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Hot Work Tool Steel Alloy Comparison


Cold Work SteelShock SteelHot Work Tool SteelHigh Speed SteelAerospace
    Use checkboxes to select two or more alloys.
  ASTM Grade Name Description MI1 HRC   Toughness
  Wear Resistance
  Hot Hardness
    LSS™ 2714 (DIN 1.2714 Modified)  A nickel-chromium-molybdenum hot work steel that exhibits high impact toughness and good resistance to softening. Also available prehardened to 352-401 HBS.  85  41 




  H10  LSS™ H10  A chromium type, air hardening hot work steel with increased molybdenum for improved resistance to softening at elevated temperatures.  95  48 




  H10A  HW 108™  A cobalt addition to the H10 chemistry provides increased resistance to softening at elevated temperatures.  95  48 




  H11  LSS™ H11  An air hardening, chromium-molybdenum hot work steel which exhibits the highest toughness of the 5% chromium family.  75  48 




    LSS™ 2367 (DIN 1.2367)  A high molybdenum modification of H11 which exhibits better hot hardness, temper resistance, hardenability and attainable hardness than H11.  70  48 




  H13  LSS™ H13  The most versatile air hardening, 5% chromium hot work steel. Exhibits a good combination of high toughness, temper resistance and thermal fatigue resistance.  65  48 




  Premium H13  LSS™ H13  An ESR or VAR remelted version of H13 with tighter compositional limits, improved cleanliness and higher toughness. Meets specifications of the die casting industry.  40  48 




  H13S  Viscount 44®  A resulfurized H13 tool steel that is prehardened to the 42 - 46 HRC range. The sulfur addition makes it machinable in the hardened condition.  35  44 




    Koncor™  A high carbon, high vanadium modification of H13 which exhibits excellent resistance to wear and elevated temperature softening.   55  55 




  H19  LSS™ H19  A tungsten hot work steel with a cobalt addition for improved resistance to softening and thermal fatigue, but with reduced thermal shock resistance.   55  54 




  H21  LSS™ H21  A low carbon, medium tungsten hot work steel for high temperature, long run applications. Cannot be externally water cooled.  55  50 




  H26  LSS™ H26 Mod™  A low carbon modification of T15 HSS that provides very good wear resistance at elevated temperatures. Should not be externally water cooled.  50  60 




  H41  LSS™ H41  A low carbon M1 high speed steel. Exhibits excellent resistance to softening and thermal fatigue, but with reduced thermal shock resistance.  50  60 




    CPM® 1V®  A powder metal tool steel with a unique combination of high toughness and high strength, along with high temper resistance for hot work applications.   60  54 




  M2  Double Six™  The classic, general purpose high speed steel. Occasionally used in hot work tooling applications where toughness is not a primary concern.  50  60 




Machinability Index: Relative machinability, as a percentage, compared to machining a 1% carbon tool steel.