Hot Dip Galvanized High Tensile Stud Bolt Structural ASTM A325
Heavy Structural ASTM A325 hot dip galvanized heavy hex bolt
ASTM A325 is an ASTM International standard for heavy hex structural bolts, titled Standard Specification for Structural Bolts, Steel,
Heat Treated, 120/105 ksi Minimum Tensile Strength. The equivalent metric standard is ASTM A325M, which is titled Standard Specification for Structural Bolts, Steel, Heat Treated 830 MPa Minimum Tensile Strength.
SIZE: 1/4" - 1.1//2", M6 -M36. And 600mm Max length.
STANDARD: ASME B18.2.6
THREAD: ASME B1.1 , UNC, UNF, CLASS 2A
FINISHED: Plain, Zinc Plated(Clear/Blue/Yellow/Black), Black oxide, Nickel, Dacromet, H.D.G.
| A325 Types | |
| TYPE 1 | Medium carbon, carbon boron, or medium carbon alloy steel. |
| TYPE 2 | Withdrawn November 1991. |
| TYPE 3 | Weathering steel. |
| T | Fully threaded A325. (Restricted to 4 times the diameter in length) |
| M | Metric A325. |
| A325 Mechanical Properties | ||||
| Size | Tensile, ksi | Yield, ksi | Elong. %, min | RA %, min |
| 1/2-1" | 120 min | 92 min | 14 | 35 |
| 1.1/8"-1.1/2" | 105 min | 81 min | 14 | 35 |
| A325 Type 1 Chemical Properties | ||
| Heat Analysis | 120ksi, % | 150ksi, % |
| Carbon | 0.30 – 0.52 | 0.30 – 0.48* |
| Manganese | 0.60 min | 0.60 min |
| Phosphorus | 0.035 max | 0.035 max |
| Sulfur | 0.040 max | 0.040 max |
| Silicon | 0.15 – 0.30 | - |
| Boron | 0.003 max | 0.003 max |
| Copper | - | - |
| Nickel | - | - |
| Chromium | - | - |
| Molybdenum | - | - |
| A325 Type 3 Chemical Properties | ||||
| Heat Analysis | 120ksi, % Comp A | 120ksi, % Comp B | 120ksi, % Index | 150ksi, % Index |
| Carbon | 0.33 – 0.40 | 0.38 – 0.48 | 0.30 – 0.52 | 0.30 – 0.53 |
| Manganese | 0.90 – 1.20 | 0.70 – 0.90 | 0.60 min | 0.60 min |
| Phosphorus | 0.035 max | 0.035 max | 0.035 max | 0.035 max |
| Sulfur | 0.040 max | 0.040 max | 0.040 max | 0.040 max |
| Silicon | 0.15 – 0.30 | 0.30 – 0.50 | ||
| Copper | 0.25 – 0.45 | 0.20 – 0.40 | 0.20 – 0.60 | 0.20 – 0.60 |
| Nickel | 0.25 – 0.45 | 0.50 – 0.80 | 0.20 min | 0.20 min |
| Chromium | 0.45 – 0.65 | 0.50 – 0.80 | 0.20 min | 0.20 min |
| Molybdenum | 0.06 max | 0.10 min | 0.10 min | |
| A325 RECOMMENDED HARDWARE | |||
| Type | Finish | Nut | Washer |
| Type 1 | plain | A563 Grade C, C3, D, DH, DH3 | F436 Type 1 |
| galvanized | A563 Grade DH | F436 Type 1 | |
| Type 3 | plain | A563 Grade C3, DH3 | F436 Type 3 |
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