Model : 1.2367/X38CrMoV5-3/4X5MΦ

Application :  hot working tool steel

Content : Equivalent Steel with exact or nearest equivalents

1.2367 is a hot work steel that is similar to AISI H11 hot work steel, but it contains a higher molybdenum content.

The higher molybdenum gives DIN 1.2367 better hot hardness and temper resistance,along with higher attainable hardness and deeper harden-ability than the more common H11 and H13 hot work steels.

Typical applications include extrustion tooling, hot forging dies, hot heading dies,hot shear blades,hot punches and mandrels,hot grippers dies and die casting tooling for copper and brass.

1.2367 Characteristics of die steel .

The electroslag remelting hot-worked steel has a more uniform structure, a more purified material, a high degree of isotropy and has high high temperature strength, high temperature wear resistance and crack growth resistance.

l Preheating:

To Minimize distortion in complex tools use a double preheat:621-677℃, equalize, then raise to 760-816℃ and equalize, for normal tools, use only the second temperature range as a single preheating treatment.

Austenitizing (High Heat): heat rapidly from the preheat.

Furnace or salt:1024-1080℃ for maximum toughness, use 1024-1038℃.

 For maximum hot hardness and heat checking resistance use 1066-1080℃

l Quenching: Air, pressurized gas, warm oil or salt,

1.For Pressurized gas, a minimum quench rate of approximately 28℃, per minute to below 538℃ is required to obtain the optimu properties in the steel.

2.For oil, quench until black, about 482℃, then cool in still air to 66-51℃.

3.For salt maintained at 538-593℃, equalize in the salt, then cool in still air to 66-51℃,

l Tempering:

Temper immediately after quenching, Typical temperature range is 538-593℃, do not temper below 538℃, hold at temperature for 2 hours then air cool to ambient temperature, double tempering is required

l Annealing:

Annealing must be performed after hot working and before re-hardening.

Heat at a rate not exceeding 222℃ per hour to 732-788℃, and hold at temperature for 1 hour per inch of maximum thickness,2 hours minimum, then cool slowly with the furnace at a rate not exceeding 28℃ per hour to 538℃. continue cooling to ambient temperature in the furnace or in air, the resultant hardness should be a maximum of 235HBW.

Application :

①Used for hot forging dies with high life requirements.

②Aluminum and zinc die-casting molds.

③Aluminum alloy, copper alloy extrusion dies, complex extrusion dies.

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