Steel D40
Steel E
B Steel
Steel D27
D27S steel
Steel D32
D36 steel
Steel D40
D40S steel
A40 steel
E27 Steel
E27S Steel
E32 steel
E36 Steel
E40 steel
E40S steel
X18G13AN4 steel
Steel D
Steel 40G18Yu3F (Yu3F)
08Cr18Ni10Gt steel
Steel 12G2MFT
12X18H10GT steel
Steel 18Х20Н13 (ЭИ997)
Steel 25KhGMNTBA (25KhG2MNTBA)
Steel 26G2STa
Steel 28ХГНМФД
38Kh3M1F1A steel
A40S steel
Steel 45Г17Ю3 (Ю3; ЭИ839)
Steel 50G23Kh4FV7 (48VNNK-2)
Steel 80G20F2Yu (F2)
Steel A
A27S steel
A32 steel
A36 steel
Designation
| Name | The value |
|---|---|
| Designation GOST Cyrillic | D40 |
| Designation GOST Latin | D40 |
| Transliteration | D40 |
| The chemical elements | D40 |
Description
D40 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 stripes | В23 | GOST 5521-93 |
| Sheets and stripes | В33 | TU 14-1-4779-90, TU 14-1-4839-90 |
Chemical composition
| Standard | C | S | P | Mn | Cr | Si | Ni | Fe | Cu | N | As | Al | V | Mo | Nb |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GOST 5521-93 | ≤0.18 | ≤0.035 | ≤0.035 | 0.9-1.6 | ≤0.2 | 0.15-0.5 | ≤0.4 | The rest | ≤0.35 | ≤0.008 | ≤0.08 | 0.015-0.06 | 0.05-0.1 | ≤0.08 | 0.02-0.05 |
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%. Microalloying of steel niobium and vanadium is produced jointly or by one of them.
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%. Microalloying of steel niobium and vanadium is produced jointly or by one of them.
Mechanical characteristics
| Section, mm | sT|s0,2, MPa | σB, MPa | d5, % |
|---|---|---|---|
| Castings according to GOST 2685-75 | |||
| ≥390 | 510-650 | ≥20 | |
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 |
