Compare / A514 Grade Q vs S690QL
A514 Grade Q vs S690QL
ASTM A514/A514M · Steel
US quenched and tempered plate: 100 ksi (690 MPa) yield up to 2.5 in, 90 ksi above, 110–130 ksi tensile.
EN 10025-6 · Steel
Quenched and tempered plate: 690 MPa yield up to 50 mm, 770–940 MPa tensile, 30 J at −40 °C — about twice S355.
Close matchSame 690 MPa (100 ksi) minimum up to 2.5 in, but A514 has no standard impact test and its 90 ksi step comes at 63.5 mm, not 50 mm.
Mechanical
| Property | Condition | A514 Grade Q | S690QL | Difference |
|---|---|---|---|---|
| Yield strength ReH | t = 50 mm | ≥ 690MPa1 | ≥ 690MPa1 | same |
| t = 63.5 mm | ≥ 690MPa1 | ≥ 650MPa— | −5.8 % | |
| t = 100 mm | ≥ 620MPa1 | ≥ 650MPa— | +4.8 % | |
| t = 152 mm | ≥ 620MPa1 | ≥ 630MPa1 | +1.6 % | |
| Tensile strength Rm | t = 50 mm | 760–895MPa1 | 770–940MPa1 | +1.3 % |
| t = 63.5 mm | 760–895MPa1 | 760–930MPa— | same | |
| t = 100 mm | 690–895MPa1 | 760–930MPa— | +10 % | |
| t = 152 mm | 690–895MPa1 | 710–900MPa1 | +2.9 % | |
| Elongation after fracture A | t = 63.5 mm | ≥ 16%1 | ≥ 14%2 | −13 % |
| t = 152 mm | ≥ 14%1 | ≥ 14%2 | same |
Rows are matched by condition (thickness band, temperature, product form). A dash means the grade has no sourced value for that condition. Differences are S690QL relative to A514 Grade Q; for ranges the lower bound is compared.