cold-rolled DC07 and DC03
Cold rolled steel under EN 10130 is classified into various forming grades. DC03 is a mild deep-drawing steel suitable for moderate forming operations. DC07, however, is engineered as an ultra-deep-drawing material with significantly higher elongation and lower yield strength. Industries that produce components with strict formability requirements often compare DC03 vs DC07 when selecting materials.
Understanding the Role of DC07
DC07 is produced through very low carbon control, optimized annealing cycles, and precise thickness tolerances. These metallurgical adjustments make DC07 highly resistant to cracking during large deformation-an essential requirement for multi-stage forming.
DC07 | 1.0898: Mechanical properties (transverse)
| Yield strength1) Re MPa max. | Tensile strength Rm MPa | Elongation at fracture2) % min. A80 | Anisotropy r903)4) min. | Strain hardening exponent n903) min. |
| 150 | 250-310 | 44 | 2.5 | 0.230 |
DC07 | 1.0898: Chemical composition (heat analysis)
| Percentage by weight % max. | ||||
| C | P | S | Mn | Ti |
| 0.1 | 0.020 | 0.020 | 0.20 | 0.2 |
Comparison Table: DC03 and DC07
| Property | DC03 | DC07 |
|---|---|---|
| Standard | EN 10130 | EN 10130 |
| Steel Grade | Mild deep-drawing | Ultra-deep-drawing |
| Yield Strength | Moderate | Very low |
| Elongation | Good | Excellent |
| Formability | ★★★ | ★★★★★★ |
| Best Uses | Household appliances, medium drawing | Automotive interiors, complex housings |
Why DC07 Is Preferred for Advanced Manufacturing
- Higher Elongation for Complex Shapes
DC03 can support mild-to-moderate drawing, but DC07 provides the elongation needed for extreme forming depths.
- Less Earing and Distortion
DC07's microstructure improves anisotropy, resulting in smoother cup drawing and fewer defects.
- Enhanced Surface for Coating
Its surface precision benefits industries requiring high paint adhesion or tight cosmetic standards.
For customers seeking enhanced formability and optimized tooling performance, DC07 clearly surpasses DC03.
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