Khaitan Steel Forgings
Khaitan Steel Forgings
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D3 Tool Steel Angle

Providing you the best range of d3 tool steel angle with effective & timely delivery.

D3 Tool Steel Angle

D3 Tool Steel Angle
  • D3 Tool Steel Angle
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Approx. Price: Rs 60 / KgGet Latest Price

Product Details:

AlloyWith Alloy
ShapeU shape
Density7.7 x 1000 kg/m3
Melting point1421 degree C
MaterialTool Steel

Cold-work tool steels which include D2, D3, D4, D5, and D7 steels are high-carbon, high-chromium steels. Apart from D3 steel all group D steels have 1% Mo and are air hardened. Type D3 steel is oil-quenched; though small sections can be gas quenched after austenitization using vacuum. As a result, tools made with type D3 steel tend to be brittle during hardening. Type D2 steel is the most commonly used steel among the group D steels. The D3 steels contain 1.5 to 2.35% of carbon and 12% of chromium.

Equivalent metals of D3 steel are:

  • AFNOR Z 200 C 12
  • DIN 1.2080
  • UNI X 21O Cr 13 KU
  • JIS SKD1
  • B.S. BD 3
  • ASTM A681
  • FED QQ-T-570
  • SAE J437
  • SAE J438
  • UNS T30403

Product Details:

  • Annealing Annealing of D3 tool steel needs to be done in a controlled atmosphere furnace.
  • D3 tool steels should be heated thoroughly to 871°C (1600°F) and cooled slowly at a rate of not more than -6°C (20°F) per hour, until the furnace is black

Heat Treatment:
  • D3 tool steel requires hardening and tempering to achieve maximum properties.
  • For maximum accuracy, the parts of D3 tool steel should be stress relieved after roughing operations.
  • Stress should be relieved at 648°C (1200°F) for one hour and cooled slowly.

  • The D3 tool steel should be cooled to room temperature and should be tempered immediately.
  • The parts should be placed in the tempering furnace and increased slowly to the desired tempering temperature.
  • Tempering for 1 hour per inch of thickness is required.

  • D3 tool steel should be heated properly since it is very sensitive to overheating and if not heated maximum hardness cannot be achieved.
  • The work should be directly placed in a furnace preheated to 954°C (1750°F) and soaked for 20-25 minutes, plus 5 minutes per inch of thickness, and then oil-quenched to harden it.

Chemical Composition:
Carbon, C 1.90 2.20
Manganese, Mn 0.15 0.45
Silicon,Si 0.10 0.40
Molybdenum, Mo -- --
Chromium,Cr 11.00 12.00
W -- --
V -- --
Co -- --


The mechanical properties of D3 steels are tabulated below:

Izod impact unnotched 28.0 J 20.7 ft-lb
Poisson's ratio 0.27-0.30 0.27-0.30
Elastic modulus 190-210 GPa 27557-30457 ksi

The following table shows the thermal properties of D3 steels:


T (°C) Treatment
Thermal expansion 12 x 10 -6 /ºC 20-100 -

Then the material should be removed and air cooled:
Tempering °C150200250300350400
HRC 64/63 63/61 62/60 61/60 60/59 59/58
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Saket Khaitan (Partner)
Khaitan Steel Forgings
Ajod Dairy Road, Opposite Gravity House, Near Keval Kanta, Gujarat Bottling, Rakhial
Amraiwadi, Ahmedabad - 380023, Gujarat, India

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