D3 Tool Steel Properties
D3 steel, also know as 1.2080 (Werkstoff), is an air hardening, high-carbon, high-chromium tool steel. It displays excellent abrasion/wear resistance and has good dimensional stability and high compressive strength.
It is heat treatable and will offer a hardness in the range 58-64 HRC. Due to its abrasion resistance in the hardened condition, D3 machining should be limited to finished grinding.
If you need better machinability then consider A2 tool steel which has a chromium content of 5% and is more readily machinable.
Typical applications for D3 Steel:
- Blanking and forming dies
- Forming rolls
- Press tools
- Punches
- Bushes
Typical chemical composition of AISI D3 tool Steel |
||||
|---|---|---|---|---|
| C | SI | Cr | Mn | Ni |
| 2.10% | 0.30% | 11.50% | 0.40% | 0.31% |
Annealing:
Heat uniformly to 850-870°C, soak thoroughly, then slow furnace cool at a rate of not more than 25°C per hour to 650°C. The parts may then be air cooled. This should result in a maximum hardness of brinell 248.
Hardening:
D3 tool steel is extremely sensitive to overheating during hardening – do not overheat.
Pre heat slowly to 800-850°C, the raise rapidly to 950-970°C and soak until completely equalised. Quench in oil.
Stress Relieving:
Heat to 650-700ºC. Soak for 2-4 hours then furnace cool.
Tempering:
Heat uniformly and thoroughly to the desired temperature and hold for 25 minutes per cm of thickness. D3 can be double tempered after intermediate cooling to room temperature.
Tempering D3 Steel |
||||||
|---|---|---|---|---|---|---|
Tempering °C |
150 |
200 |
250 |
300 |
350 |
400 |
HRC |
64/63 |
63/61 |
62/60 |
61/60 |
60/59 |
59/58 |
Disclaimer:
The information presented here are typical or average values and are not a guarantee of maximum or minimum values. Uses described are made only for the purpose of illustration to enable the reader to make their own evaluation and are not intended as warranties, either express or implied, of fitness for these or other purposes.
Tool Steel
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