Khaitan Steel Forgings
Khaitan Steel Forgings
Amraiwadi, Ahmedabad, Gujarat
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High Carbon High Chromium Steel Bars

Pioneers in the industry, we offer d3 hchcr steel round bar from India.

D3 HCHCR Steel Round Bar

D3 HCHCR Steel Round Bar
  • D3 HCHCR Steel Round Bar
  • D3 HCHCR Steel Round Bar
  • D3 HCHCR Steel Round Bar
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Approx. Price: Rs 130 / KgGet Latest Price

Product Details:

Diameter2-5 inch
Length3-6 meter

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

  • 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.
  • Then the material should be removed and air cooled.

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.
  • Tempering 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.

  • 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, C1.902.20
Manganese, Mn0.150.45
Molybdenum, Mo----

The following table shows the thermal properties of D3 steels:

T (°C)
Thermal expansion 12 x 10-6/ºC20-100-

Physical properties of D3 tool steels are given below:

Physical propertiesMetricImperial
Density7.7 x 1000 kg/m30.278 lb/in3
Melting point1421°C2590°F

The mechanical properties of D3 steels are tabulated below:

Izod impact unnotched28.0 J20.7 ft-lb
Poisson's ratio0.27-0.300.27-0.30
Elastic modulus190-210 GPa27557-30457 ksi

Tempering for 1 hour per inch of thickness is required:
Tempering °C150200250300350400
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Khaitan Steel Forgings
Ajod Dairy Road, Opposite Gravity House, Near Keval Kanta, Gujarat Bottling, Rakhial
Amraiwadi, Ahmedabad - 380023, Gujarat, India
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