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SOAR HIGHER, FINISH FASTER

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, the only American-made A913 steel

Nucor is pushing the limits of construction with Aeos (Agile, Efficient, Optimized, and Sustainable), an economical high-strength structural steel.

  1. AGILE

    Because Nucor is the sole domestic supplier of A913 steel, construction stakeholders can confidently design and build with agility knowing that Aeos will be there on time, when they need it.
  1. EFFICIENT

    Aeos’ higher strength allows construction professionals to maximize efficiencies throughout their structures with regard to material weight and cost.
  1. OPTIMIZED

    Nucor’s unique quench and self-temper process optimizes the metallurgical grain structure of Aeos steel, resulting in reduced weld preheat requirements alongside optimization of steel fabrication and erection.
  1. SUSTAINABLE

    Aeos achieves unrivaled sustainability and boasts a recycled content percentage in excess of 90% through the use of electric-arc furnaces and scrap metal as the primary feedstock.
Featured Aeos Project

Rainier Square Tower

Integrated into the existing environment, the tower uses a shear wall core system consisting of steel plates instead of traditional rebar and formwork between concrete elements. This method reduced the amount of time needed to erect the floors of the tower.

High Strength

Aeos provides a higher strength-to-weight ratio and is more cost-effective. It's available in yield strengths of 50 and 65 ksi.

Proven Weldability

Not only is Aeos a prequalified material under AWS D1.1-2020, but the preheat requirements for it are substantially less than that of A992.

Sustainably Made in the USA

Aeos is the only domestically produced A913 material.

Aeos Specifications At A Glance

Comparison of Aeos to A992
Measure Aeos 50 Aeos 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.

Welding

Aeos is a prequalified material per AWS D1.1-2020, Table 5.3. Aeos 50 and 65 are classified as Category D materials per AWS D.1.1-2020 Table 5.8, which stipulates no welding preheat is required as a result of the material’s limits on maximum carbon and carbon equivalent values. Therefore, significant savings are realized in fabrication, labor and energy costs, and field welded connections.

Aeos Section Availability

Aeos Section Availability
Sections
  W12x W14x W18x W21x W24x W27x W30x W33x W36x W40x W44x
  65 90 76 101 68 84 90 118 135 149 230
  72 99 86 111 76 94 99 130 150 167 262
  79 109 97 122 84 102 108 141 160 183 290
  87 120 106 132 94 114 116 152 170 199 335
  96 132 119 147 103 129 124 169 182 211  
  106 145 130 166 104 146 132 201 194 215  
  120 159 143 182 117 161 148 221 210 235  
  136 176 158 201 131 178 173 241 231 249  
Footweights (plf)
152 193 175 223 146 194 191 263 232 264  
  170 211 192 248 162 217 211 291 247 277  
  190 233 211 275 176 235 235 318 256 278  
  210 257 234   192 258 261 354 262 294  
  230 283 258   192 281 292 387 282 297  
  252 311 283   207 307 326   302 324  
  279 342 311   250 336 357   330 327  
  305 370     279 368 391   361 362  
  336 398     306       395 372  
    426     335       441 397  
    455     370       487 431  
    500             529 503  
    550             652      
    605                    
    665                    
    730                    

Select a Section

All values shown in Footweights (plf)

  • 65
  • 72
  • 79
  • 87
  • 96
  • 106
  • 120
  • 136
  • 152
  • 170
  • 190
  • 210
  • 230
  • 252
  • 279
  • 306
  • 336
  • 90
  • 99
  • 109
  • 120
  • 132
  • 145
  • 159
  • 176
  • 193
  • 211
  • 233
  • 257
  • 283
  • 311
  • 342
  • 370
  • 398
  • 426
  • 455
  • 500
  • 550
  • 605
  • 665
  • 730
  • 76
  • 86
  • 97
  • 106
  • 119
  • 130
  • 143
  • 158
  • 175
  • 192
  • 211
  • 234
  • 258
  • 283
  • 311
  • 101
  • 111
  • 122
  • 132
  • 147
  • 166
  • 182
  • 201
  • 223
  • 248
  • 275
  • 56
  • 61
  • 68
  • 76
  • 84
  • 94
  • 103
  • 104
  • 117
  • 131
  • 146
  • 162
  • 176
  • 192
  • 207
  • 229
  • 250
  • 279
  • 306
  • 335
  • 370
  • 84
  • 94
  • 102
  • 114
  • 129
  • 146
  • 161
  • 178
  • 194
  • 217
  • 235
  • 258
  • 281
  • 307
  • 336
  • 368
  • 90
  • 99
  • 108
  • 116
  • 124
  • 132
  • 148
  • 173
  • 191
  • 211
  • 235
  • 261
  • 292
  • 326
  • 357
  • 391
  • 118
  • 130
  • 141
  • 152
  • 169
  • 201
  • 221
  • 241
  • 263
  • 291
  • 318
  • 354
  • 387
  • 135
  • 150
  • 160
  • 170
  • 182
  • 194
  • 210
  • 231
  • 232
  • 247
  • 256
  • 262
  • 282
  • 302
  • 330
  • 361
  • 395
  • 441
  • 487
  • 529
  • 149
  • 167
  • 183
  • 199
  • 211
  • 215
  • 235
  • 249
  • 264
  • 277
  • 278
  • 294
  • 297
  • 324
  • 327
  • 362
  • 372
  • 397
  • 431
  • 503
  • 230
  • 262
  • 290
  • 335

Note: Smaller shapes are available in ASTM A572, Grade 65. Inquire about availability.

Partners in Innovation

As your strategic partner, it’s our mission to keep you informed of the latest innovations, design trends, and market analytics. We stay at the forefront of the industry, so we can proactively bring you new opportunities for your business and individual projects to drive progress and growth together.

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Minds of Steel

Carol Drucker, lead principal structural engineer at Drucker Zajdel Structural Engineers

It Takes a Team to
Cross a Bridge
Read more

Jayshree Shah, AIA | NCARB | LEED AP BD+C

Inspiring Space and the
People Within It
Read more

Jason Smith, AIA, design principal at SmithGroup

Collaboration for
Brighter Days and
Better Buildings
Read more

Partners In Innovation

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Construction Solutions is a nationwide team that is a proactive resource, leveraging Nucor’s unique position in the supply chain and our vast experience to assist you at every stage of the design and construction process.

To connect to Nucor Construction Solutions and the wealth of expertise across the entire Nucor enterprise, reach out below today.

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