Steel S440
Designation
| Name |
The value |
| Designation GOST Cyrillic |
С440 |
| Designation GOST Latin |
C440 |
| Transliteration |
S440 |
| The chemical elements |
- |
Description
Steel S440 is used: for the manufacture of hot-rolled structural shapes (angles, I-beams, channels), sheet, universal broadband rental and roll-formed profiles designed for construction of steel structures with welded and other connections.
Standards
| Name |
Code |
Standards |
| Classification, nomenclature and general norms |
В20 |
GOST 27772-88 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
N |
As |
V |
| GOST 27772-88 |
≤0.2 |
≤0.04 |
≤0.035 |
1.3-1.7 |
≤0.4 |
≤0.6 |
≤0.3 |
The rest |
≤0.3 |
0.015-0.025 |
≤0.08 |
0.08-0.14 |
Fe is the basis.
According to GOST 27772-88, the mass fraction of arsenic does not exceed 0.15% in the smelting of steel from Kerch ore, while the mass fraction of phosphorus should not be more than 0.030%. At the request of the consumer in steel, the mass fraction of phosphorus should not be more than 0.030%, and sulfur - not more than 0.035%.
Mechanical characteristics
| Section, mm |
sT|s0,2, MPa |
σB, MPa |
d5, % |
kJ/m2, кДж/м2 |
| Plates and wide universal rental in the state of delivery (KCU-70 °C) |
| 30-50 |
≥410 |
≥570 |
≥20 |
≥294 |
| 4-30 |
≥440 |
≥590 |
≥20 |
≥294 |
Description mechanical marks
| Name |
Description |
| Section |
Section |
| sT|s0,2 |
Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2% |
| σB |
Limit short-term strength |
| d5 |
Elongation after rupture |
| kJ/m2 |
Toughness |
Technological properties
| Name |
The value |
| Weldability |
without restrictions |
