Steel name Symbol C Si Mn P S Rolled steel for general structures 0.06 0... Carbon steel for mechanical structures 0.45; ‑0.55 0.15; ‑0.40 0.40; ‑0.85 0.035 0... Chrome molybdenum steel SCM3 0.33; ‑0.38 0.15; ‑0.35 0.60; ‑0.85 0.03 0...
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