The Spectrum of Cold-Rolled Grades
Cold-rolled low-carbon steel sheets come in a variety of grades, each optimized for different forming and application needs. From the basic forming grade DC01 to the ultra deep-drawing grade DC07, each offers a trade-off among strength, ductility, surface finish, and cost. Understanding these trade-offs helps engineers and manufacturers select the best grade - and ensure efficient production and high-quality end products.
GNEE STEEL provides a clear comparison of grades DC01 through DC07, highlighting the strengths and ideal use cases for each - and why DC07 often becomes the go-to choice when complex forming and high elongation are required.
Mechanical & Formability Comparison: DC01 DC03 DC04 DC05 DC06 DC07
| Grade | Yield Strength (MPa, max) | Tensile Strength (MPa) | Elongation (%) | Formability / Deformation Capacity | Typical Use Case |
|---|---|---|---|---|---|
| DC01 | ≤ 280 | 270–410 | ≥ 28 | Basic forming, low deformation | Simple bended/welded parts, structural panels |
| DC03 | ≤ 240 | 270–370 | ≥ 34 | Moderate forming | Stamped components, bent parts |
| DC04 | ≤ 210 | 270–350 | ≥ 38 | Good drawability | Appliance panels, moderate drawing |
| DC05 | ≤ 180 | 270–330 | ≥ 40 | Better drawability | Light shells, moderate deep drawing |
| DC06 | ≤ 170 | 270–330 | ≥ 41 | High drawability | Shells, furniture parts, enclosures |
| DC07 | ≤ 150 | 250–310 | ≥ 44 | Ultra deep-drawing, extreme forming | Complex drawn parts, automotive shells, thin-wall enclosures |
Analysis - When to Use Which Grade
DC01 / DC03: Suitable for basic forming or simple bending/welding, where minimal deformation is required. Best when strength is prioritized over formability.
DC04 / DC05: Good balance between formability and strength. Useful for moderate stamping, drawing, or light gauge shells.
DC06: High formability with reasonable strength - ideal for medium-complexity parts with moderate deformation.
DC07: Best choice when parts demand extreme deformation, deep drawing, stretch forming, or thin-wall precision shells. Its low yield strength, high elongation and uniform sheet make it uniquely suited for complex shapes.
Why DC07 Offers the Best Value for High-Deformation Applications
- Reduced Material Stress & Spring-back: Low yield strength lowers the risk of cracking and reduces spring-back - improving dimensional accuracy after forming.
- Improved Sheet Utilization and Lower Scrap Rate: High ductility minimizes wrinkling or tearing during deep drawing, yielding better material utilization.
- Superior Surface Quality for Final Finishing: Cold-rolled DC07 has a clean, uniform surface - advantageous for painting, coating, or visible parts without additional surface prep.
- Better Performance for Thin-Gauge Shells & Enclosures: Many modern applications call for thin, precise shells - appliances, electronics housings, lightweight automotive components - and DC07 meets these needs without compromising formability.
Why Choose GNEE STEEL for Your DC07 Needs
GNEE STEEL offers DC07 cold-rolled sheets in a variety of gauges and widths, with reliable EN 10130 compliance. We guarantee:
- Stable chemical composition and mechanical properties across batches
- Tight thickness tolerance and flatness
- Smooth surface suitable for coating or painting
- Flexible coil or cut-to-length delivery formats
If your project demands the highest formability, precision and finish - request a quote from GNEE STEEL. Our DC07 line is engineered to meet the most demanding deep-drawing and stamping requirements.
