DC01
1.0330Cold-rolled unalloyed low-carbon steel for cold forming. Base grade of the DC family (DC01-DC07). Good formability for bending, coining, beading, and simple drawing operations. Smooth surface suitable for coating and painting. Formerly designated St12.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | ASTM | USA | ASTM A1008 CS Type B | — | REF |
| 🇪🇺 | EN | Europe | DC01 | 1.0330 | 100% |
| 🇪🇺 | DIN | Europe | St12 (old) | — | 98% |
| 🇨🇳 | GB | China | DC01 | — | 95% |
| 🇯🇵 | JIS | Japan | SPCC | — | 90% |
Sources: ASTM A1008, EN 10130:2006, DIN 1623, GB/T 5213, JIS G3141
Chemical composition comparison (wt%)
Side-by-side: DC01 (EN) (EN 10130:2006) vs St12 (old) (DIN)
| Element | DC01 (EN) | St12 (old) (DIN) | Overlap |
|---|---|---|---|
| C | 0–0.12% | — | — |
| Mn | 0–0.6% | — | — |
| P | 0–0.045% | — | — |
| S | 0–0.045% | — | — |
Mechanical properties
Cold worked
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | 270–410 | MPa |
| Yield Strength | 140–280 | MPa |
| Elongation | ≥ 28 | % |
| Elastic Modulus | ≥ 210 | GPa |
| Density | ≥ 7.85 | g/cm3 |
Compatibility verdict
DC01 and St12 (old): 98% composition match
Close equivalents but NOT identical.
Related materials
S355JR
1.0045High-strength low-alloy structural steel with minimum yield strength of 355 MPa. Standard grade for bridges, buildings, cranes, and general structural applications. Impact tested at +20°C (JR).
S690QL
1.8928High-strength quenched and tempered fine-grain structural steel with minimum yield strength of 690 MPa. Used for heavily loaded structures like mobile cranes, mining equipment, bridges, and pressure vessels.
S275JR
1.0044Medium-strength structural steel with minimum yield strength of 275 MPa. Bridges the gap between S235JR and S355JR. Used for general structural applications, lattice towers, masts, and light crane components. Impact tested at +20°C (JR).
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