Steel CR7V-L

CR7V-L steel:
strength, wear resistance and thermal shock resistance.

Steel CR7V-l: high Cr alloyed special steel with Mo and V additives is characterised, with good high-temperature strength, by particularly high wear resistance, both for cold and hot work. Thermal shock resistance is good.

  • High-temperature strength .
  • Wear resistance.
  • Thermal shock resistance.

For cold work:

  • Punches and shear blade for sheet metal thickness of approx. 6-12 mm.


For hot work:

  • Die inserts and mandrels.
  • Extrusion dies for steel forming.
  • Hot extrusion of copper and copper alloys.
  • Hot shear blades and deburring tools.
  • Drawing rollers for steel bottle manufacturing.

Physical properties of CR7V-L

Temperature in °C20-10020-20020-40020-600
Thermal expansion in 10-6m/m x K11.411.912.513.1
Temperature in °C20200400
Thermal conductivity in W/m x K26.729.830.8
Temperature in °C20
Density in g/cm37.6

Heat treatment

Soft annealingTemperature: 820 – 840 °C, 4 – 6 hrs.
Cooling: slow furnace cooling
Hardness: max. 240 HB
HardeningTemperature: 1030 – 1040 °C
Cooling: in warm bath of approx. 540 °C, in air or oil/polymer; Interrupt oil or polymer cooling at 250 – 300 °C or vacuum hardening.
TemperingTemperature: 500 – 700 °C
Hardness: see tempering graph
Preheat before useTemperature: 150 – 350 °C

Graphs and datasheets




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