F1554 Grade 105

Overview

ASTM F1554 grade 105 anchor bolts are manufactured from medium carbon alloy steel that has been quenched and tempered (heat treated) to develop the desired mechanical values. This is the highest strength version of the F1554 specification, with a minimum yield strength of 105 ksi, covering anchor bolts in diameters ranging from 1/4" through 3".

Galvanizing

F1554 grade 105 bolts can be galvanized even though they are relatively high in strength. The galvanizing does not affect the mechanical properties of the anchor bolt and will not cause hydrogen embrittlement.

Welding

F1554 grade 105 anchor bolts should not be welded. Since they develop their strength characteristics through a heat treating process, applying heat (welding) in an uncontrolled environment could change the mechanical properties of the anchor bolt. The Ninth Edition of the AISC (American Institute of Steel Construction) Steel Construction Manual (page 4-4) states, "Anchor bolt material that is quenched and tempered (heat treated) should not be welded or heated."

Supplementary Testing

Charpy impact testing can be requested as a supplementary requirement. Supplemental S4 designates impact testing at +40°F and is applicable to both grades 55 and 105. Supplemental S5 designates impact testing at -20°F and is applicable only to grade 105. In both cases the minimum v-notch energy requirement is an average of 15ft-lbs for three specimens, with no one specimen falling below 12ft-lbs.

Mechanical Requirements

Grade Identification Size, Inches Tensile, ksi Yield, ksi min Yield, MPa min Elong. % min Reduction of Area %, min
105 F1554 Grade 105 1/4 - 3 125 - 150 105 724 15 45

1Color coding (red) is required while permanent stamping with manufacturer's identification (S2) and grade designation (S3) are supplementary requirements.

Nuts and Washers

Grade Identification Size, Inches Recommended A563 Nut Washer
Plain Finish Hot-Dip or Mechanical Zinc Coated
Grade Style Grade Style
105 F1554 Grade 105 1/4 - 1-1/2 D1 Heavy Hex DH2 Heavy Hex F436
1-5/8 - 3 DH2 Heavy Hex DH2 Heavy Hex

1 A563 grade D nuts are rarely available. A563 grade DH or A194 grade 2H should be substituted.
2 The availability of A563 grade DH nuts in nominal sizes 1" and larger is very limited and generally available only on special orders of 50,000 or more. For smaller quantities, ASTM A194 grade 2H should be considered.