H10 Steel

H10 Tool Steel is capable of being heat treated to higher hardness than the tungsten hot work steels, and in addition offers greater toughness. H10 tool steel has good thermal fatigue characteristics, and unlike the tungsten hot work steels and H10 hot work tool steels may be safely water cooled in service.

H10 hot works tool steel is recommended for difficult hot work tooling applications such as hot punches, die casting dies, forging dies, hot shear blades, hot gripper dies, and extrusion tooling etc.

Applications for AISI H10 Tool steel

H10 tool steel is generally used for highly stressed hot work tools, mainly for the processing of heavy alloys, such as:

  • Extrusion Industry: Dies, Inner Liners, Stems, Pressure Pads, Mandrels for Extrusion
  • Forging Industry: Forming Dies, Press Dies, Pressing Mandrels
  • Die Casting Industry: dies for die-casting, die inserts, hot shear blades, moulds for processing brass and light metal

    • USA

    ASTM
    A681

    H10/T20810

    German

    DIN EN ISO 4957

    1.2365/32CrMoV12-28

    Japan

    JIS
    G4404

    SKD7

    British

    BS
    4659

    BH10

    Grade C Mn P S Si Cr V W Mo
    H10/T20810 0.35 - 0.45 0.20 - 0.70 0.03 0.03 0.80 - 1.25 3.00 - 3.75 0.25 - 0.75 - 2.00 - 3.00
    1.2365/32CrMoV12-28 0.28 - 0.35 0.15 - 0.45 - - 0.10 - 0.40 2.70 - 3.20 0.40 - 0.70 - 2.50 - 3.00
    SKD7 0.28 - 0.35 0.15 - 0.45 0.03 0.03 0.10 - 0.40 2.70 - 3.20 0.40 - 0.70 - 2.50 - 3.00
    BH10 0.30 - 0.40 … - 0.40 0.035 0.035 0.75 - 1.10 2.80 - 3.20 0.30 - 0.50 - 2.65 - 2.95