Steel S355MC (1.0976) datasheet
S355MC is a thermomechanically rolled fine-grain steel for cold forming: at least 355 MPa yield strength with little carbon, so it bends and welds well. Below are the values to EN 10149-2, with their sources.
Standard: EN 10149-2 · Sources checked on October 21, 2026
Designations
| EN name | S355MC |
|---|---|
| Material number | 1.0976 |
| Former name | QStE 360 TM (SEW 092) (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 | – | 1.5 |
| Si | – | 0.5 |
| P | – | 0.025 |
| S | – | 0.02 |
| Al | 0.015 | – |
| Nb | – | 0.09 |
| V | – | 0.2 |
| Ti | – | 0.15 |
| Nb + V + Ti | – | 0.22 |
Ladle analysis to EN 10149-2. Many mills supply tighter than the standard; the inspection certificate is what counts.
Mechanical properties
Values to EN 10149-2 on longitudinal test pieces. The yield strength has a lower limit only. A80 applies to thicknesses under 3 mm, A from 3 mm.
| Condition | Thickness (mm) | ReH (MPa) | Rm (MPa) | A80 (%) | A (%) | Min. bend radius |
|---|---|---|---|---|---|---|
| Thermomechanically rolled (M) | < 3 | ≥ 355 | 430–550 | ≥ 19 | – | 0.25 t |
| Thermomechanically rolled (M) | 3–6 | ≥ 355 | 430–550 | – | ≥ 23 | 0.5 t |
| Thermomechanically rolled (M) | > 6 ≤ 12 | ≥ 355 | 430–550 | – | ≥ 23 | 1 t |
The bend radius is the smallest recommended inside radius according to Arvedi, as a multiple of the thickness t. EN 10149-2 itself asks for a mandrel diameter of 0.5 t in the bend test (180°, transverse test piece).
Physical properties
| Density | 7.85 g/cm³ (at 20 °C) |
|---|---|
| Elastic modulus | 210–212 GPa (at 20 °C) |
| Thermal expansion | 11.1–12.5 × 10⁻⁶/K (at 20–100 °C) |
| Thermal conductivity | 42–54 W/(m·K) (at 20 °C) |
| Specific heat capacity | 461 J/(kg·K) (at 20 °C) |
| Electrical resistivity | 0.15–0.25 Ω·mm²/m (at 20 °C) |
No mill publishes physical properties for S355MC. The spans come from the datasheets of two unalloyed structural steels, S235JR and S355J2C+C.
Processing
Laser cutting
Laser, plasma and oxyfuel cutting are all generally suitable. For bending, laser-cut or machined edges are best: thyssenkrupp gives its own minimum bend radii for such edges only, and punched or sheared edges can spoil the bend.[4][5]
Forming and bending
Very good cold formability. The higher a steel's strength, the larger the bend radius has to be; the recommended inside radii for S355MC are in the table.[4][1][5]
Welding
Weldable with all common processes and consumables. With its low carbon content the heat-affected zone barely hardens, and cold cracking is hardly a risk. Preheating is usually unnecessary; thyssenkrupp recommends limiting preheat and interpass temperature to 150 °C.[5][4][6]
Steel S355MC (1.0976) at Dynamic Parts
We cut parts from 3 mm, 4 mm, 5 mm, and 6 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
- Acciaieria Arvedi: Microalloyed high strength steels. Accessed on October 21, 2026.
- ArcelorMittal Europe: H20: High yield strength steels for cold forming, thermomechanical steels, 03.02.2026. Accessed on October 21, 2026.
- thyssenkrupp Steel: perform®: product information for high-strength thermomechanically hot-rolled strip, 05.12.2024. Accessed on October 21, 2026.
- thyssenkrupp Steel: perform®: information on use and processing, April 2025. Accessed on October 21, 2026.
- SSAB: Data sheet 2276 SSAB Domex 355MC, 07.02.2022. Accessed on October 21, 2026.
- Kloeckner Metals Germany: S355MC Datenblatt (Werkstoff 1.0976). Accessed on October 21, 2026.
- thyssenkrupp Materials Services: Material Data Sheet S235JR, hot rolled non-alloyed structural steel, 11.2016. Accessed on October 21, 2026.
- thyssenkrupp Materials Services: Werkstoffdatenblatt S355J2C+C 1.0579, 01.2017. 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.