DH31-EX

High strength, tough and high heat check resistance hot work die steel.

DH31-EX is a hot working die steel with the best balance of strength and
toughness showing the comparable softening resistance to SKD7 and twice hardenability as that of SKD61.


DH31-EX
NADCA Certification


Features:

  • High hardenability
    High toughness is obtained even in large size die.
  • High strength
    High softening resistance at elevated temperature contributes to high wear
    resistance.
  • High toughness
    DH31-EX has higher toughness than that of SKD61.
  • High heat check resistance
    Excellent heat check resistance leads to longer life.

 

Applications:

  • Aluminum die cast dies especially for large size – long life use
  • Aluminum die cast parts such as pins and plunger sleeve
  • Hot forging dies
  • Hot pressing dies
  • Aluminum extrusion dies

 

Examples of Applications:

 

Heat Treatment

DH31-EX_heat_treatment

Microstructure (Quenched and tempered)

DH31-microstructure

Tempering Hardness

DH31-EX_tempering_hardness_2

Softening Resistance

DH31-EX_softening_resistance

Toughness

DH31-EX_Toughness

Fatigue Properties

DH31-EX_fatigue_properties

CCT Curves

DH31-cct_curves

Quenching rate vs. Toughness

DH31-EX_quenching_rate_vs_toughness

Heat Checking Resistance

DH31-heat_checking_resistance

Al Erosion Resistance

DH31-ai_erosion_resistance

Hot Hardness

DH31-EX_hot_hardness

Nitriding Characteristics

DH31-EX_nitriding_characteristics

Machinability Endmilling

DH31-EX_machining_endmilling

Machinability Drilling

DH31-EX_machining_drilling

Thermal Expansion Rate

DH31-EX_thermal_expansion_rate_2

Thermal Conductivity

DH31-EX_thermal_conductivity_2

Specific Heat

DH31-EX_specific_heat_2

Density

DH31-EX_density_4


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responsible for damage caused by misunderstanding or improper use of the
technical information contained in this Web site. The contents of this Web site
may be subject to change without notice. Please inquire of related department
for the latest information. No portion of this Web site may be reproduced
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