Alloy ХН51МТЮКФР (ЭП220)
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Alloy KhN51MTYUKFR (EP220)
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Designation
| Name | The value |
|---|---|
| Designation GOST Cyrillic | ХН51МТЮКФР |
| Designation GOST Latin | XH51MTJuKFP |
| Transliteration | HN51MTYuKFR |
| The chemical elements | CrNi51CuTeAlCoPHg |
| Name | The value |
|---|---|
| Designation GOST Cyrillic | ЭП220 |
| Designation GOST Latin | EP220 |
| Transliteration | EhP220 |
| The chemical elements | - |
Description
Alloy ХН51МТЮКФР used: for the manufacture of hot-rolled bars; different details of responsible use of power plant engineering, engine building, turbine.
Note
High-temperature Nickel-based alloy.
Standards
| Name | Code | Standards |
|---|---|---|
| Sectional and shaped rolling | В32 | GOST 23705-79, TU 14-1-223-72, TU 14-1-402-72 |
Chemical composition
| Standard | C | S | P | Mn | Cr | Si | Ni | Fe | Cu | Al | V | B | Ti | Mo | W | Co |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GOST 23705-79 | ≤0.08 | ≤0.009 | ≤0.015 | ≤0.5 | 9-12 | ≤0.5 | The rest | ≤3 | ≤0.07 | 3.9-4.8 | 0.2-0.8 | ≤0.02 | 2.2-2.9 | 5-8 | 5-7 | 14-16 |
Ni is the basis.
According to GOST 23705-79 the chemical composition is given for the alloy ХН51ВМТЮКФР-ВД. Boron is introduced into the metal by calculation and chemical analysis is not determined. Mass fraction of residual elements and deviations in chemical composition - in accordance with GOST 5632.
According to TU 14-1-402-72, the chemical composition is given for the alloy ХН51МТЮКФР-ВД.
According to TU 14-1-223-72 in the alloy, the presence of antimony, tin, bismuth and arsenic is allowed for no more than 1 point of the spectral analysis scale. Boron is introduced into the metal by calculation and chemical analysis is not determined.
According to GOST 23705-79 the chemical composition is given for the alloy ХН51ВМТЮКФР-ВД. Boron is introduced into the metal by calculation and chemical analysis is not determined. Mass fraction of residual elements and deviations in chemical composition - in accordance with GOST 5632.
According to TU 14-1-402-72, the chemical composition is given for the alloy ХН51МТЮКФР-ВД.
According to TU 14-1-223-72 in the alloy, the presence of antimony, tin, bismuth and arsenic is allowed for no more than 1 point of the spectral analysis scale. Boron is introduced into the metal by calculation and chemical analysis is not determined.
Mechanical characteristics
| Section, mm | σB, MPa | d5, % | y, % | Brinell hardness number, MPa |
|---|---|---|---|---|
| Bars hot rolled and forged and according to GOST 23705-79, THE 14-1-223-72. Annealing in air 1210-1230 °C (exposure 4 h) + Heating to 1040-1060 (exposure 4 h), air cooling + Ageing at 940-960 °C (exposure 2 hours), air cooling | ||||
| - | - | - | 285-341 | |
| ≥490 | ≥6 | ≥9 | - | |
Description mechanical marks
| Name | Description |
|---|---|
| Section | Section |
| σB | Limit short-term strength |
| d5 | Elongation after rupture |
| y | The relative narrowing |
