S355ML
1.8834Thermomechanically rolled fine-grain structural steel — ReH >=355 MPa with Charpy at -50°C (KV >=27J). THE workhorse for large welded steel structures in cold environments. TM rolling = low CEV = excellent weldability even in thick plate. Used for offshore platforms, wind turbine towers, bridges, crane structures, and pressure vessels. Most common TM grade by tonnage.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇪🇺 | EN | Europe | S355ML / 1.8834 | 1.8834 | 100% |
Sources: EN 10025-4
Chemical composition comparison (wt%)
Side-by-side: S355ML (EN) (EN 10025-4) vs S355ML / 1.8834 (EN) (EN 10025-4)
| Element | S355ML (EN) | S355ML / 1.8834 (EN) | Overlap |
|---|---|---|---|
| C | 0–0.14% | 0–0.14% | OK |
| Si | 0–0.5% | 0–0.5% | OK |
| Mn | 0–1.6% | 0–1.6% | OK |
| V | 0–0.12% | 0–0.12% | OK |
| Ti | 0–0.05% | 0–0.05% | OK |
| Nb | 0–0.05% | 0–0.05% | OK |
Mechanical properties
TM Rolled
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | 450–610 | MPa |
| Yield Strength | ≥ 355 | MPa |
| Elongation | ≥ 22 | % |
| charpy_impact_minus50 | ≥ 27 | J |
| Elastic Modulus | ≥ 210 | GPa |
| Density | ≥ 7.85 | g/cm3 |
Compatibility verdict
S355ML and S355ML / 1.8834: 100% composition match
Close equivalents but NOT identical.
Related materials
S355JR
1.0045High-strength low-alloy structural steel with minimum yield strength of 355 MPa. Standard grade for bridges, buildings, cranes, and general structural applications. Impact tested at +20°C (JR).
S690QL
1.8928High-strength quenched and tempered fine-grain structural steel with minimum yield strength of 690 MPa. Used for heavily loaded structures like mobile cranes, mining equipment, bridges, and pressure vessels.
S275JR
1.0044Medium-strength structural steel with minimum yield strength of 275 MPa. Bridges the gap between S235JR and S355JR. Used for general structural applications, lattice towers, masts, and light crane components. Impact tested at +20°C (JR).
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