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Introduction
DB6 (1.2714 steel ) is highly recommendable for Close Die Forgings due to its characteristics of high wear-resistance, extra toughness , high hardness which is achieved with Cr-Ni-Mo-V high graded alloys. The equivalent grade DB6 / L6 / SKT4 normally used as a pre-hardened condition. The standard hardness is 360 to 430 BHN. DIN 2714 is the upgraded version of DIN 2713 for better performance of dies. We are a premier 1.2714 steel supplier, offering durable and high-quality steel for your industrial requirements.
Characteristics : Classic die steel like grade 2713, but with better tempering properties and better through-hardening properties to a reference diameter of 450mm. For larger dimensions we recommend grade 2714 ISO-B MOD or hardening and tempering after contour roughing. For hardness up to 440 HB (approx. 1500 MPa).
Applications : Large press dies for forming aluminium, forging dies for large quantities regardless of die size and shape of cut, die and mould holders, tool holders and cold forging die holders, tool cassettes. Hydroforming moulds (IHU).
Chemical Composition : (%)
| C | Si | Mn | Cr |
| 0.50-0.65 | 0.10-0.40 | 0.65-0.95 | 1.00-1.20 |
| Mo | Ni | V | P | S |
| 0.45-0.55 | 1.60-1.80 | 0.07-0.15 | MAX 0.025 | MAX 0.005 |
Grades Equivalent :
STANDARD |
BRAZIL |
AUSTRIA |
EN |
1.2714 |
VMO |
W500 |
56NiCrMoV7 |
SLOVANIA |
ITALY |
JIS |
S.KOREA |
UTOP EX2 |
ESKY0S2 731 |
SKT4 |
-- |
TAIWAN |
CZECH REP. |
CHINA |
AMERICA |
GMKT4 |
TBN
EX1 |
YTR6A |
L6 |
Physical Properties (reference value)
| Thermal expansion coefficient (10-6/K) | ||
| 20-100° C | 12.2 | 20-250° C | 13.1 | 20-500° C | 14.2 |
| Thermal conductivity (W/mK) | ||
| 20° C | 36.0 | 250° C | 37.5 | 500° C | 34.5 |
| Young’s modulus (GPa) | ||
| 20° C | 215 | 250° C | 198 | 500° C | 175 |
High-temperature yield strength
| Quenched and tempered state | 0.2% yield strength in MPa at temperature | |||
| 450°C | 500°C | 550°C | 600°C | |
| ~ 1570 MPa | 900 | 740 | 460 | 220 |
| ~ 1370 MPa | 810 | 590 | 390 | 200 |
| ~ 1180 MPa | 610 | 460 | 280 | 150 |
Production Process :
Rounds :
102 , 112 , 122, 132 , 142 , 152, 162, 172, 182, 202, 212, 222, 232, 242 , 252, 262 ,272, 282 , 302, 322, 330, 342, 352, 382, 392, 402 , 412, 435 , 452, 482, 512 , 532 , 603 , 653
Flat Bar :
EAF → LF → VD → HOT FORGED → ANNEALED → OIL QUENCH & TEMPERED →
2 TIMES TEMPERED →
6 SIDES MACHINED (Blocks) → TURNED BRIGHT (Rounds)
| Ultrasonic Test : | Cleanliness Standard : | Reduction Ratio : |
| OK According to SEP 1921, (DEC.84) D/d | ASTM E-45-METHOD A | Min. 4/5 : 1 |
| Grain Size ACC to ASTM E112 : | Delivery Status : |
| 6 AND FINER | In Quench & Tempered Condition |
Heat Treatment :
Stress relieving |
Soft annealing |
Temperature : Approx. 650° C in the annealed state Duration : 1 hour per 50mm wall thickness Cooling : furnace |
Temperature : 700 ° C Duration : 1 hour per 25 mm wall thickness Cooling : furnace |
Hardening |
Quenching hardness |
Temperature : 880° C Duration : 1 minute per mm wall thickness |
Max. 58 HRC : in water/oil, protective atmosphere/oil, oil, hot bath or vacuum |
Tempering |
Working hardness |
Temperature : See tempering curve Duration : 1 hour per 25mm wall thickness Cooling : Air |
300-440 HB depending on application |
Note: Pre-heating of the tools to 250-280 C is recommended.
Width |
210 |
260 |
310 |
360 |
410 |
460 |
510 |
560 |
610 |
660 |
710 |
810 |
1010 |
1500 |
Thickness |
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210 |
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260 |
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310 |
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360 |
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410 |
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460 |
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510 |
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+91-22-68520000
Email us
kushal@kushalmetal.net