Die Steel Bars and Sheets

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We are offering D3 Die Steel Round Bar to our clients. 

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We are offering Die Steel Round Bar to our clients. 

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We are offering OHNS Die Steel Round Bar to our clients. 

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We have marked a dynamic position in the market by providing the finest quality range of D2 Die Steel Round Bar.

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High Carbon High Chromium Die Steel (HCHCR), Thread rolling dies, Hobs, Cold extrusion tools and dies, Punches, Draw plates and dies, Cutters, Measuring tools, Pressure casting moulds, Blanking, Reamer, Finishing rolls for tyre mills. This type of steel has high dimensional stability with added wear resistance coupled with excellent edge holding qualities. Cold-work tool steels include the high-carbon, high-chromium steels or group D steels. These steels are designated as group D steels and consist of D2, D3, D4, D5, and D7 steels. These steels contain 1.5 to 2.35% of carbon and 12% of chromium. Except type D3 steel, all the other group D steels include 1% Mo and are air hardened. Type D3 steel is oil-quenched; though small sections can be gas quenched after austenitization using vacuum. This makes tools made with type D3 steel brittle during hardening. Type D2 steel is the most commonly used steel among the group D steels.

The other designations of D5 tool steels are:

• ASTM A681
• FED QQ-T-570
• SAE J437
• SAE J438
• UNS T30405

Heat Treatment:

• D5 steels should be preheated very slowly up to 815°C (1500°F), then temperature should be increased to 1009°C (1850°F) and held for 20 to 45 minutes.
• Then they are air quenched.

Forging:

• Forging of D5 steels can be done at 1065°C (1950°F) down to 1750°F
• Do not forge below 926°C (1700°F).

Annealing:

• Annealing of D5 steels should be done at 886°C (1627°F) followed by slow furnace cooling at 4°C (40°F) per hour or less.

Tempering:

• D5 steels can be tempered at 204°C (400°F) for achieving Rockwell C hardness of 61 and at 537°C (1000°F) for a Rockwell C hardness of 54.

 

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