1045 Steel for F1554 Grade 55

SAE (AISI) 1045 in an “as rolled” condition will likely not meet the mechanical requirements of ASTM F1554 Grade 55. ASTM F1554 Grade 55 is a finished fastener specification with mechanical and chemical requirements. SAE 1045 has chemical requirements associated with it; however there are no mechanical requirements since it is a raw material specification, not a finished fastener. The majority of raw material grades lack any data on the yield, tensile, elongation, and reduction of area properties needed to certify it to ASTM F1554 Grade 55.

As stated, 1045 does not have any mechanical requirements, however when doing a search online for what the typical mechanical properties would be for 1045, findings were as low as 45,000 psi yield and 81,900 psi tensile. This tensile would be in the required range of 75ksi to 95ksi; however a 45ksi yield would not meet the Grade 55 requirement of 55ksi. There is always a chance that a heat of 1045 round bar would meet the mechanical requirements; however there is no way of knowing unless it has been tested. Unless instructed to do so, there wouldn’t be any reason to perform a strength test on the material.

In summary, SAE 1045 round bar should not be used to manufacture F1554 Grade 55 anchor bolts since there is a high likelihood that it would not meet the mechanical requirements. Grade 55 round bar is the appropriate material to use, which Portland Bolt inventories from 1/2″ thru 4″ diameter. Portland bolt manufactures F1554 Grade 55 anchor using this round bar into any anchor bolt configuration required.