Aeos

Turn your project’s bold vision into reality with high-strength structural steel

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ELEVATE YOUR PROJECT. ACHIEVE YOUR DESIGN GOALS.

Nucor is advancing the possibilities of construction with Aeos — agile, efficient, optimized, and sustainable — an economical high-strength structural steel.

Sustainable

Aeos is the lowest-embodied-carbon steel 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.

HOW AEOS IS MADE

Aeos A913 is made using a specialized quench and self-temper (QST) process that optimizes the steel’s metallurgical grain, resulting in both higher strength and reduced weld preheat requirements compared to A992. While QST is an additional process in our mill, it occurs in-line with our normal rolling schedule, making Aeos readily available.

DESIGN & Planning Tools

Design and specify with confidence, even if this is your first time specifying A913. Nucor’s Construction Solutions team can run conceptual design studies based on your project requirements.

Aeos Availability A913 V. A992 Tech Specs

Aeos Specifications At A Glance

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.

AEOS RESOURCES

Many fabricators, erectors, detailers, welders, inspectors, structural engineers, and designers have already found the value in utilizing A913 steel in their projects. Discover the benefits of working with A913 in the resources below.

Download Aeos Brochure Download Welding Guidelines