DB6 Steel is available in round and flat form.
Forgings dies
Punches and dies
apathetic forming tools
coining dies
trimmer dies
spindle
extruding stamps
cutting,pressing
press tools
hot shear knives
die holders
support tools
tool holders
pressure plates
armoured die plates
Dies for Mechanical Presses
Die Molds
Shoe Blocks
Piston Rods
plastic molds
| C | Si | Mn | P | S | Cr | Mo | Ni | V |
| 0.5 – 0.6 |
0.1 – 0.4 |
0.6 – 0.9 |
0 – 0.03 |
0 – 0.03 |
0.8 – 1.2 |
0.35 – 0.55 |
1.5 – 1.8 |
0.05 – 0.15 |
Coefficient of thermal expansionat °C) 20-100 20-200 20-300 20 -400 20-500 20-600
10-6 m/(m*K) 12.1 13.1 13.2 13.5 14.1 14.3
Thermal Conductivity °C 20 20 350 350 700 700
W/(m*K) 35 35 39 39 36 36
| Soft annealing °C | Cooling | Hardness HB |
| 650-710 | Furnace | max. 240 |
| Hardening °C | Quenching | Hardness after quenching HRC |
| 840-880 | Oil | 57 |
| 860-900 | Air | 55 |
| tempering °C after quenching | 100 | 200 | 300 | 400 | 450 | 500 | 550 | 600 | 650 |
| HRC in oil | 56 | 54 | 52 | 49 | 47 | 46 | 43 | 38 | 34 |
| HRC in air | 54 | 52 | 50 | 47 | 45 | 43 | 40 | 36 | 32 |
DB6 Steel must be preheated slowly to 700°C and then increase temperature rapidly to 1050°C.It shouldnot be forged below 800°C. Slow cooling after forging is needed, either in a furnace or in the vermiculite.
Annealing is done by soaking the component thoroughly at 740-760°C before furnace cooling, at a rate of 10°C / hour decreasing the temperature to 600°C and then cooled in air.
In order to minimise distortion or cracking during the heat treatment,stress relieving is advised ,specially when heavy machining is to be carried out. This procedure must be done after rough machining. DB6 component to be heated carefully to 600-650°C, with good soaking time (2 hours/ 25mm of section) and then cooled in the furnace to 500°C and then freely in the air. Before the hardening process,tool component must be finish machined.
DB6 is preheated to 600-700°C.Then it is soaked thoroughly and the temperature is increased rapidly to hardening temperature ( 850-880°C).The component is either air quenched or oil quenched. Tempering of the tool should be done as they become hand-warm.
Uniform heating to be done to the required temperature with soaking time of 2 hours / 25mm of section. Let it cool in air after withdrawing from the furnace. Second tempering is recommended. H13 tool is allowed to cool at room temperature between the tempers.
TEMPERATURE°C HARDNESS(HRC)
200 55
250 54
300 53
400 49
500 45
| Temperature | Time Approx depth of case |
| 525°C | 20 hours 0.25mm |
| 525°C | 30 hours 0.3mm |
| 525°C | 60 hours 0.4mm |
This procedure will vary according to the shape and size of DB6 tool component. Rate of heating, rate of cooling , soaking time also will differ for due to shape and size of the tool. Other factors like type of furnace,medium for quenching etc also matter.
Wet grinding is preferred using a good supply of coolant. Using a very soft wheel ,if dry grinding is to be resorted.
With our material,we provide mill test certificate and ultrasonic Ok certificate (Note: Provide only if mentioned before placing the order).
