling at 230 – 280 °C or vacuum hardening
TemperingTemperature: 540 – 680 °C
Hardness: see tempering curve
NitridingIf die-casting dies are to be nitrided, nitriding program 99 should be selected. This nitriding layer does not have a compound layer and therefore does not have a negative impact on the formation of thermal shock cracks
Preheat before useTemperature: 150 – 350 °C depending on area of application

Graphs and datasheets of TQ1




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