S460NL
1.8903High-strength normalized fine-grain structural steel with 460 MPa yield and impact testing at -50°C. The highest-strength grade in the EN 10025-3 normalized series. Used for offshore platforms, wind turbine towers, arctic bridges, cranes, and heavy steel structures in cold climates.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | ASTM | USA | ASTM A633 Gr E (approx) | — | REF |
| 🇪🇺 | EN | Europe | S460NL | 1.8903 | 100% |
| 🇨🇳 | GB | China | Q460E | — | 93% |
Sources: ASTM A633, EN 10025-3:2019, GB/T 1591
Chemical composition comparison (wt%)
Side-by-side: S460NL (EN) (EN 10025-3:2019) vs Q460E (GB)
| Element | S460NL (EN) | Q460E (GB) | Overlap |
|---|---|---|---|
| C | 0–0.2% | — | — |
| Si | 0–0.6% | — | — |
| Mn | 1–1.7% | — | — |
| P | 0–0.025% | — | — |
| S | 0–0.02% | — | — |
| Cr | 0–0.3% | — | — |
| Mo | 0–0.1% | — | — |
| Ni | 0–0.8% | — | — |
| V | 0–0.2% | — | — |
| Cu | 0–0.55% | — | — |
| Al | 0–0.02% | — | — |
| Ti | 0–0.05% | — | — |
| Nb | 0–0.05% | — | — |
Mechanical properties
Normalized
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | 540–720 | MPa |
| Yield Strength | ≥ 460 | MPa |
| Elongation | ≥ 17 | % |
| Elastic Modulus | ≥ 210 | GPa |
| Density | ≥ 7.85 | g/cm3 |
Heat treatment
| Process | Temperature | Medium | Holding Time | Notes |
|---|---|---|---|---|
| normalizing | 880–940 °C | air | min 2 min per mm | Delivery condition: normalized or normalized rolled |
| stress_relief | 550–650 °C | furnace | 1 hour per 25mm | PWHT after welding if required |
Compatibility verdict
S460NL and Q460E: 93% 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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