Introduction
D-3 is a 12 % ledeburitic chromium tool steel with great wears resistance. It is used in cutting tools, trimming dies, blanking dies for paper and plastics & more. Partnering with a reputable D3 steel supplier ensures access to high-quality materials that meet the demands of various industrial processes, making it essential for manufacturers to choose a trusted source.
Steel Properties : Ledeburitic-high-carbon high-chromium tool steel, very high wear-resistance. A reliable D3 steel supplier can provide detailed specifications and guidance on selecting the right grade for specific applications.
Applications : Tools for cutting sheets up to 4mm thickness, trimming dies, blanking dies for paper and plastics, long- and round-section shear blades for sheet thicknesses up to 2 mm, drawing and deep drawing tools. Woodworking tools, stone pressing tools, pressure pads and highly wear-resistant plastic moulds, profile rolls.
Chemical Composition : (%)
| C | Si | Mn | Cr |
|---|---|---|---|
| 1.90-2.20 | 0.10-0.40 | 0.15-0.45 | 11.00-12.00 |
| Mo | W | V | P | S |
|---|---|---|---|---|
| -- | - | 0.20-0.20 | ≤0.030 | ≤0.030 |
Grades Equivalent :
| STANDARD | BRAZIL | AUSTRIA | SWEDEN |
|---|---|---|---|
| 1.2080 | -- | K100 | -- |
| EN | SLOVANIA | ITALY | JIS |
|---|---|---|---|
| X210Cr12 | OCR12VM | -- | SKD1 |
| S.KOREA | CZECH REP. | CHINA | AMERICA |
|---|---|---|---|
| -- | 2002 | Cr12 | D-3 |
Production Process :
Round Bar :

Flat Bar :
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| UT Standard : | Reduction Ratio : | Delivery Status : |
| SEP 1921, (DEC.84)E/e | As 1:4 or 1:5 | in annealed condition. |
Sizes of Round Bars :
| Cold Drawn/Centreless Ground Bar | Hot Rolled & Annealed Peeled | Forged Annealed Turned |
| Φ 2.0 - 14.4mm | Φ 14.5 - 80.0mm | Φ 81.0 - 610.0mm |
Sizes of Flat Bars :
| Thickness | Width |
| 5mm - 150mm | 5mm - 810mm |
Sizes of Sheets :
| Thickness | Width | Length |
| 0.5mm - 12mm | 810mm | 2500mm |
Heat Treatments :
| Soft annealing °C | Cooling | Hardness HB |
| 800 - 840 | Furnace | max. 250 |
| Hardening form °C | in | Hardness after quenching HRC |
| 930-960 950-980 | oil, hot bath 500-500 °C air (up to 30 mm thickness) | 64 |
| Tempering°C | 100°C | 200°C | 300°C |
| HRC | 63 | 62 | 59 |
| 400°C | 500°C | 550°C | 600°C |
| 57 | 54 | 54 | 36 |