Description
EN 10149-2 High-strength low-alloy steel for cold forming
EN 10149-2 is a European standard that specifies high-strength, low-alloy steel grades for cold-forming applications. These steels are thermomechanically rolled and offer excellent weldability, toughness, and formability.
Grades in EN 10149-2
- S315MC – Minimum yield strength of 315 MPa
- S355MC – Minimum yield strength of 355 MPa
- S420MC – Minimum yield strength of 420 MPa
- S460MC – Minimum yield strength of 460 MPa
- S500MC – Minimum yield strength of 500 MPa
- S550MC – Minimum yield strength of 550 MPa
- S600MC – Minimum yield strength of 600 MPa
- S650MC – Minimum yield strength of 650 MPa
- S700MC – Minimum yield strength of 700 MPa
EN 10149-2 Dimensions
Thickness
- EN 10149-2 S460MC: 2–10 mm thick
- EN 10149-2 S500MC: 2–13 mm thick
- EN 10149-2 S355MC: 1.5–20 mm thick
- EN 10149-2 S500MC steel plates: 2–10 mm thick
Width
- EN 10149-2 S460MC: Up to 1600 mm wide
- EN 10149-2 S500MC: Up to 1800 mm wide
- EN 10149-2 S355MC: Up to 2070 mm wide
- EN 10149-2 S500MC steel plates: Up to 1600 mm wide
Length
- EN 10149-2 S460MC: Up to 16000 mm long
- EN 10149-2 S500MC: Up to 16000 mm long
- EN 10149-2 S355MC: Up to 16000 mm long
- EN 10149-2 S500MC steel plates: Up to 16000 mm long
Chemical Composition
| Grade | C (max) | Si (max) | Mn (max) | P (max) | S (max) | Al (min) | Nb (max) | Ti (max) | V (max) |
|---|---|---|---|---|---|---|---|---|---|
| S315MC | 0.12 | 0.50 | 1.60 | 0.025 | 0.015 | 0.015 | 0.09 | 0.15 | 0.20 |
| S355MC | 0.12 | 0.50 | 1.70 | 0.025 | 0.015 | 0.015 | 0.09 | 0.15 | 0.20 |
| S420MC | 0.12 | 0.50 | 1.80 | 0.025 | 0.015 | 0.015 | 0.09 | 0.15 | 0.20 |
| S460MC | 0.12 | 0.50 | 1.90 | 0.025 | 0.015 | 0.015 | 0.09 | 0.15 | 0.20 |
| S500MC | 0.12 | 0.50 | 2.00 | 0.025 | 0.015 | 0.015 | 0.09 | 0.15 | 0.20 |
| S550MC | 0.12 | 0.50 | 2.10 | 0.025 | 0.015 | 0.015 | 0.09 | 0.15 | 0.20 |
| S600MC | 0.12 | 0.50 | 2.10 | 0.025 | 0.015 | 0.015 | 0.09 | 0.15 | 0.20 |
| S650MC | 0.12 | 0.50 | 2.10 | 0.025 | 0.015 | 0.015 | 0.09 | 0.15 | 0.20 |
| S700MC | 0.12 | 0.50 | 2.10 | 0.025 | 0.015 | 0.015 | 0.09 | 0.15 | 0.20 |
EN 10149-2 Mechanical Properties
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) (≥ 80mm) | Elongation (%) (≥ 5.65√S₀) |
|---|---|---|---|---|
| S315MC | ≥ 315 | 390 – 510 | 22 | 26 |
| S355MC | ≥ 355 | 430 – 550 | 21 | 25 |
| S420MC | ≥ 420 | 480 – 620 | 19 | 23 |
| S460MC | ≥ 460 | 520 – 670 | 17 | 21 |
| S500MC | ≥ 500 | 550 – 700 | 16 | 20 |
| S550MC | ≥ 550 | 600 – 760 | 14 | 18 |
| S600MC | ≥ 600 | 650 – 820 | 14 | 17 |
| S650MC | ≥ 650 | 700 – 880 | 12 | 16 |
| S700MC | ≥ 700 | 750 – 950 | 12 | 15 |
Physical Properties
| Property | Value (Approximate) |
|---|---|
| Density | 7.85 g/cm³ |
| Thermal Conductivity | 45 W/m·K |
| Electrical Resistivity | 0.15 Ω·mm²/m |
| Specific Heat Capacity | 500 J/kg·K |
Applications
- Automotive structural components
- Construction and engineering machinery
- Truck and trailer frames
- Cold-formed parts and profiles
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