Die Casting

1.2367 VEXtra

Hot work tool steel with ESR properties. Very good hot strength and hot wear resistance and also improved toughness.

Chemical Composition

NO DIN C Si Mn P S Cr Mo V
1.2367 VEXtra X38CrMoV5-3 0,35-0,40 0,20-0,40 0,20-0,50 Max 0,02 Max 0,005 4,80-5,50 2,30-2,60 0,50-0,60

Material Properties

  • High hot strength and tempering back resistance.
  • Very good creep resistance.
  • Good thermal shock resistance.
  • Good toughness and ductility.
  • Good weldability
  • Good machinability.
  • Up to 54 HRc after heat treatment.
  • Recommended working hardness 42-48 HRc
  • Good nitriding and coating ability.


  • Aluminium extrusion dies in tough conditions or for better surface quality
  • Aluminium extrusion dies for better surface quality on the profile
  • Against to deformation problems in al extrusion dies
  • Stems, support blocks, bolsters, stamps, etc in aluminium extrusion tools.
  • Liners in Al extrusion
  • Shot sleeves on die casting.
  • Cores, pins, and inserts on the hot sections of the die casting dies.
  • Inserts of symmetric press forging dies.
  • Preferred for dies and tools operating at elevated temperatures.
  • Not recommended to use on large dies because its toughness is lower than 2343 and 2344 and the other modified grades.
  • Welding rolls in pipe profile manufacturing

Heat Treatment

Soft Annealing 630-800°C
Stress Relieving 600-650°C
Hardening 1020-1080°C
Tempering 530-700°C

Physical Properties

20°C 100°C 200°C 300°C 500°C
Elastic Modulus [kN/mm²] 218 - 198 - 179
Thermal Expansion Coefficient [10ˉ6/K] - 11,5 12,0 12,2 12,9
Thermal Conductivity [W/mK] 29,7 - 33,5 - 34,8

Delivery Condition

230 HB, Soft Annealed.

Tempering Graph