DC03 cold rolled steel
What Is 1.0347?
1.0347 is the official European material number assigned to DC03 cold rolled steel under the EN standard system. Unlike trade names or local grade designations, the material number provides a unified technical reference that defines the steel's chemical composition range, mechanical behavior, and delivery condition.
For international buyers, especially those involved in automotive, appliance, or industrial manufacturing, using the material number 1.0347 helps eliminate confusion when sourcing cold rolled steel across different markets. It ensures that the supplied material meets consistent European technical requirements regardless of origin.
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What Is DC03 Cold Rolled Steel?
DC03 is a low-carbon cold rolled steel grade specified in EN 10130, positioned between basic commercial-quality steels and deep-drawing grades. Compared with DC01, DC03 offers improved ductility and forming stability, while remaining more cost-effective and easier to process than higher-grade deep drawing steels such as DC05.
DC03 is particularly valued for applications that require:
- Reliable bending performance
- Moderate to improved drawing capability
- Stable surface quality
- Consistent mechanical properties across coils
These characteristics make DC03 one of the most widely used cold rolled steel grades in global manufacturing.
What Is Cold Rolled Steel?
Cold Rolled Steel is produced by further processing hot rolled steel at room temperature. After hot rolling, the steel undergoes pickling to remove surface scale, followed by cold reduction rolling to achieve the required thickness and surface finish. The material is then annealed to restore ductility and skin-passed to improve flatness and surface appearance.
Compared with hot rolled steel, cold rolled steel offers:
Tighter thickness tolerances
Smoother and cleaner surface
Improved dimensional accuracy
More uniform mechanical properties
These advantages make cold rolled steel essential for precision components and visually exposed parts.
DC03 | 1.0347 Standard Specifications
| Item | Description |
|---|---|
| Standard | EN 10130 |
| Steel Grade | DC03 |
| Material Number | 1.0347 |
| Thickness Range | 0.3 – 3.0 mm |
| Width Range | Up to 1600 mm |
| Surface Condition | Oiled or dry |
| Delivery State | Annealed and skin-passed |
DC03 can be supplied in coils or cut-to-length sheets depending on production requirements.
Mechanical Properties of DC03
| Property | Typical Value |
|---|---|
| Yield Strength | ≤ 240 MPa |
| Tensile Strength | 270 – 370 MPa |
| Elongation (A80) | ≥ 28% |
The relatively low yield strength combined with good elongation allows DC03 to deform smoothly during forming without sudden cracking or excessive springback. This makes it suitable for stamping, bending, and moderate drawing operations.
Forming Performance and Processing Behavior
DC03 cold rolled steel performs well in:
Press forming
Roll forming
Light to medium-depth drawing
Bending with small radii
Its balanced mechanical properties reduce tool wear and improve process stability, especially in continuous production lines. DC03 also offers good weldability, making it suitable for assemblies requiring spot welding or seam welding.
DC03 vs DC05: Key Performance Differences
| Aspect | DC03 | DC05 |
|---|---|---|
| Drawing Capability | Good | Excellent |
| Elongation | High | Very high |
| Carbon Content | Low | Lower |
| Cost Level | Moderate | Higher |
| Application Complexity | Medium | Very complex deep drawing |
DC05 is specifically designed for severe deep drawing operations, such as complex automotive panels with extreme deformation requirements. However, this higher formability also comes with higher material cost and stricter processing control.
For many manufacturers, DC03 offers the best balance between formability, cost efficiency, and production stability, making it a preferred choice for large-volume industrial components.
Typical Applications of DC03 | 1.0347 Cold Rolled Steel
DC03 is widely used across multiple industries, including:
Automotive interior and structural components
Electrical cabinets and enclosures
Household appliance housings
Office furniture and storage systems
General industrial stampings
Its stable surface quality also makes DC03 suitable for subsequent coating processes such as painting, powder coating, and galvanizing.
Surface Quality and Appearance
Thanks to the cold rolling and skin-pass process, DC03 offers a smooth and uniform surface that meets the requirements of visible components. The steel can be supplied with controlled surface roughness to enhance paint adhesion or further surface treatment performance.
This makes DC03 especially suitable for products where both mechanical performance and appearance matter.
Why Choose GNEE Steel for DC03 Cold Rolled Steel?
GNEE Steel supplies a full range of EN 10130 cold rolled steel grades, including DC01, DC03, DC04, and DC05, to meet different forming and application requirements. Each batch of DC03 cold rolled steel is produced under strict quality control to ensure consistent mechanical properties, stable surface condition, and reliable processing performance.
With extensive export experience, GNEE Steel supports:
Customized sizes and tolerances
Stable supply for long-term projects
Export-standard packaging
Complete inspection documentation
If you are looking for DC03 | 1.0347 cold rolled steel with dependable quality and professional service, GNEE Steel is ready to support your project.
📩 Send your inquiry today to receive detailed technical information, test certificates, and a competitive quotation tailored to your needs.