Steel 20Х3МВФЛ (ЭИ415Л)
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Steel 20Х3МВФЛ (ЭИ415Л)
20FL steel
20DHL steel
20GFL steel (20G1FL)
20GTL steel
20GSL steel
20GNFL steel
20GNMYL steel
20GNMFL steel
Designation
| Name | The value |
|---|---|
| Designation GOST Cyrillic | 20Х3МВФЛ |
| Designation GOST Latin | 20X3MBFL |
| Transliteration | 20H3MVFL |
| The chemical elements | 20Cr3MoWV |
| Name | The value |
|---|---|
| Designation GOST Cyrillic | ЭИ415Л |
| Designation GOST Latin | EI415L |
| Transliteration | EhI415L |
| The chemical elements | - |
Description
20Х3МВФЛ steel is used: for the manufacture of casting parts for gas turbines and axial compressors operating at temperatures up to +560 °C.
Note
Steel pearlitic class.
Standards
| Name | Code | Standards |
|---|---|---|
| Castings, steel | В82 | OST 108.961.04-80, TU 108.02.123-87 |
Chemical composition
| Standard | C | S | P | Mn | Cr | Si | Ni | Fe | Cu | V | Mo | W |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| OST 108.961.04-80 | 0.16-0.24 | ≤0.025 | ≤0.03 | 0.35-0.75 | 2.8-3.3 | 0.2-0.42 | ≤0.6 | The rest | ≤0.2 | 0.6-0.85 | 0.35-0.55 | 0.3-0.5 |
Fe is the basis.
Mechanical characteristics
| sT|s0,2, MPa | σB, MPa | d5, % | y, % | kJ/m2, кДж/м2 |
|---|---|---|---|---|
| Casting parts of gas turbines. Quenching in oil with 1030-1060 °C + vacation at 660-700 °C, air cooling | ||||
| ≥441 | ≥589 | ≥12 | ≥35 | 390 |
Description mechanical marks
| Name | Description |
|---|---|
| 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 |
| y | The relative narrowing |
| kJ/m2 | Toughness |
