ASTM F1554 Anchor Bolts SPECIFICATIONS

ASTM F1554 is the specification for anchor bolts or anchor rods that designates three grades 36, 55 and 105, each with different chemical properties and yield strengths. Originally introduced in 1994, the ASTM F1554 specification covers bent anchor bolts, straight anchor rods that are either headed or headless from materials that are carbon, carbon boron, alloy, and high-strength, low alloy steel. The standards designated in the ASTM F1554 specification govern the design, manufacture and testing of anchor bolts and anchor rods.

Grades of ASTM F1554 Anchor Bolts

Grade 36     Standard, Low Carbon Steel      Sizes from 1/4 inch to 4 inch    36 ksi min. yield strength

Grade 55     Modified Mild Steel                     Sizes from 1/4 inch to 4 inch    55 ksi min. yield strength

Grade 105   Heat-treated Med Carbon Alloy  Sizes from 1/4 inch to 3 inch  105 ksi min. yield strength

Anchor Bolt Applications

Anchor bolts typically have a nut and washer attached at the threaded end in order to secure objects or structures to concrete. The anchor bolts provided by Anchor Bolt Source are used to secure a large variety of items and structures. From flagpoles to refinery reactors and light rail to large combined cycle power plants, these bolts anchor equipment, structures and support steel to concrete foundations.

There are three general anchor bolt configurations that are typically provided, bent anchor bolts, plate or standard anchor bolts and headed anchor bolts.  Bent anchor bolts have a 90 degree bend that is embedded in the concrete which provides increased resistance to secure the structure to the foundation.  Plate or standard anchor rods typically consist of an anchor rod with a plate and nut attached at one end that when embedded in concrete provides increased pull-out resistance.  Headed or hex head anchor bolts are placed with the hex head in the concrete in order to provide increased resistance and provide a secure connection.

Properties by Anchor Bolt Grades

Grade   Size              Tensile, ksi     Yield, ksi min     Yield, MPa min     Elongation, % min     RA, % min

36          ¼-4 in.        58 – 80           36                       248                        23                                40

55          ¼-2 in         75 – 95           55                       380                        21                                30

55          2¼-2½ in    75 – 95          55                        380                       21                                22

55          2¾-3 in       75 – 95          55                        380                       21                                20

55          3¼-4 in       75 – 95          55                        380                       21                                18

105        ¼-3 in         125 – 150      105                     724                       15                                 45

Chemical Make-up of Anchor Bolt Grades

Grade 36                                                                                                                         Grades 55 and 105

Element                Sizes to ¾ in    Sizes over ¾ to 1½ in    Sizes over 1½ to 4 in

Carbon                      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             0.20%                0.20%                               0.20%                           0.20%

* Optional with the manufacturer but shall be compatible with weldable steel.