ASTM F1554 Specification
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Scope
ASTM F1544 is a standard material specification for straight, bent, headed, headless anchor bolts and all-thread anchor rods, made of carbon, medium carbon boron, alloy, or high-strength low alloy steel. ASTM F1554 covers anchors bolts in grade 36, 55 and 105, each designated with minimum ksi strength value. These anchors bolts or anchor rods are intended for anchoring structural supports to concrete foundations. Such structural supports include building columns, column supports for highway signs, street lighting and traffic signals, steel bearing plates, and similar applications.
Supplementary requirements are included to provide for grade 55 weldable steel, permanent manufacturers and grade identification marking, and impact properties for grade 55 and 105.
Grade Classification
| Type | Descriptions | Tensile Strength, ksi (MPa) | Yield Strength, min, ksi (MPa) | Diameter, Range, Inch. |
|---|---|---|---|---|
| Grade 36 | Low carbon, 36 ksi yield steel anchor bolts | 58 - 80 (400 - 558) | 36 (248) | 1/2 - 4 |
| Grade 55 | High strength, low alloy, 55 ksi yield steel anchor bolts | 75 - 95 (517 - 665) | 55 (380) | 1/2 - 4 |
| Grade 105 | Alloy, heat treated, high strength 105 ksi yield steel anchor bolts | 125 - 150 (862 - 1034) | 105 (724) | 1/2 - 3 |
Chemical Composition
Element |
Composition, % | |||
|---|---|---|---|---|
| Grade 36 | Grades 55 and 105 | |||
| Diameter up-to 3/4" Inclusive | Over 7/8" to 4" Inclusive | All Diameters | ||
Carbon, max |
Heat | 0.25 | 0.25 | - |
| Product | 0.28 | 0.28 | - | |
Manganese |
Heat | - | 0.60 - 0.90 | - |
| Product | - | 0.54 - 0.98 | - | |
Phosphorus, max |
Heat | 0.04 | 0.04 | 0.04 |
| Product | 0.05 | 0.05 | 0.048 | |
Sulfur, max |
Heat | 0.05 | 0.05 | 0.05 |
| Product | 0.06 | 0.06 | 0.058 | |
| Copper, min (when specified) |
Heat | 0.20 | 0.20 | 0.20 |
| Product | 0.18 | 0.18 | 0.18 | |
Mechanical Properties [Bar & Machined Specimen]
| Property | Grade 36 | Grade 55 | Grade 105 |
|---|---|---|---|
| Tensile Strength, ksi | 58 - 80 | 75 - 95 | 125 - 150 |
| Yield Strength, min, ksi (0.2% Offset) | 36 | 55 | 105 |
| Elongation in 8 inch, min, % [Note A] | 20 | 18 | 12 |
| Elongation in 2 inch, min, % [Note A] | 23 | 21 | 15 |
| Reduction of Area, min, % | 40 | 30 | 45 |
Elongation in 8 Inch applies to bars. Elongation in 2 inch applies to machined specimens.
Protective Coatings
- Zinc, Hot Dip or Mechanically Deposited:
- When zinc-coated anchor bolts are required, the purchaser shall specify the coating process, for example, hot dip, mechanically deposited, or no preference. When no preference is specified, the supplier may furnish bolts coated with either process. The supplier’s option is limited to one process per item, with no mixed processes in a lot.
- When hot-dip zinc coated anchor bolts are specified, the anchor bolts and nuts shall be zinc-coated in accordance with the requirements of Specification F2329/F2329M.
- When mechanically deposited zinc coated anchor bolts are provided, the anchor bolts and nuts shall be zinccoated in accordance with the requirements of Specification B695, Class 55.
- Unless otherwise specified, when zinc-coated washers are required, the washers shall be hot-dip zinc-coated in accordance with Specification F2329/F2329M, or mechanically deposited zinc coated in accordance with Specification B695, Class 55. The coating process for the washers need not be the same as that for the anchor bolts and nuts.
- Other Coatings:
- When indicated on the inquiry and purchase order, coatings other than those in 7.1 shall be as agreed upon by the purchaser and supplier.
Recommended Nuts & Washers
Anchor Bolts |
Recommended A563 Nuts | ||||
|---|---|---|---|---|---|
| Plain Finish | Hot-Dip or Mechanical Zinc Coated | ||||
| Bolt Grade | Diameter, Inch | Grade | Style | Grade | Style |
| Grade 36 | 1/2 - 1 1/2 | A | Hex | A | Hex |
| Over 1-1/2 | A | Heavy Hex | A | Heavy Hex | |
| Grade 55 | 1/2 - 1 1/2 | A | Hex | A | Heavy Hex |
| Over 1-1/2 - 4 | A | Heavy Hex | A | Heavy Hex | |
| Grade 105 | All | DH | Heavy Hex | DH | Heavy Hex |
Reference Standards
| Reference Standards | Description |
|---|---|
| ASTM A194 | Specification for Carbon, Alloy, and Stainless Steel Nuts for High Pressure or High Temperature Service, or Both |
| ASTM A194M | Specification for Carbon, Alloy, and Stainless Steel Nuts for High Pressure or High Temperature Service, or Both |
| ASTM A563 | Specification for Carbon and Alloy Steel Nuts |
| ASTM B695 | Specification for Coatings of Zinc Mechanically Deposited on Iron and Steel |
| ASTM F436 | Specification for Hardened Steel Washers (Metric) |
| ASTM F2329 | Specification for Zinc Coating, Hot-Dip for Carbon and Alloy Steel Bolts, Screws, Washers, Nuts, and Special Threaded Fasteners |
| ASTM F2329M | Specification for Zinc Coating, Hot-Dip for Carbon and Alloy Steel Bolts, Screws, Washers, Nuts, and Special Threaded Fasteners |
| ASME B18.2.1 | Square, Hex, Heavy Hex, and Askew Head Bolts and Hex, Heavy Hex, Hex Flange, Lobed Head, and Lag Screws (Inch Series) |
| ASME B18.2.2 | Square and Hex Nuts |
| ASME B1.1 | Unified Inch Screw Threads (UN and UNR Thread Form) |