Steel DC01 (1.0330) datasheet
DC01 is the basic grade among cold rolled mild steels: smooth, dimensionally accurate, easy to bend and weld, for simple to moderate forming. Its old German name is St12. Below are the values to EN 10130, with their sources.
Standard: EN 10130 · Sources checked on October 21, 2026
Designations
| EN name | DC01 |
|---|---|
| Material number | 1.0330 |
| Former DIN name | St12 |
| Former name | FeP01 |
| JIS | SPCC (comparable) |
Comparable means similar in composition and use, but made to another standard with its own limits. Before substituting one for the other, check both standards.
Chemical composition
Ladle analysis in % by mass.
| Element | min. | max. |
|---|---|---|
| C | – | 0.12 |
| Mn | – | 0.6 |
| P | – | 0.045 |
| S | – | 0.045 |
Mechanical properties
Values to EN 10130 on transverse test pieces, A80 with an 80 mm gauge length. The standard sets only an upper limit for the yield strength; for design, 140 MPa may be assumed as a minimum.
| Condition | Thickness (mm) | Re (MPa) | Rm (MPa) | A80 (%) |
|---|---|---|---|---|
| Cold rolled | 0.35–0.5 | ≤ 320 | 270–410 | ≥ 24 |
| Cold rolled | > 0.5 ≤ 0.7 | ≤ 300 | 270–410 | ≥ 26 |
| Cold rolled | > 0.7 ≤ 3 | ≤ 280 | 270–410 | ≥ 28 |
DC01 ages: the upper yield limit holds for only 8 days after the sheet is made available, and thyssenkrupp recommends processing DC01 within 6 weeks. A guarantee lasting months starts with DC03.
Physical properties
| Density | 7.85 g/cm³ (at 20 °C) |
|---|---|
| Elastic modulus | 210 GPa (at 20 °C) |
| Thermal expansion | 11.9 × 10⁻⁶/K (at 20–100 °C) |
| Thermal conductivity | 48 W/(m·K) (at 20 °C) |
| Specific heat capacity | 461 J/(kg·K) (at 20 °C) |
| Electrical resistivity | 0.15 Ω·mm²/m (at 20 °C) |
| Magnetic | Magnetic |
Sources: [1]
thyssenkrupp's guide values for DC01 to DC07, not part of the standard.
Processing
Forming and bending
For moderate forming, above all bending and simple drawing. The grades DC03 to DC07 are meant for demanding deep drawing.[3][2]
Welding
Joins by all common resistance and fusion welding processes, and can also be soldered, bonded, seamed and clinched. Laser welding leaves the mechanical and surface properties next to its narrow seam almost unaffected. Gas fusion welding should be stated when ordering.[1][3]
Surface
Surface quality A allows small defects that do not affect forming or the adhesion of coatings. With quality B, the better side is free enough of defects for a quality paint finish to look even. By roughness there are the finishes b (Ra ≤ 0.4 µm), g (Ra ≤ 0.9 µm), m (Ra 0.6 to 1.9 µm) and r (Ra over 1.6 µm), oiled or unoiled. Dimensional and shape tolerances to EN 10131.[3][4]
Steel DC01 (1.0330) at Dynamic Parts
We cut parts from 1 mm, 1.5 mm, 2 mm, and 2.5 mm, up to 550 × 1150 mm, from a single piece. The material page lists prices for every thickness, and the configurator prices a part of your own straight away.
See pricesSources
- thyssenkrupp Materials Services: Werkstoffdatenblatt Weiche Stähle zum Kaltumformen (DC01 bis DC07), 07.2017. Accessed on October 21, 2026.
- ArcelorMittal: B10: Steels for cold forming, 11.08.2026. Accessed on October 21, 2026.
- Kloeckner Metals Germany: DC01 Datenblatt (Werkstoff 1.0330). Accessed on October 21, 2026.
- thyssenkrupp Materials Processing Europe: Cold-rolled sheet. Accessed on October 21, 2026.
The values come from the sources named and are given for guidance. What binds is the standard in its current edition and the inspection certificate for the batch delivered. Where sources differ, the value says so.