ASTM A913 High-Strength Structural Steel
Aeos®
Aeos ASTM A913 wide flange is made using a specialized quench and self-temper (QST) process and Aeos ASTM A1066 plate is refined through a thermo-mechanical controlled process (TMCP). These processes optimize the steel’s metallurgical grain, resulting in higher strength, increased weldability and reduced weld preheat requirements compared to traditional grades like ASTM A992, ASTM A572 and A709-70W. While QST and TMCP are additional processes in our mill, they occur in-line with our normal rolling schedule, making Aeos products readily available.
Sustainable
Aeos is one of the lowest-embodied-carbon steels of its kind, made with more than 95% recycled content using our circular, electric arc furnace (EAF) steelmaking process.
Cost-Effective Strength
Aeos’ high strength allows construction professionals to reduce tonnage, maximize structural efficiencies and deliver sustainable, cost-effective designs.
Manufactured in the USA
Aeos is the only domestically produced A913 steel. Construction stakeholders can design and build with confidence knowing it will be there on time, when you need it.
Welding Benefits
Nucor’s quench and self-temper process optimizes Aeos’ grain structure, resulting in reduced weld preheat requirements and optimized fabrication and erection.
Aeos® A913 vs A992 Tech Specs
Design and specify your next building or bridge with confidence. Nucor’s team of specialists can run conceptual design studies based on your project requirements.
| Comparison of Aeos® ASTM A913 to ASTM A992 | |||
|---|---|---|---|
| Measure | Aeos Grade 50 | Aeos Grade 65 | A992 |
| Yield strength, ksi | 50 | 65 | 50 |
| Tensile strength, ksi | 65 | 80 | 65 |
| Max yield strength, ksi | 65 | No Max | 65 |
| Max yield-to-tensile ratio | 0.85 | No Max | 0.85 |
| Min. CVN: 40 ft.-lbf @ 70° F | Yes* | Yes* | No |
| Min. elongation (8” sample) | 18% | 15% | 18% |
| Max carbon equivalent, % | 0.38 | 0.43 | 0.47/0.45** |
| Weldable without preheat | Yes | Yes | No |
*Supplement S30 may be requested on the purchase order for Charpy V-notch testing at the alternate core location for shapes with a flange thickness greater than 1 1/2″. CVN impact tests shall be performed according to ASTM A673 to a minimum average absorbed energy for each test of 20 ft-lbf at 70°F unless noted otherwise on the purchase order.
**0.47% for section with flange thickness greater than 2″ (50 mm), 0.45% for all other shapes.
Introducing Aeos® ASTM A1066
Nucor’s suite of Aeos products is expanding with Aeos ASTM A1066. Nucor’s high-strength structural steel wide flange and plate products offer enhanced material and welding efficiencies for your next building or bridge project. Connect with our team to learn more about our Aeos products, availability and specifications.
Aeos® Resources
Explore the advantages of building with Aeos® ASTM A913 wide flange compared to ASTM A992 along with the product rolling schedule, sustainability, availability and grades offered.
Overview of steel products Nucor offers for building construction and bridge construction projects including high-rises, long-span bridges with high-strength structural steel plate, warehouses, data centers and more.
A pocket resource that includes design equations, diagrams, dimensions and properties for a variety of steel products including wide flange, channels, hollow structural sections (HSS) and rebar.
Learn about how Aeos® ASTM A913 offers optimized grain structure from the quench and self-temper (QST) process, which reduces weld pre-heat requirements and optimizes fabrication and erection while reducing energy consumption.
Learn how to specify sustainable steel in the design phase of your project and add procurement parameters into your construction documents.
Find out the availability of Nucor’s Aeos® A913 wide flange beams, including how often they are produced to effectively plan for your project needs.
See how Nucor is advancing the built world with sustainable steel through this overview showcasing steel products for the construction industry from the early design stage to project completion.
Aeos® Case Studies
The Spiral: Shaping the Future of Commercial Workspace
Learn how Nucor steel helped architects design The Spiral in NYC with less material and achieve LEED gold: Aeos® ASTM A913 high-strength structural steel.
Nucor Steel Makes Vision Reality for Bank of America Tower Chicago
Bank of America Tower Chicago was built with Nucor’s Aeos® A913 high-strength steel, providing design flexibility for architects & engineers.
Salesforce® Tower Chicago
Chicago’s Salesforce® tower showcases the architectural power of Nucor’s Aeos® high-strength structural steel, ASTM A913 Grade 65.
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