С355
Russian strength class for building steel: 355 MPa yield from 8 to 16 mm, 470 MPa minimum tensile.
Compared with S355 on its equivalents table.
- Yield strength ReH
- ≥ 345MPaFrom the standard16–40 mm
- Tensile strength Rm
- ≥ 470MPaFrom the standard8–60 mm
- Elongation after fracture A
- ≥ 21%From the standard8–160 mm
All values
Strength
Yield strength ReH
Upper yield strength guaranteed by the product standard (minimum).
| Condition | Value | Evidence |
|---|---|---|
| ≥ 355MPa | From the standard | |
| ≥ 345MPa | From the standard | |
| ≥ 335MPa | From the standard | |
| ≥ 325MPa | From the standard | |
| ≥ 315MPa | From the standard | |
| ≥ 295MPa | From the standard |
Tensile strength Rm
Ultimate tensile strength. Product standards give a range or a minimum.
| Condition | Value | Evidence |
|---|---|---|
| ≥ 470MPa | From the standard | |
| ≥ 460MPa | From the standard |
Ductility
Elongation after fracture A
Minimum elongation; depends on gauge length and test direction.
| Condition | Value | Evidence |
|---|---|---|
| ≥ 21% | From the standard |
Listed as equivalent to
- S355 (EN 10025-2:2019) — Same 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.
Not yet verified for this grade
- Impact values (KCU/KCV) by temperature
- Values for sections (other tables of GOST 27772)
Missing on purpose: a value appears here only once a public source states it.
Sources here are public pages that reproduce GOST 27772-2015. For design and acceptance, the standard edition named in your specification and the inspection certificate (EN 10204 3.1) of the delivered product take precedence.