High Edge Ductility Steel
Docol 420 high edge ductile steel is the next generation of hot-rolled high-strength low-alloy steel with better local formability, resulting in higher edge ductility and better edge trimming quality.
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Docol HE is a new range of hot-rolled advanced high-strength steels with greatly improved edge ductility for automotive manufacturers facing production technology challenges. It has a variety of advantages including improved edge ductility, local formability, and substantial increases in shear edge quality and hole expansion ratio. Docol 420 high edge ductile steel is produced using a new and tightly controlled method. It has a very fine gold phase structure and is an extremely pure steel that greatly improves local formability while still maintaining good overall formability.
It is suitable for stamping most geometric shapes and performs well in applications where trimming quality affects forming feasibility. Lastly, the steel can well adapt to the requirements of mold adjustment and wear resistance, so it is suitable for precision blanking.
Mechanical Properties
Yield Strength Rp0.2 (MPa) |
Tensile Strength Rm (MPa) |
Extension Rate A80( min%) |
Extension Rate A5( min%) |
Reaming (% typical) |
90 ° Bend the Most Small Bend Inner Diameter |
420 |
480-600 |
18 |
22 |
90 |
0.0xt |
Chemical Composition
C (max %) |
Si (max %) |
Mn (max %) |
P (max %) |
S (max %) |
Everything ( %) |
Nb (max %) |
V (max%) |
Ti (max %) |
0.10 |
0.03 |
1.50 |
0.025 |
0.010 |
0.015 |
0.09 |
0.20 |
0.15 |
In general, our online service time is Beijing time: 8:00-22:00, after 22:00, we will reply to your inquiry during the next working day.
The inner layer has a waterproof paper outer layer with iron packaging and is fixed with a fumigation wooden pallet. It can effectively protect products from corrosion during ocean transportation.
Of course, we can send samples to all parts of the world, our samples are free, but customers need to bear the courier costs.
You need to provide the grade, width, thickness, coating and the number of tons you need to purchase.
Under normal circumstances, we ship from Shanghai, Tianjin, Qingdao, Ningbo ports, you can choose other ports according to your needs.
Prices vary from period to period due to cyclical changes in the price of raw materials.
We have ISO 9001, SGS, EWC and other certifications.
In general, our delivery time is within 30-45 days, and may be delayed if the demand is extremely large or special circumstances occur.