Hot Forged / Rolled Tool Steel Round Bar D3 / Cr12 / DIN1.2080 / SKD1 Steel Grade

D3/Cr12/DIN1.2080/SKD1 Cold Work Tool Steel Round Bar, Small MOQ, tool steel

Applications: High performance cutting tools for sheet upto 4mm Thickness, trimming dies, blanking

dies for paper and plastic,shear blades for cutting light gauge material, thread rolling dies , drawing, deep drawing, Pressure pads and highly wear-resistant plastic moulds.

Steel Grade:
GB Cr12

DIN-1.2080

Similar grade:AISI-D3,JIS-SKD1, DIN 1.2080

Delivery Condition:

Size available:

Flat:15-150mmx80-1200mm Square: 12mm-450mm, hot rolled: 10-100mm, hot forged: 80-800mm

Surface: Black/Turned

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.

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. Then the material should be removed and air cooled.

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. Tempering for 1 hour per inch of thickness is required.

Hardening

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.

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