S355MC is a hot-rolled, high-strength, low-alloy structural steel designed for cold forming and is specified by the EN 10149-2 standard. Here’s why S355MC steel is widely used and valued:
- Yield Strength: The “355” in the name comes from its minimum yield strength of 355 MPa, making it suitable for applications that demand good structural strength and load-bearing capacity.thyssenkrupp-materials-processing-europe+2
- Formability: S355MC is noted for its excellent cold formability, thanks to its fine-grained microstructure and microalloying elements (such as niobium, vanadium, and titanium), allowing for bending, folding, and flanging without cracking.esb-group+2
- Weldability: It offers outstanding weldability and is readily used in welded structures without the risk of brittle fractures.mtladv+1
- Toughness and Elongation: S355MC provides good elongation (typically 19% or more), enabling a balance of strength and ductility for forming complex shapes.tritonalloysinc+1
- Thickness Range: This steel is available in a range of thicknesses and maintains consistent properties across different thicknesses.thyssenkrupp-steel
- Surface Quality and Consistency: High surface quality and tight thickness tolerances allow for repeatable and reliable processing in automated fabrication environments.mtladv
- Typical Applications: S355MC is commonly used in automotive chassis, structural beams, heavy-duty components, machinery, and agricultural equipment—anywhere that needs a combination of high strength, reduced weight, and good formability.esb-group+1
In the steel grade name S355MC:
- “S” stands for structural steel, indicating the steel is intended for structural applications.
- “MC” stands for Microalloyed Commercial quality, meaning the steel is a microalloyed grade designed for cold forming with enhanced mechanical properties due to small amounts of alloying elements like niobium (Nb), vanadium (V), and titanium (Ti).
Together, S355MC denotes a structural steel with a minimum yield strength of 355 MPa, microalloyed and optimized for cold forming applications.
| Property | S355MC Steel |
|---|---|
| Yield Strength | 355 MPa min |
| Tensile Strength | 430–550 MPa |
| Elongation at Break | ≥19% (varies with gauge) |
| Key Alloying Elements | Nb, V, Ti, Al |
| Typical Hardness | 140–180 HB |
| Main Features | High strength, formability, weldability |
Summary Table:
🟩 S355MC (EN 10149-2 High-Strength Low-Alloy Steel)
| Property | Value |
|---|---|
| Category | Metals |
| Subcategory | High Strength Low Alloy (HSLA) |
| Density | 7.85e-06 kg/mm³ |
| Young’s Modulus | 210 GPa |
| Poisson’s Ratio | 0.3 |
| Shear Modulus | 80 GPa |
| Yield Strength | 355 MPa |
| Ultimate Tensile Strength | 460 MPa |
| Thermal Conductivity | 45 W/m·K |
| Specific Heat | 480 J/kg·K |
| Thermal Expansion Coefficient | 1.2e-5 1/K |
| Reference Temperature | 20 °C |
| Color (RGB) | 110,110,110 |
| Crosshatch Pattern | Steel |
| Alternative Names | EN 10149-2 S355MC, HSLA Steel, QStE 360TM, Thermomechanically Rolled Steel |
hi