Compare / Property class 8.8 vs F3125 Grade A325
Property class 8.8 vs F3125 Grade A325
ISO 898-1 · Steel
The everyday structural bolt: 800 MPa tensile, 640 MPa yield (nominal). Minimums rise above 16 mm diameter.
ASTM F3125/F3125M · Steel
US heavy-hex structural bolt: 120 ksi (827 MPa) tensile, 92 ksi (634 MPa) yield. A325 now lives inside F3125.
Close match120 ksi (827 MPa) tensile and 92 ksi (634 MPa) yield, close to 8.8 above 16 mm; inch threads.
Mechanical
| Property | Condition | Property class 8.8 | F3125 Grade A325 | Difference |
|---|---|---|---|---|
| Elongation after fracture A | — | ≥ 12%2 | ≥ 14%1 | +17 % |
Rows are matched by condition (thickness band, temperature, product form). A dash means the grade has no sourced value for that condition. Differences are F3125 Grade A325 relative to Property class 8.8; for ranges the lower bound is compared.