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A Note from the Publisher:
Visit us online at www.enr.com for daily news updates, latest product information, and articles. The following message is brought to you on behalf of Nucor, an ENR marketing partner. We hope you find it valuable, and on behalf of our entire team, thank you for reading!
Scott Seltz
Publisher
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The Aeos Advantage
Elevate your project expectations and efficiency with Nucor Aeos—the optimized A913 that's backed by a team of collaborative experts from Nucor Construction Solutions. Aeos from Nucor is the next generation of structural steel that combines high strength with superior weldability, toughness, and ductility. It offers the most progressive specification for structural shapes in the market and is available in minimum yield strengths of 50 and 65 ksi.
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WHAT IT'S USED FOR
Typical uses include columns, beams, and members of long-span trusses. Aeos 65 is often specified to reduce member weight, weld preheat, and time and energy spent on projects. Specifiers can expect to see weight savings of 10% to 25% over A992 for these applications. Aeos 50 can also be used in seismic applications due to a controlled specified maximum yield strength and a maximum yield-to-tensile strength ratio. |
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HOW IT'S MADE
Aeos is made in Blytheville, Arkansas, at our Nucor-Yamato facility. An in-line Quenching and Self-Tempering (QST) apparatus installed at the end of our rolling line allows efficient production of Aeos. The QST equipment consists of several bays of water nozzles used to perform an in-line heat treatment and cooling rate control process on our structural shapes. The method includes a regulated cooling (quench) of the section, followed by a reheat using energy retained within the core of the section (self-tempering). The procedure leads to a refinement of the steel microstructure, which gives the section high yield and tensile strengths while also maintaining good ductility and toughness of the material. |
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THE ONLY A913 MADE IN AMERICA
With a capacity of more than 2.5 million tons, Nucor is the only North American steel company capable of producing Aeos. |
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WHAT DOES THIS MEAN FOR YOU?
It means that mill order changes, availability, tariffs, and foreign supply chain issues don't even enter the picture for your North American projects. It means you can construct faster and more economically, and do so with fewer headaches. It means you can design and build with more confidence.
Aeos delivers significant savings in fabrication, labor, and energy costs, as well as in field-welded connections. Some savings examples include:
- On average, columns can realize a weight savings of 15% to 25% when switching from A992 to Aeos 65. This translates to significant material cost savings, reduced foundation requirements, and lighter strength cranes. Each ton of steel that is eliminated reduces the overall GHG-equivalent output for the structure. Long span trusses can see a weight savings of 15% to 25% in members. This weight savings reduces the overall truss dead load, which allows for the design of smaller sections throughout the truss.
- When switching from A992 to Aeos 65, you can generally expect to decrease your column sizes by 2 footweights within the same section family.
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INVESTMENTS FOR POSITIVE IMPACT
Aeos complements Nucor's environmental commitments by reducing the weight of structural members, which leads to a smaller carbon footprint, the ability to use lighter erection cranes, a reduction in the size of a building's foundations, and fewer architectural finishes encapsulating the structure.
Over the last decade, we've invested over $350 million in environmental process equipment improvements. Part of this investment is seen in our mini-mills, which are powered by electric arc furnaces (EAFs) as opposed to blast furnaces. The use of EAF technology melts recycled scrap and turns it into new steel, which plays a significant part in reducing Nucor's environmental impact. In fact, in 2021, Nucor turned 20 million tons of scrap into new steel products that are infinitely recyclable.
And we aren't stopping there. We continuously work to reduce our GHG emissions and our impact on climate change through our energy efficiency efforts. Nucor's annual GHG savings equates to the global average emissions of 4 million gas-powered cars.
Building the green economy of the future means choosing sustainable solutions today.
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