
D3 Tool Steel
D3 tool steel is an air hardening, high-carbon, high-chromium steel. D3, also know as 1.2080 (Werkstoff), displays excellent resistance to abrasion and wear. D3 has good dimensional stability and high compressive strength.
D3 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.
Typical applications for D3 Steel: Blanking and forming dies, Forming rolls, Press tools, Punches, Bushes
Typical chemical composition of 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, allow to soak thoroughly. 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 yield 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, then raise the temperature 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 |
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Tempering °C |
150 |
200 |
250 |
300 |
350 |
400 |
HRC |
64/63 |
63/61 |
62/60 |
61/60 |
60/59 |
59/58 |
D3 tool steel can be supplied from stock in flats and squares, hot rolled rounds, bright drawn rounds in imperial and metric sizes.