Steel E40S
Designation
| Name | The value |
|---|---|
| Designation GOST Cyrillic | E40S |
| Designation GOST Latin | E40S |
| Transliteration | E40S |
| By chemical elements | E40S |
Description
E40S steel is used: for the production of plate, universal broadband, bandpass and shaped rolled, intended for the manufacture of shells and other welded structures of ships and floating structures.
Note
High-strength steel.
Standards
| Name | Code | Standards |
|---|---|---|
| Sheets and strips | В23 | GOST 5521-93 |
Chemical composition
| Standard | C | S | P | Mn | Cr | Si | Ni | Fe | Cu | N | As | Al |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GOST 5521-93 | ≤0.12 | ≤0.035 | ≤0.035 | 0.5-0.8 | 0.6-0.9 | 0.8-1.1 | 0.5-0.8 | Rest | 0.4-0.6 | ≤0.008 | ≤0.08 | 0.015-0.06 |
Fe is the basis.
According to GOST 5521-93, the mass fraction of nitrogen is allowed up to 0.012%, provided that KCU ≥ 294 kJ / m 2 is provided in the rolled product after mechanical aging at 20 ° C. It is allowed in place of aluminum soluble in acids, to determine its total mass fraction, while the rate increases by 0.005%. Partial replacement of aluminum with titanium is allowed: the total mass fraction of aluminum and titanium should be at least 0.015%, the mass fraction of titanium - not more than 0.020%, the mass fraction of aluminum soluble in acids - not less than 0.005%. The microalloying of niobium and (or) vanadium steel to 0.05 and 0.10%, respectively, or other grain refining admixtures is permitted in agreement with the consumer. Deviation in copper is ± 0.05%.
According to GOST 5521-93, the mass fraction of nitrogen is allowed up to 0.012%, provided that KCU ≥ 294 kJ / m 2 is provided in the rolled product after mechanical aging at 20 ° C. It is allowed in place of aluminum soluble in acids, to determine its total mass fraction, while the rate increases by 0.005%. Partial replacement of aluminum with titanium is allowed: the total mass fraction of aluminum and titanium should be at least 0.015%, the mass fraction of titanium - not more than 0.020%, the mass fraction of aluminum soluble in acids - not less than 0.005%. The microalloying of niobium and (or) vanadium steel to 0.05 and 0.10%, respectively, or other grain refining admixtures is permitted in agreement with the consumer. Deviation in copper is ± 0.05%.
Mechanical properties
| Section, mm | sT|s0,2, MPa | σU, MPa | d5, % |
|---|---|---|---|
| Castings according to GOST 2685-75 | |||
| ≥390 | 530-690 | ≥19 | |
Description mechanical marks
| Name | Description |
|---|---|
| sT|s0,2 | Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2% |
| σU | Limit short-term strength |
| d5 | Elongation after rupture |
