Compare / F3125 Grade A325 vs Property class 8.8
F3125 Grade A325 vs Property class 8.8
ASTM F3125/F3125M · Steel
US heavy-hex structural bolt: 120 ksi (827 MPa) tensile, 92 ksi (634 MPa) yield. A325 now lives inside F3125.
ISO 898-1 · Steel
The everyday structural bolt: 800 MPa tensile, 640 MPa yield (nominal). Minimums rise above 16 mm diameter.
Close match120 ksi (827 MPa) tensile and 92 ksi (634 MPa) yield, close to 8.8 above 16 mm; inch threads.
Mechanical
| Property | Condition | F3125 Grade A325 | Property class 8.8 | Difference |
|---|---|---|---|---|
| Elongation after fracture A | — | ≥ 14%1 | ≥ 12%2 | −14 % |
Rows are matched by condition (thickness band, temperature, product form). A dash means the grade has no sourced value for that condition. Differences are Property class 8.8 relative to F3125 Grade A325; for ranges the lower bound is compared.