Steel 16Х3МФЛ
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Steel 23ХГСС2МФЛ
Steel 23GNMFL
20KhNFL steel
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Steel 20Х3МВФЛ (ЭИ415Л)
20FL steel
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Designation
| Name | The value |
|---|---|
| Designation GOST Cyrillic | 16Х3МФЛ |
| Designation GOST Latin | 16X3MFL |
| Transliteration | 16H3MFL |
| The chemical elements | 16Cr3MoV |
Description
16Х3МФЛ steel is used: for the manufacture of castings of parts of stationary steam turbines operating at temperatures up to +350 °C and pressures up to 0.4 MPa.
Standards
| Name | Code | Standards |
|---|---|---|
| Castings with special properties (cast iron and steel) | В83 | OST 108.961.02-79 |
Chemical composition
| Standard | C | S | P | Mn | Cr | Si | Ni | Fe | Cu | V | Mo |
|---|---|---|---|---|---|---|---|---|---|---|---|
| OST 108.961.02-79 | 0.15-0.2 | ≤0.025 | ≤0.025 | 0.6-0.9 | 2.5-3 | 0.2-0.4 | ≤0.3 | The rest | ≤0.3 | 0.15-0.3 | 0.45-0.65 |
Fe is the basis.
Mechanical characteristics
| Section, mm | sT|s0,2, MPa | σB, MPa | d | y, % | kJ/m2, кДж/м2 | Brinell hardness number, MPa |
|---|---|---|---|---|---|---|
| Casting parts stationary steam turbines. Homogenization (normalization) at 1000-1030 °C + normalization at 970-1000 °C + vacation at 700-720 °C, air cooling | ||||||
| 150х170 | 430-550 | ≥600 | ≥14 | ≥35 | ≥392 | 160-220 |
| 100х150 | 430-550 | ≥600 | ≥14 | ≥35 | ≥392 | 160-220 |
| 60х150 | 430-550 | ≥600 | ≥14 | ≥35 | ≥392 | 160-220 |
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 |
| d | Elongation after rupture |
| y | The relative narrowing |
| kJ/m2 | Toughness |
