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Specifications

ASTM F1554

The ASTM F1554 specification covers anchor bolts designed to anchor structural supports to concrete foundations. F1554 anchor bolts can be either headed bolts, straight rods, or bent anchor bolts. The three grades 36, 55, and 105 designate the minimum yield strength (ksi) of the anchor bolt. The bolts can be either cut or roll threaded and a weldable grade 55 can be substituted for grade 36 at the supplier's option. Color coding on the end – 36 blue, 55 yellow, and 105 red – helps facilitate easy identification in the field. Permanent manufacturer and grade marking is allowed under the S2 supplementary requirements.

Applications for F1554 anchor bolts include columns in structural steel framed buildings, traffic signal and street lighting poles, and overhead highway sign structures.

F1554 Grades

F1554 Grade 36 Low carbon, 36 ksi yield steel anchor bolts
F1554 Grade 55 High strength, low alloy, 55 ksi yield steel anchor bolts
F1554 Grade 105 Alloy, heat treated, high strength 105 ksi yield steel anchor bolts

Supplementary Testing

Supplementary requirements shall apply only when specified in the purchase order or contract.

S1: Weldable version of the Grade 55 specification. Through chemical composition restrictions and by a carbon equivalency formula, S1 provides assurance of weldability. When S1 is not specified, the Grade 55 material may or may not be weldable.

S2: Permanent manufacturer's identification on the end of the anchor bolt that projects from the concrete, in lieu of color coding.

S3: Permanent grade identification on the end of the anchor bolt that projects from the concrete, in lieu of color coding.

S4: Charpy Impact requirements at +40°F (+5°C) for grades 55 and 105. The minimum Charpy V-notch energy requirement is an average of 15ft-lbs for three specimens, with no one specimen falling below 12ft-lbs. Charpy Impact requirements at -20°F (-29°C) for grade 105. The minimum Charpy V-notch energy requirement is an average of 15ft-lbs for three specimens, with no one specimen falling below 12ft-lbs.

F1554 Mechanical Properties

Grade Marking Size inches Tensile, ksi Yield, ksi min Yield, MPa min Elong. % min RA % min
36 1/2 - 4 58 - 80 36 248 23 40
55 1/2 - 2 75 - 95 55 380 21 30
21/4 - 21/2 75 - 95 55 380 21 30
23/4 - 3 75 - 95 55 380 21 30
31/4 - 4 75 - 95 55 380 21 30
105 1/2 - 3 125 - 150 105 724 15 45
  • Stamping of F1554 bolts with manufacturer's identification is a supplemental requirement (S2)
  • Color coding is required unless the grade is stamped in accordance with supplemental requirement (S3).
  • When Grade 36 is specified, a weldable Grade 55 may be furnished at the supplier's option.

F1554 Chemical Properties

Element Grade 36 Grades 55 and 105
Sizes up to 3/4 Sizes over 3/4 to 1-1/2 Sizes over 1-1/2 to 4
Carbon (max) 0.26% 0.27% 0.28%
Manganese * 0.60 - 0.90% 0.60 - 0.90%
Phosphorus, max 0.04% 0.04% 0.04% 0.040%
Sulfur, max 0.05% 0.05% 0.05% 0.050%
Copper, min (when specified) 0.20% 0.20% 0.20% 0.20%
* Optional with the manufacturer but shall be compatible with weldable steel

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