ASTM A325 Bolts
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ASTM A325 Bolts is an ASTM International standard for substantial hex basic bolts, titled Standard Specification for Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength. It characterizes mechanical properties for bolts that extend from 1⁄2 to 1-1⁄2 in breadth. The equal metric standard is ASTM A325 BoltsM, which is titled Standard Specification for Structural Bolts, Steel, Heat Treated 830 MPa Minimum Tensile Strength. It characterizes mechanical properties for sizes M12– 36. There is additionally a T variant, which is utilized to allude to completely strung jolts. This is a standard set by the norms association ASTM International, a willful gauges improvement associations that sets specialized benchmarks for materials, items, frameworks, and administrations.
ASTM A325 Bolts cover Specification for substantial Hex Bolts for Structural Applications including Medium carbon, carbon boron, or medium carbon combination steel review Type 1 and Weathering steel Type 3.TorqBolt gives extra covering as required.We Also Offer Customized string Length for these Specification jolts.
These sorts of bolts are intended to be fixed to close to their confirmation quality, so as to make noteworthy jolt pressure. The standard expresses that the bolts must be fixed to in any event 70% of the rigidity. These bolts utilize indistinguishable material from their regular cousins (ASTM F568M for metric jolts), yet have a thicker and more extensive go to all the more successfully appropriate the heap. This adjusted geometry is regularly alluded to as overwhelming hex geometry. ASTM 325 jolts can be viewed as proportional to Grade 8.8 jolts as indicated by ASTM F568M.
ASTM A325 Bolts Specification
ASTM A325 Bolts is an ASTM International standard for overwhelming hex basic jolts, titled Standard Specification for Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength. It characterizes mechanical properties for jolts that extend from 1⁄2 to 1-1⁄2 in measurement. The proportional metric standard is ASTM A325 BoltsM, which is titled Standard Specification for Structural Bolts, Steel, Heat Treated 830 MPa Minimum Tensile Strength. It characterizes mechanical properties for sizes M12– 36. There is additionally a T variant, which is utilized to allude to completely strung jolts. This is a standard set by the norms association ASTM International, a deliberate principles improvement associations that sets specialized measures for materials, items, frameworks, and services.
Chemical Composition (type 1)
| Element | ||||
| Product Analysis % | ||||
| Carbon Steel | Carbon Boron Steel | Alloy Steel | Alloy Boron Steel | |
| Carbon | 0.28 - 0.55 | 0.28 - 0.55 | 0.28 - 0.55 | 0.28 - 0.55 |
| Manganese | 0.57 min | 0.57 min | 0.57 min | 0.57 min |
| Phosphorus | 0.048 max | 0.048 max | 0.040 max | 0.040 max |
| Sulfur | 0.058 max | 0.058 max | 0.045 max | 0.045 max |
| Silicon | 0.13 - 0.32 | 0.08 - 0.32 | 0.13 - 0.37 | 0.13 - 0.37 |
| Boron | -- | 0.0005 - 0.003 | -- | 0.0005 - 0.003 |
