Steel 8Х4В9Ф2 (ЭИ347; 8Х4В9МФ2)
Steel 110Kh18M (110Kh18M-SHD)
Steel 11X18M
Steel 60X13S (60X13S-SHD)
Steel 8Х4В9Ф2 (ЭИ347; 8Х4В9МФ2)
Steel 8X4M4V2F1 (DI43)
ShKh10 steel
ShKh15 steel
ShKh15S2G3 steel
ShKh15SG steel
ShKh15SM steel (DI36)
ShKh20SG steel
ShKh4 steel
Designation
| Name | The value |
|---|---|
| Designation GOST Cyrillic | 8Х4В9Ф2 |
| Designation GOST Latin | 8X4B9F2 |
| Transliteration | 8H4V9F2 |
| The chemical elements | 8Cr4W9V2 |
| Name | The value |
|---|---|
| Designation GOST Cyrillic | ЭИ347 |
| Designation GOST Latin | EI347 |
| Transliteration | EhI347 |
| The chemical elements | - |
| Name | The value |
|---|---|
| Designation GOST Cyrillic | 8Х4В9МФ2 |
| Designation GOST Latin | 8X4B9MF2 |
| Transliteration | 8H4V9MF2 |
| The chemical elements | 8Cr4W9MoV2 |
Description
8Х4В9Ф2 steel is used: for the manufacture of precision rolling bearings operating in harsh environments; heat resistant bearings; surpressing instrument bearings; bearings especially for critical applications.
Standards
| Name | Code | Standards |
|---|---|---|
| Sheets and stripes | В33 | TU 14-1-1968-77 |
| Sectional and shaped rolling | В32 | TU 14-1-2244-77, TU 14-1-2785-79 |
Chemical composition
| Standard | C | S | P | Mn | Cr | Si | Ni | Fe | V | Mo | W |
|---|---|---|---|---|---|---|---|---|---|---|---|
| TU 14-1-2244-77 | 0.7-0.8 | ≤0.03 | ≤0.03 | ≤0.4 | 4-4.6 | ≤0.4 | ≤0.35 | The rest | 1.4-1.7 | ≤0.3 | 8.5-9.5 |
| TU 14-1-2785-79 | 0.7-0.8 | ≤0.015 | ≤0.03 | ≤0.4 | 4-4.6 | ≤0.4 | ≤0.35 | The rest | 1.4-1.7 | ≤0.3 | 8.5-9.5 |
| TU 14-1-1968-77 | 0.7-0.8 | ≤0.03 | ≤0.035 | ≤0.4 | 4-4.6 | ≤0.4 | ≤0.35 | The rest | 1.3-1.7 | ≤0.3 | 8.5-9.5 |
Fe is the basis.
According to TU 14-1-1968-77, the chemical composition is given for steel grade 8X4V9F2 (EI347).
According to TU 14-1-2244-77, the chemical composition is given for steel grade 8Х4В9Ф2-Ш (ЭИ347-Ш). The presence of molybdenum in steel more than 0.30% to 0.60% is not a rejection sign if the tungsten in steel is reduced by the growth: 1% molybdenum is replaced by 2% tungsten. With the indicated replacement of tungsten in molybdenum steel, the letter "M" is added to the designation of the steel grade, i.e. 8Х4В9МФ2-Ш (ЭИ347М-Ш). In the hoists are allowed deviations from the content of elements in steel: chromium ± 0.10%, vanadium -0.10%.
According to TU 14-1-2785-79, the chemical composition is given for steel grade 8Х4В9Ф2-ШД (ЭИ347-ШД). Mass fraction of molybdenum from 0.30 to 0.60% is not a rejection sign provided that the mass fraction of tungsten in steel decreases by the amount of 1% of molybdenum replaces 2% of tungsten. With the indicated replacement of tungsten in steel with molybdenum, the brand designation will be 8X4V9MF2-SHD (EI347M-SHD).
According to TU 14-1-1968-77, the chemical composition is given for steel grade 8X4V9F2 (EI347).
According to TU 14-1-2244-77, the chemical composition is given for steel grade 8Х4В9Ф2-Ш (ЭИ347-Ш). The presence of molybdenum in steel more than 0.30% to 0.60% is not a rejection sign if the tungsten in steel is reduced by the growth: 1% molybdenum is replaced by 2% tungsten. With the indicated replacement of tungsten in molybdenum steel, the letter "M" is added to the designation of the steel grade, i.e. 8Х4В9МФ2-Ш (ЭИ347М-Ш). In the hoists are allowed deviations from the content of elements in steel: chromium ± 0.10%, vanadium -0.10%.
According to TU 14-1-2785-79, the chemical composition is given for steel grade 8Х4В9Ф2-ШД (ЭИ347-ШД). Mass fraction of molybdenum from 0.30 to 0.60% is not a rejection sign provided that the mass fraction of tungsten in steel decreases by the amount of 1% of molybdenum replaces 2% of tungsten. With the indicated replacement of tungsten in steel with molybdenum, the brand designation will be 8X4V9MF2-SHD (EI347M-SHD).
Technological properties
| Name | The value |
|---|---|
| Macrostructure and contamination | The macrostructure of bars on the other 14-1-2244-77 when checking on the etched Templeton and the turn should not have rychlosti, bundles, birdhouses, foreign inclusions, bubbles and cracks. The fracture must be uniform and fine-grained. In fracture of hot-rolled, forged and polished steel should not be sequin characteristic naphthalene fracture as in the initial state and after a single quenching with tempering (hardness not less than HRC 62). Carbide inhomogeneity of the steel depending on the cross section must not exceed: up to 40 mm is not more than 3.0 points; from 40 to 80 mm incl. - no more than 4.0 points; from 80 to 100 mm incl. - not more than 5.0 points. Pollution steel non-metallic inclusions shall not exceed: the oxides - no more than 1.5-2.0 points; sulphides - not more than 1.0 points; silicates, non-deformed (globules) is not more than 2.0 points. |
| Microstructure | Depth bezoperatsionnogo layer (ferrite + transition zone) rolled and forged steel shall not exceed per side: when the diameter or side of bar 20 to 30 mm - 0.5 mm; from 30 to 50 mm - 0,7 mm. Depth bezoperatsionnogo layer is controlled according to GOST 1763 by the method of Sadovsky (M2) of thermally treated samples according to the regime: Quenching in globaleval bath 1220-1240 °C (temperature of the first bath 190-210 °C, the temperature of the second bath 580-600 °C). |
| Redness | The red hardness of steel bars on the other 14-1-2244-77 must provide at least HRC 56. |
