DC03 steel coil is a drawing-quality cold rolled low-carbon steel grade specified under EN 10130 (Steel Number: 1.0347). With balanced strength, excellent ductility, and stable surface quality, DC03 has become a preferred material for automotive deep drawing and complex home appliance forming applications.
Compared with DC01, DC03 offers improved elongation and forming stability, while remaining more cost-effective than deep drawing grades such as DC04. This makes DC03 an ideal choice for manufacturers seeking high forming reliability with optimized material cost.
Why DC03 Is Ideal for Automotive Deep Drawing Applications
In the automotive industry, deep drawing processes demand steel with consistent plastic deformation capability, resistance to cracking, and uniform mechanical behavior.
Key Advantages of DC03 for Automotive Use
Low carbon content for enhanced ductility
Stable yield strength, reducing springback
Uniform grain structure after annealing
Good surface quality for painting and coating
Typical Automotive Applications
DC03 steel coils are widely used in:
Automotive interior panels
Seat structural components
Dashboard frames
Non-exterior stamped parts
Reinforcement brackets and housings
For medium-depth drawing operations, DC03 provides sufficient formability without the higher cost associated with DC04 or DC05 grades.
Chemical composition % of steel DC03 (1.0347): EN 10130-2006
| Unless otherwise agreed at the time of enquery and order, this grade may be supplied as alloy steel (for example with boron or titanium) |
| C | Mn | P | S |
| max 0.1 | max 0.45 | max 0.035 | max 0.035 |
Mechanical properties of steel DC03 (1.0347)
| Rm - Tensile strength (MPa) | 270-370 |
| ReH - Minimum yield strength (MPa) | 240 |
| A - Min. elongation Lo = 80 mm (%) | 34 |
| A - Min. elongation Lo = 5,65 √ So (%) (+A) | 37 |
| Vickers hardness ( HV): (+A) | 100 |
DC03 vs DC01 in Automotive Stamping
| Feature | DC01 | DC03 |
|---|---|---|
| Drawing performance | Limited | Improved |
| Crack resistance | Moderate | High |
| Process stability | Average | Excellent |
| Scrap rate | Higher | Lower |
In many automotive stamping lines, DC03 significantly reduces edge cracking and material failure, improving production efficiency and yield.
DC03 vs DC04: Choosing the Right Grade
| Requirement | DC03 | DC04 |
|---|---|---|
| Drawing depth | Medium | Deep |
| Forming complexity | Moderate | High |
| Cost efficiency | Higher | Lower |
| Typical use | Appliance & interior auto parts | Body panels |
DC03 is often selected when DC04 performance is unnecessary, helping manufacturers control material costs without sacrificing forming reliability.
GNEE STEEL – Reliable DC03 Steel Coil Supplier
Established in 2008, GNEE STEEL supplies DC03 cold rolled steel coils tailored for automotive and home appliance manufacturers worldwide.
Supply Capabilities
Thickness: 0.3 – 3.0 mm
Width: up to 1500 mm
Coil & cut-to-length sheet
EN 10204 3.1 Mill Test Certificates
Our Advantages
Stable mills & strict quality control
Competitive export pricing
OEM & ODM customization
Technical support for forming processes
Corporate philosophy:
"Make progress a little every day."
Conclusion
DC03 steel coil plays a critical role in automotive deep drawing and home appliance complex forming by offering reliable ductility, consistent mechanical properties, and excellent surface quality. It is a cost-effective solution for manufacturers requiring stable forming performance without over-specifying material grades.
📩 Contact GNEE STEEL today to discuss your DC03 steel coil requirements and receive customized material solutions.
What is the difference between DC01 and DC04 steel?
DC04 and DC01 are both cold-rolled, unalloyed quality steels that are used for various industrial applications. While DC01 serves as the standard grade for general cold forming processes, DC04 is characterized by improved deep-drawing properties and higher ductility.
Is DC01 the same as CR4?
Cold Reduced steel
Here at GNEE Steel, we stock and process DC01 mild steel (often referred to as CR4), in varying thicknesses from 0.9mm up to 3mm. Each sheet is de-coiled and flattened to strict tolerances in our works, ensuring consistent quality and flatness, every time.
What does DC01 mean?
DC01 represents the basic grade of the DC steel family and is also known under the former designations St12 or FeP01. This grade can be used for simple forming operations such as bending, coining, beading and drawing.
What is the difference between DC01 and DC03?
DC01 – This grade can be used for simple forming work, e.g. bending, embossing, beading and drawing. DC03 – This grade is suitable for forming requirements such as deep drawing and difficult profiling.
What is DC01 steel equivalent to?
Material 1.0330, DC01 steel equivalent to ASTM, ISO, European (German DIN, British BSI, France NF), Japanese JIS and Chinese GB standard (for reference). Note: DIN 1623 has been replaced by DIN EN 10130, and the designation ST12 has been replaced by DC01.
What is the thickness of DC01 material?
Galvanized Steel Sheet - Grade Dc01, Thickness 0.2-3.50mm, Width 914-1250mm | Cold Rolled, Durable Zinc Coating, Long Lasting Toughness.
Is cold-rolled steel better than hot rolled steel?
Cold rolling produces steel with closer dimensional tolerances and a wider range of surface finishes than hot rolling. It is also up to 20% stronger than hot rolled through the use of strength hardening.