Chemical Composition (type 3)
| Element | ||||||
| Product Analysis % | ||||||
| A | B | C | D | E | F | |
| Carbon | 0.31 - 0.42 | 0.36 - 0.50 | 0.14 - 0.26 | 0.14 - 0.26 | 0.18 - 0.27 | 0.19 - 0.26 |
| Manganese | 0.86 - 1.24 | 0.67 - 0.93 | 0.76 - 1.39 | 0.36 - 1.24 | 0.56 - 1.04 | 0.86 - 1.24 |
| Phosphorus | 0.040 max | 0.040 max | 0.040 max | 0.040 max | 0.040 max | 0.040 max |
| Sulfur | 0.045 max | 0.045 max | 0.045 max | 0.045 max | 0.045 max | 0.045 max |
| Silicon | 0.13 - 0.37 | 0.25 - 0.55 | 0.13 - 0.37 | 0.20 - 0.55 | 0.13 - 0.37 | 0.13 - 0.37 |
| Copper | 0.22 - 0.48 | 0.17 - 0.43 | 0.17 - 0.53 | 0.27 - 0.53 | 0.27 - 0.63 | 0.17 - 0.43 |
| Nickel | 0.22 - 0.48 | 0.47 - 0.83 | 0.22 - 0.53 | 0.47 - 0.83 | 0.27 - 0.63 | 0.17 - 0.43 |
| Chromium | 0.42 - 0.68 | 0.47 - 0.83 | 0.27 - 0.53 | 0.45 - 1.05 | 0.55 - 0.95 | 0.42 - 0.68 |
| Vanadium | -- | -- | 0.010 min | -- | -- | -- |
| Molybdenum | -- | 0.07 max | -- | 0.11 max | -- | -- |
| Titanium | -- | -- | -- | 0.06 max | -- | -- |
ASTM Standards Of ASTM A325 Bolts
| Grade | Class | |||||
| Type 1 | Carbon Steel, Carbon Boron Steel, Alloy Steel or Alloy Boron Steel | |||||
| Type 2 | Withdrawn | |||||
| Type 3 | A | B | C | D | E | F |
Mechanical Properties (Metric)
| Nominal Diameter, mm | Tensile Strength, min, Mpa | Yield Strength, min, Mpa | Elongation in 4D, min, % | Reduction in Area, min, % |
| M12 to M36, Inclusive | 830 | 660 | 14 | 35 |
Mechanical Requirement (Imperial)
| Nominal Diameter, mm | Tensile Strength, min, ksi | Yield Strength, min, ksi | Elongation in 4D, min, % | Reduction in Area, min, % |
| 1/2" to 1", Inclusive | 120 | 92 | 14 | 35 |
| Over 1 to 1-1/2" | 105 | 81 | 14 | 35 |
ASTM A325 Bolts Industrial Applications
- ASTM A325 Bolts uses in Aircraft Exhaust Manifolds
- ASTM A325 Bolts uses in Off-Shore Oil Drilling Companies
- ASTM A325 Bolts uses in Power Generation
- ASTM A325 Bolts uses in Petrochemicals
- ASTM A325 Bolts uses in Gas Processing
- ASTM A325 Bolts uses in Specialty Chemicals
- ASTM A325 Bolts uses in Pharmaceuticals
- ASTM A325 Bolts uses in Pharmaceutical Equipment
- ASTM A325 Bolts uses in Spiral Welded tube for burner pipes and flues
- ASTM A325 Bolts uses in Sea Water Equipment
- ASTM A325 Bolts uses in Heat Exchangers
ASTM A325 Bolts Bolt Torque Chart
| Bolt Size | TPI | Tension MIN |
Tension MAX |
Tightening Torque Range (ft lbs) (Min-Max) Galv + Wax |
Tightening Torque Range (ft lbs) (Min-Max) Plain |
|---|---|---|---|---|---|
| 1/2" | 13 | 12,000 | 14,000 | 50 - 58 | 100 - 117 |
| 5/8" | 11 | 19,000 | 23,000 | 99 - 120 | 198 - 240 |
| 3/4" | 10 | 28,000 | 34,000 | 175 - 213 | 350 - 425 |
| 7/8" | 9 | 39,000 | 47,000 | 284 - 343 | 569 - 685 |
| 1" | 8 | 51,000 | 61,000 | 425 - 508 | 850 - 1,017 |
| 1 1/8" | 7 | 56,000 | 67,000 | 525 - 625 | 1,050 - 1,256 |
| 1 1/4" | 7 | 71,000 | 85,000 | 740 - 885 | 1,479 - 1,771 |
| 1 3/8" | 6 | 85,000 | 102,000 | 974 - 1,169 | 1,948 - 2,338 |
| 1 1/2" | 6 | 103,000 | 124,000 | 1,288 - 1,550 | 2,575 - 3,100 |
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