DC06 vs DC05: DC06 is the ultimate formability — IF steel with r ≥ 2.1
DC06 vs DC05
Side-by-side chemical composition and mechanical property comparison.
Overview
DC06
1.0873
Interstitial-free (IF) cold-rolled steel — the absolute best formability of all automotive steels. Ultra-low carbon (<0.02%) with Ti/Nb microalloying to scavenge interstitial C and N. r-value ≥2.1. Used for the most demanding deep-drawn body panels (door inners, complex fenders, quarter panels) and structural reinforcements requiring extreme formability.
DC05
1.0312
Cold-rolled steel for extra deep drawing. The highest formability grade in the EN 10130 drawing steel series (r-value ≥1.8). Very low yield strength for excellent deep drawability. Used for complex deep-drawn automotive body panels (doors, fenders), kitchen sinks, washing machine drums, and any severe stamping application.
| DC06 | DC05 | |
|---|---|---|
| Material Number | 1.0873 | 1.0312 |
| Category | Carbon Steel | Carbon Steel |
| Standard | EN 10130 | EN 10130 |
Chemical composition (wt%)
| Element | DC06 | DC05 | Overlap |
|---|---|---|---|
| C | 0–0.02% | 0–0.06% | OK |
| Mn | 0–0.25% | 0–0.35% | OK |
| P | 0–0.02% | 0–0.025% | OK |
| S | 0–0.02% | 0–0.025% | OK |
Mechanical properties
| Property | DC06 | DC05 | Unit |
|---|---|---|---|
| tensile_strength | 270–350 | 270–330 | MPa |
| yield_strength | 100–170 | 100–160 | MPa |
| elongation | ≥ 38 | ≥ 40 | % |
Compatibility Assessment
DC06 is interstitial-free (C<0.02%) with Ti/Nb microalloying vs DC05 (C<0.06%). DC06 has higher r-value (≥2.1 vs ≥1.8) and slightly lower YS. Choose DC06 for the most extreme draws; DC05 when slightly less formability is acceptable at lower cost.
Frequently Asked Questions
Is DC06 the same as DC05?
DC06 and DC05 have a 85% composition overlap. DC06 is the ultimate formability — IF steel with r ≥ 2.1
Can I replace DC06 with DC05?
In many cases, yes. The compositions overlap significantly (85%). However, always verify mechanical property requirements and heat treatment compatibility for your specific application.
What is the difference between DC06 and DC05?
The main differences are in the following elements: overall alloying content. DC06 is a Carbon Steel grade, while DC05 is a Carbon Steel grade.
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Data provided for reference only. Always verify against the applicable specification for critical applications.
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