Compare / A572 Grade 50 vs S355
A572 Grade 50 vs S355
ASTM A572/A572M · Steel
The common US high-strength structural plate: 50 ksi (345 MPa) yield, 65 ksi (450 MPa) tensile.
EN 10025-2:2019 · Steel
Europe's workhorse structural steel: 355 MPa minimum yield up to 16 mm, 470–630 MPa tensile from 3 to 100 mm.
ApproximateMinimum yield 345 MPa (50 ksi), 10 MPa below S355; minimum tensile 450 MPa (65 ksi) with no upper limit. No impact test unless ordered as a supplement.
Mechanical
| Property | Condition | A572 Grade 50 | S355 | Difference |
|---|---|---|---|---|
| Yield strength ReH | t = 16 mm | ≥ 345MPa3 | ≥ 355MPa3 | +2.9 % |
| t = 40 mm | ≥ 345MPa3 | ≥ 345MPa3 | same | |
| t = 63 mm | ≥ 345MPa3 | ≥ 335MPa2 | −2.9 % | |
| t = 80 mm | ≥ 345MPa3 | ≥ 325MPa3 | −5.8 % | |
| t = 100 mm | ≥ 345MPa3 | ≥ 315MPa3 | −8.7 % | |
| t = 101.6 mm | ≥ 345MPa3 | ≥ 295MPa2 | −14 % | |
| Tensile strength Rm | t = 3 mm | ≥ 450MPa3 | 510–680MPa3 | +13 % |
| t = 100 mm | ≥ 450MPa3 | 470–630MPa5 | +4.4 % | |
| t = 150 mm | ≥ 450MPa3 | 450–600MPa2 | same | |
| t = 250 mm | ≥ 450MPa3 | 450–600MPa1 | same | |
| t = 400 mm | ≥ 450MPa3 | 450–600MPa1 | 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 S355 relative to A572 Grade 50; for ranges the lower bound is compared.