Compare / С355 vs S355
С355 vs S355
GOST 27772-2015 · Steel
Russian strength class for building steel: 355 MPa yield from 8 to 16 mm, 470 MPa minimum 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.
Close matchSame yield steps as S355 up to 100 mm (355/345/335/325/315 MPa) per GOST 27772 Table 4; tensile 470 MPa minimum with no upper limit, and the table starts at 8 mm.
Mechanical
| Property | Condition | С355 | S355 | Difference |
|---|---|---|---|---|
| Yield strength ReH | t = 16 mm | ≥ 355MPa1 | ≥ 355MPa3 | same |
| t = 40 mm | ≥ 345MPa1 | ≥ 345MPa3 | same | |
| t = 60 mm | ≥ 335MPa1 | ≥ 335MPa2 | same | |
| t = 63 mm | ≥ 325MPa1 | ≥ 335MPa2 | +3.1 % | |
| t = 80 mm | ≥ 325MPa1 | ≥ 325MPa3 | same | |
| t = 100 mm | ≥ 315MPa1 | ≥ 315MPa3 | same | |
| t = 150 mm | ≥ 295MPa1 | ≥ 295MPa2 | same | |
| t = 160 mm | ≥ 295MPa1 | ≥ 285MPa1 | −3.4 % | |
| Tensile strength Rm | t = 3 mm | — | 510–680MPa3 | |
| t = 60 mm | ≥ 470MPa1 | 470–630MPa5 | same | |
| t = 100 mm | ≥ 460MPa1 | 470–630MPa5 | +2.2 % | |
| t = 150 mm | ≥ 460MPa1 | 450–600MPa2 | −2.2 % | |
| t = 160 mm | ≥ 460MPa1 | 450–600MPa1 | −2.2 % | |
| Elongation after fracture A | t = 40 mm | ≥ 21%1 | ≥ 22%1 | +4.8 % |
| t = 63 mm | ≥ 21%1 | ≥ 21%1 | same | |
| t = 100 mm | ≥ 21%1 | ≥ 20%1 | −4.8 % | |
| t = 150 mm | ≥ 21%1 | ≥ 18%— | −14 % | |
| t = 160 mm | ≥ 21%1 | ≥ 17%— | −19 % |
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 С355; for ranges the lower bound is compared.