Designation
| Name |
The value |
| Designation GOST Cyrillic |
ХН75ВМЮ |
| Designation GOST Latin |
XH75BMJu |
| Transliteration |
HN75VMYu |
| By chemical elements |
CrNi75ВCuAl |
| Name |
The value |
| Designation GOST Cyrillic |
ЭИ827 |
| Designation GOST Latin |
EI827 |
| Transliteration |
EhI827 |
| By chemical elements |
- |
Description
Alloy KHN75VMJU used: for the manufacture of turbine blades.
Note
High-temperature Nickel-based alloy.
The recommended maximum operating temperature for a long time +800 °C.
The temperature of beginning of intensive scaling in air +1080 °C.
Standards
| Name |
Code |
Standards |
| Bars and shapes |
В32 |
GOST 23705-79, TU 14-11-245-88 |
| Classification, nomenclature and General rules |
В30 |
GOST 5632-72 |
| Blanks. Of the workpiece. Slabs |
В31 |
OST 3-1686-90 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
Al |
V |
B |
Ti |
Mo |
W |
Ce |
| GOST 5632-72 |
0.12 |
≤0.01 |
≤0.015 |
≤0.4 |
9-11 |
≤0.4 |
Rest |
≤5 |
≤0.3 |
4-4.6 |
≤0.7 |
0.01-0.02 |
≤0.2 |
5-6.5 |
4.5-5.5 |
≤0.01 |
Ni is the basis.
Mechanical properties
| Section, mm |
sT|s0,2, MPa |
σU, MPa |
d5, % |
y, % |
HB, MPa |
| Rolled steel. Annealing in air |
| 25 |
550-690 |
≥1000 |
13-25 |
15-25 |
- |
| