S650MC
1.8976High yield strength alloy special steel for cold forming with minimum yield strength 650 MPa. Thermomechanically rolled. Bridges the gap between S600MC and S700MC in the EN 10149-2 series. Used for weight-optimized automotive and commercial vehicle components, heavy-duty chassis, and structural members requiring excellent cold formability at very high strength levels.
Chemical composition comparison (wt%)
Side-by-side: S650MC (EN) (EN 10149-2) vs ASTM
| Element | S650MC (EN) | ASTM | Overlap |
|---|---|---|---|
| C | ≤ 0.12% | — | — |
| Si | ≤ 0.6% | — | — |
| Mn | ≤ 2% | — | — |
| P | ≤ 0.025% | — | — |
| S | ≤ 0.015% | — | — |
| V | ≤ 0.2% | — | — |
| Ti | ≤ 0.22% | — | — |
| Nb | ≤ 0.09% | — | — |
Mechanical properties
TMCP
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | 700–880 | MPa |
| Yield Strength | ≥ 650 | MPa |
| Elongation | ≥ 12 | % |
| impact_kv | ≥ 27 | J |
| Density | ≥ 7.85 | g/cm3 |
| Elastic Modulus | ≥ 210 | GPa |
Related materials
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EN-GJS-500-7
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