Sustainable, High-Strength Steel for Offshore Wind Energy
Elcyon®
Elcyon® is the world’s most sustainable steel plate conforming to EuroNorm 10025 and 10225, available in the full range of sizes and piece weights required for offshore wind projects.


Weldability
Elcyon’s low carbon equivalency chemistry offers superior processing for the high heat inputs of offshore fabrication.

Formability
The clean, consistent microstructure of Elcyon plate offers predictable, repeatable shop fabrication.

High Fracture Toughness
Designed with demanding offshore applications in mind, Elcyon foundations deliver superior performance in hostile applications.
High Performance, Low Emissions
Nucor created Elcyon plate to meet the rigorous standards of offshore wind energy designers, manufacturers and fabricators, while also meeting Nucor’s rigorous standards for performance and sustainability.
Elcyon® Plate Specifications
Nucor is the only domestic supplier of sustainable steel plate, meeting the requirements of EuroNorm 10025 and 10225 in a full range of sizes and piece weights required for offshore wind fabrication.
Elcyon plate is available nationwide and can be delivered to any project or fabrication site in the USA via rail or barge.
| Comparison of Elcyon plate to A572-50 | |||
|---|---|---|---|
| Measure | Elcyon S355 ML | Elcyon S420 ML | A572-50 |
| Min. Yield strength | 335 Mpa / 48 ksi | 390 Mpa / 56 ksi | 345 Mpa / 50 ksi |
| Min. Tensile strength | 470 Mpa / 65 ksi | 500 Mpa / 72 ksi | 450 Mpa / 65 ksi |
| Max yield-to-tensile ratio | 0.84 | 0.84 | 0.87 |
| Min. elongation (8” sample) | 22% | 19% | 16% |
| Min. L-CVN @-40° C (-40° F) | 31J, 23 ft-lbs | 31J, 23 ft-lbs | — |
| Typical carbon equivalent, % | 0.41 | 0.44 | 0.46 |









