DB6, also known as DIN 1.2714, is a hot work tool steel with excellent toughness, wear resistance, and high hardness. It is particularly well-suited for applications involving high temperatures and mechanical stress, such as forging dies, extrusion dies, and die casting. This nickel hot work tool steel produced by Toolman has good hardenability, wear resistance, thermal fatigue resistance, and thermal stress resistance, good strength at high temperatures, and good tempering resistance.
Steel Properties
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Good hardenability
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Extreme high temperature strength
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Uniform hardness over sections also at big dimensions.
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Resistance under impact loadings.
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Good strength and toughness
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Good tempering resistance and dimensional stability.
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Tools can be water or air cooled.
Chemical Composition
| Element | C (%) | Si (%) | Mn (%) | P (≤ %) | S (≤ %) | Cr (%) | Mo (%) | V (%) | Ni |
|---|---|---|---|---|---|---|---|---|---|
| Composition | 0.50-0.60 | 0.10-0.40 | 0.65-0.95 | 0.03 | 0.03 | 1.00-1.20 | 0.45-0.55 | 0.07-0.12 | 1.60-1.80 |
Mechanical Properties
| Property | Value |
|---|---|
| Hardness (HBW) | 248 max (Annealed) |
| Hardness After Quenching (hardenability) (HRC) | 44 min (Annealed) |
| Tensile Strength | 1000-1400 MPa |
| Yield Strength | 1045 MPa |
| Elongation | 15-20% |
| Impact Toughness | 20-25 J/cm² |
Physical Properties
| Property | Value |
|---|---|
| Density (g/cm³) | 7.8 g/cm³ |
Modulus of Elasticity
| Condition | Value |
|---|---|
| At 500°C | 176 GPa |
| At 600°C | 165 GPa |
Thermal Properties
| Temperature (℃) | Thermal Expansion Coefficient (10^-6/℃) |
|---|---|
| 500 | 14 |
| 600 | 14.3 |
Thermal Conductivity
| Temperature (℃) | W/m•K |
|---|---|
| 500 | 36.8 |
| 600 | 36 |
Heat treatment
| Heat Treatment | Temperature | Duration | Cooling | Additional Details |
|---|---|---|---|---|
| Stress Relieving | Approx. 650 | 1 hour per 50 mm wall thickness | Furnace | |
| Soft Annealing | 700 | 1 hour per 25 mm wall thickness | Furnace | |
| Hardening | 880 | 1 minute per mm wall thickness | Water/Oil, Protective atmosphere/Oil, Oil, Hot bath, or Vacuum | Quenching hardness Max. 58 HRC |
| Tempering | See tempering curve | 1 hour per 25 mm wall thickness | Air | Working hardness 300–440 HB depending on application |
| Tempering °C | HRC |
|---|---|
| 100 | 51 |
| 200 | 50.5 |
| 300 | 50 |
| 400 | 50 |
| 500 | 53 |
| 550 | 51 |
| 600 | 48 |
| 650 | 41 |
| 700 | 29 |
Applications
- Forging tools, press and extrusion dies, tools for hot pressing and forging of steels and other metals. Moulds, mandrels, embossing tools, tool holders
- DB6 has super toughness often needed for tools such as : -
- Hobs
- Collets
- Punches
- Forming Rolls
- Blanking or forming dies
- Thread Roller Dies
- Embossing Dies
- Use it where hardening accuracy or cracking hazards make an oil hardening steel necessary such as : -
- Shear Blades
- Punches
- Stamps
- Swagging dies
- Slitting Shears
- Slitting Cutters
- For machine parts requiring great strength and toughness combined with with hardness and wear resistance it has been used for parts such as : -
- Clutch Parts
- Pawls
- Stops
- Knuckle Pins
- Clutch Pins
- Indexing Pins
- Fingers
- Spindles
Quality Assurance
Our DB6, / DIN 1.12714 , / AISI L6 steel undergoes rigorous testing and quality control to meet international standards, ensuring consistent performance and reliability. Certificates and test reports are available upon request. Feel free to reach out to us for more information on our DB6 steel products or to discuss your specific requirements. We're dedicated to providing top-quality steel solutions that meet your needs and exceed your expectations.
Manufacturing Range
| Products | Diameter (mm) |
|---|---|
| Hot Rolled bar | 8 - 65 |
| Forged and Turned bars | 65.2 - 500 |
| Forged Square Bars | 50 - 500 |
Flats
| THICKNESS | WIDTH |
|---|---|
| 6.00 mm - 410.00 mm | 20.00 mm - 700.00 mm |
Frequently Asked Questions
We manufacture DB6, also known as DIN 1.2714 / AISI L6, as a nickel-alloyed hot work tool steel offering excellent toughness, wear resistance and high hardness. Its combination of hardenability, thermal-fatigue resistance, thermal-stress resistance and high-temperature strength makes it suitable for tools exposed to both heat and severe mechanical loading.
We supply DB6 for forging tools, press and extrusion dies, hot-pressing tools, moulds, mandrels, embossing tools and tool holders. We also list hobs, collets, punches, forming rolls, blanking or forming dies, thread-roller dies, shear blades, stamps, swagging dies, slitting shears and slitting cutters among its applications.
Our DB6 steel has a maximum annealed hardness of 248 HBW and a minimum hardness after quenching of 44 HRC. We also publish tensile strength of 1,000–1,400 MPa, yield strength of 1,045 MPa, elongation of 15–20% and impact toughness of 20–25 J/cm².
We specify stress relieving at approximately 650°C, soft annealing at 700°C, and hardening at 880°C. Depending on the selected hardening route, quenching can be carried out using water/oil, protective atmosphere/oil, oil, a hot bath or vacuum. Our published maximum quenching hardness is 58 HRC, with working hardness generally specified at 300–440 HB, depending on the application.
Our DB6 composition contains 0.50–0.60% carbon, 0.10–0.40% silicon, 0.65–0.95% manganese, 1.00–1.20% chromium, 0.45–0.55% molybdenum, 0.07–0.12% vanadium and 1.60–1.80% nickel, with phosphorus and sulphur limited to 0.03% each.
We manufacture hot-rolled DB6 bars from 8–65 mm diameter, forged and turned bars from 65.2–500 mm, and forged square bars from 50–500 mm. Our flat range extends from 6–410 mm thickness and 20–700 mm width.
Yes. We subject our DB6 / DIN 1.2714 / AISI L6 steel to rigorous testing and quality control and provide certificates and test reports on request. Manufacturers can also share their required grade, size, quantity and application details with us before ordering.
