S420ML
1.8836Thermomechanically rolled fine-grain structural steel — ReH >=420 MPa with Charpy at -50°C (KV >=27J). Between S355ML and S460ML in the TM strength range. Lower CEV than S420N = better weldability. Used for crane booms, offshore structures, bridge girders, and pressure vessels requiring high strength with excellent low-temperature toughness and weldability.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇪🇺 | EN | Europe | S420ML / 1.8836 | 1.8836 | 100% |
Sources: EN 10025-4
Chemical composition comparison (wt%)
Side-by-side: S420ML (EN 10025-4) vs S420ML / 1.8836 (EN) (EN 10025-4)
| Element | S420ML (EN 10025-4) | S420ML / 1.8836 (EN) | Overlap |
|---|---|---|---|
| C | — | 0–0.16% | — |
| Si | — | 0–0.5% | — |
Mechanical properties
Compatibility verdict
S420ML and S420ML / 1.8836: 100% composition match
Related materials
C45
1.0503Medium carbon unalloyed quality steel. Good machinability and moderate strength after heat treatment. Widely used for shafts, spindles, pins, studs, and general machine parts.
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).
S235JR
1.0038General-purpose structural steel with minimum yield strength of 235 MPa. The most common structural steel grade in Europe for general construction, frames, and non-critical structural applications.
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