Cold Rolled Steel
When facing a wide variety of cold rolled steel grades, the difference between DC01, DC02, DC03, DC04, DC05, and DC06 is not always obvious to non-technical buyers. However, picking the correct material has a direct impact on production efficiency, stamping durability, coating performance and overall product quality. The classification is primarily based on deep drawing capacity, meaning the ability of the sheet to undergo pressure forming without cracking.
🔹 Deep Drawing Capability Ranking
| Grade | Drawing Level | Typical Use Case | Complexity |
|---|---|---|---|
| DC01 | Normal forming | Simple bends & brackets | ★ |
| DC02 | Improved drawing | Basic stamped appliance parts | ★★ |
| DC03 | High drawing | Moderate curve forming | ★★★ |
| DC04 | Very high drawing | Automotive visible panels | ★★★★ |
| DC05 | Extra deep drawing | Large stamped parts | ★★★★★ |
| DC06 | Super deep drawing | Most complex multi-curvature shapes & precision shells | ★★★★★★ |
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Why DC06 Stands Out in the DC Series
Although all grades in the DC series are suitable for forming, DC06 provides the highest safety margin and lowest cracking risk during stamping. Performance advantages include:
Lowest yield strength for smooth deformation
Highest elongation ratio for complex geometric shape formation
Superior paint adhesion due to uniform surface texture
Excellent fatigue resistance for long-term structural use
For industries requiring light-weighting without compromising strength, DC06 also supports significant sheet thickness reduction, contributing to energy-efficient production.
| Quality | Standard | Material No. |
|---|---|---|
| DC06 | DIN EN 10130 | 1.0873 |
| DC06+ZE | DIN EN 10152 | 1.0873 |
| DIN EN Standard | Testing direction | Yield Point Re (MPa) |
Tensil Strength Rm (MPa) |
Elongation A80 (in %) |
r90 | n90 |
|---|---|---|---|---|---|---|
| 10130 | Q | ≤ 170 | 270 – 330 | ≥ 41 | ≥ 2,1 | ≥ 0,220 |
| 10152 | Q | ≤ 180 | 270 – 350 | ≥ 41 | ≥ 2,1 | ≥ 0,210 |
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Industrial Applications Across the DC Series
DC01, DC02, DC03, DC04, DC05, DC06 grades are widely used in:
Automotive inner and outer panels
Fuel tanks and crash-resistant reinforcement plates
Refrigerator and washing machine shells
Electrical and digital metal housings
Precision industrial stamping components
Ventilation and HVAC housings
However, for high-risk structures or consumer-visible panels, manufacturers overwhelmingly prefer DC06 to minimize defect rates and improve finish quality.
For buyers who are unsure about which grade is the most suitable, GNEE STEEL's technical team can offer free material selection support based on drawings, stamping depth ratio and coating requirements.
