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HOT WORK TOOL STEEL (IND/USA/EUR)

These hot die steels are compatible with heat. They are highly known for great wear resistance, heat conductivity, hardness and robustness at increased temperatures. These tool steels have enhanced features and prove highly useful due to decreased Sulphur levels. They are used where operating temperatures of the tool steel may reach levels where resistance to softening, heat checking and shock is important. It has high heat resistance and medium wear resistance, Distortion in hardening is low.

PROPERTIES & CHARACTERISTICS

  • Resistance to tempering
  • Resistance to thermal shocks
  • High-temperature strength
  • High-temperature toughness
  • High-temperature wear resistance
  • High-temperature corrosion resistance
  • Ductility
  • Excellent Weldability
  • Greater Mechanical Strength
  • High Thermal Conductivity
  • Great polish ability

APPLICATION

  • Forging Dies
  • Punches / Dies for Extrusion on non-ferrous alloys
  • Pressure Die Casting of Aluminium Alloys
  • Moulds for Thermoplastic polymer injection with highpolish ability
  • Die Inserts
  • Hot Shear Blades
  • Rolls for Hot Rolling Machines
  • Tools for Nuts, Screws, Bolts, Rivets, Fasteners, etc
  • Extrusion Press Tools
  • Forming Dies
  • Hot Mandrels
  • Hot Work Punches
  • Hot Shear Knives
AISI / ASTM MATERIAL CHEMISTRY PROPERTY APPLICATION
EN DIN JIS C Si Mn P S Cr W Mo V Ni
H10 32CrMoV12-28 1.2365 SKD7 0.28-0.35 0.10-0.40 0.20-0.40 0.030 max 0.030 max 2.70-3.20 2.50-3.00 0.40-0.75 Excellent resistance to softening at elevated temperature, very resistant to thermal fatigue cracking, and can be water cooled in service. Hot forming (forging) dies for processing heavy metal.
H11 X38CrMoV5-1 1.2343 SKD6 0.33-0.41 0.80-1.20 0.25-0.50 0.030 max 0.030 max 4.80-5.50 1.10-1.50 0.30-0.50 High hardenability, excellent toughness, good resistance to thermal shock when water cooled in service, minimal size change during heat treatment. Dies for pressure casting of light alloys, dies for presses for hot forming steel, brass, aluminium and its alloys, hot work shear blades.
H12 X35CrWMoV5 1.2606 SKD62 0.30-0.40 0.80-1.25 0.20-0.60 0.030 max 0.030 max 4.75-5.50 1.00-1.70 1.25-1.75 0.20-0.50 Excellent resistance to wear, high strength at elevated temperature. Good homogenizing with high toughness. Extra fine structure without gain boundary carbide. Inclusion shape controlled with high cleanliness. Dies and inner liner for extrusion, extrusion tools. Forging: forming dies, press dies, dies for die-carbide, hot punch, hot shear blades, immediate roller for cold rolling.
H13 X40CrMoV5-1 1.2344 3 0.33-0.45 0.80-1.20 0.30-0.50 0.030 max 0.030 max 4.75-5.50 1.10-1.75 0.80-1.20 High hardenability, excellent wear resistance and hot toughness, good thermal shock resistance, (ESR) H13 has greater homogeneity and an exceptionally fine structure in improved machinability, polish ability and high temperature tensile strength. Dies for pressure casting of light alloys, dies for aluminium extrusion dies for hot forming of steel, extractors.
H21 X30WCrV9-3 1.2581 SKD5 0.26-0.36 0.15-0.25 0.20-0.40 0.030 max 0.030 max 3.00-3.75 8.50-10.00 0.30-0.66 Exhibits excellent resistance to softening at elevated temperature. Should not be water cooled in service unless the tool includes a continuous flow of internal water cooling. Thermal shock should be avoided. Extrusion moulds and cast moulds for copper, aluminium and zinc alloys.
L6 56NiCrMoV-7 1.2714 SKT4 0.50-0.60 0.40 max 0.65-0.95 0.030 max 0.030 max 1.0-1.20 0.50-0.55 0.08-0.20 1.60-1.80 High impact toughness and good resistance to softening at elevated temperature. Good thermal resistance to thermal shock and thermal fatigue cracking, small dimensional changes during hardening. Blocks for dies, hammers and pile drivers, rams of power hammers, hot mill rolls, very hard, cold work dies and punches.
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