The relevant AISC section lists the ASTM steels that the specification applies to.
The commentary states: [blue] "This Specification lists those products/materials that are commonly useful to structural engineers and those that have a history of satisfactory performance. Other materials may be suitable for specific applications, but the evaluation of those materials is the responsibility of the engineer specifying them. In addition to typical strength properties, considerations for materials may include, but are not limited to strength properties in transverse directions, ductility, formability, soundness, weldability including sensitivity, coatings, and corrosivity."[/blue]
So it appears that if you specify something that is not listed in AISC 360, Section A3.1a, it is up to you to do the research to verify that your use of the material, and application to it in design with respect to safety factors, etc. is appropriate. Sort of hard to do with limited resources, time, fee, etc.
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