F1554 is the ASTM International specification for anchor bolts Until the ASTM F1554 specification was introduced anchor bolts did not have a specification of their own. They were most commonly specified under ASTM A307 (Carbon Steel Bolts and Studs), or simply as ASTM A36 (actually a material specification, not a bolt specification).
Three grades are covered under F1554.
We stock many sizes with a hot-dip galvanized finish.
F1554 is the ASTM International specification for anchor bolts
Until the ASTM F1554 specification was introduced anchor bolts did not have a specification of their own. They were most commonly specified under ASTM A307 (Carbon Steel Bolts and Studs), or simply as ASTM A36 (actually a material specification, not a bolt specification).
Three grades are covered under F1554.
We stock many sizes with a hot-dip galvanized finish.
F1554 Grades
F1554 Grade 36:
Low carbon, 36 ksi yield steel anchor bolts.
These roughly correspond to the previous ASTM A307 or to ASTM A36.
F1554 Grade 55 :
Medium strength, low alloy, 55 ksi yield steel anchor bolts
F1554 Grade 105:
105 Alloy, heat treated, high strength 105 ksi yield steel anchor bolts.
Roughly equivalent to a SAE Grade 5 Bolt or ASTM A449, A325, A354 Grade BC, A193 B7.
F1554 MECHANICAL PROPERTIES | |||||||
|---|---|---|---|---|---|---|---|
| Grade | Marking | Size | Tensile, ksi | Yield, ksi min | Yield, MPa min | Elong. % min | RA % min |
| 36 | BLUE | 1/2" - 4" | 58 - 80 | 36 | 248 | 23 | 40 |
| 55 | YELLOW | 1/2" - 2" | 75 - 95 | 55 | 380 | 21 | 30 |
| 2-1/4" - 2-1/2" | 75 - 95 | 55 | 380 | 21 | 22 | ||
| 2-3/4"- 3" | 75 - 95 | 55 | 380 | 21 | 20 | ||
| 3-1/4" - 4" | 75 - 95 | 55 | 380 | 21 | 18 | ||
| 105 | RED | 1/2" - 3" | 125 - 150 | 105 | 724 | 15 | 45 |
F1554 CHEMICAL PROPERTIES | ||||
|---|---|---|---|---|
| Element | Grade 36 | Grades 55 & 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% | 0.04% |
| Sulfur, max | 0.05% | 0.05% | 0.05% | 0.05% |
| Copper, min (when specified) | 0.20% | 0.20% | 0.20% | 0.20% |
F1554 RECOMMENDED HARDWARE | |||||||
|---|---|---|---|---|---|---|---|
| Grade | Identification | Size Inches | Recommended A563 Nut | Washer | |||
| Plain Finish | Hot-Dip or Mechanical Zinc Coated | ||||||
| Grade | Style | Grade | Style | ||||
| 36 | BLUE | 1/2" - 1-1/2" | A | Hex | A | Hex | F436 |
| 1-5/8" - 4" | A | Heavy Hex | A | Heavy Hex | |||
| 55 | YELLOW | 1/2" - 1-1/2" | A | Hex | A | Heavy Hex | F436 |
| 1-5/8" - 4" | A | Heavy Hex | A | Heavy Hex | |||
| 105 | RED | 1/2" - 1-1/2" | D, DH or 2H | Heavy Hex | DH or 2H | Heavy Hex | F436 |
| 1-5/8" - 4" | DH or 2H | Heavy Hex | DH or 2H | Heavy Hex | |||
Note: A194 grade 2H nuts are much more readily available than A563 grade D or A5663 grade DH.
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 +40⁰F (+5⁰C) 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.
S5: Charpy Impact requirements at -20⁰F (-29⁰C) 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.
TIPS & FAQ:
Remember, when specifying F1554 the specification alone is not enough information. There are three grade classifications contained in the F1554 specification; grade 36, grade 55 and grade 105.
Q: Can I weld to a F1554 anchor bolt?
A: The answer is dependent upon the grade of the anchor bolt.
Grade 36 - Yes
Grade 55 - You can only be sure of welding compatibility if the grade 55 anchor bolt is supplied with the "S1" supplementary requirement (see chart above).
Grade 105 - No, these anchor bolts are a heat-treated, medium carbon alloy steel and therefore are not considered weldable. We regularly receive drawings incorrectly specifying hex nuts be installed and tack welded in place on grade 105 anchor bolts. This is not considered acceptable as it may result in brittleness and/or modification of the strength of the actual anchor bolt.
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