D3 Tool Steel Billet

Gnee Steel (Tianjin) Co., Ltd. is one of the most professional d3 tool steel billet manufacturers and suppliers in China. Welcome to wholesale customized d3 tool steel billet at competitive price from our factory. Good service and quality products are available.

 

D3 is a high-carbon, high-chromium, oil-hardening tool steel that is characterized by a relatively high attainable hardness and numerous, large, chromium-rich alloy carbides in the microstructure. These carbides provide good resistance to wear from sliding contact with other metals and abrasive materials. D3 is deep hardening and exhibits very high compressive strength with excellent stability in heat treatment, holding size almost as well as air-hardening, high-carbon, high-chromium die steels such as D2. It is ideal for tools requiring a combination of hardening accuracy and safety with maximum wear resistance and the greatest possible production.

 

Blanking and forming dies
Forming rolls
Press tools
Punches
Bushes

 

C	Mn	Si	Cr	V
2.15	0.40	0.40	12.25	0.25

 

Density: 0.284 lb/in³ (7870 kg/m³)

Specific Gravity: 7.87

Modulus of Elasticity: 30 x 10⁶ psi (207GPa)

Electrical Resistivity: 54.8 uOhm-cm at 70ºF (21ºC)

Machinability: 45-50% of a 1% carbon steel

 

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

 

 

 

 

We can guarantee the delivery time, if you have D3 Tool Steel Billet or other special steel products customized needs, please contact me.

 

 

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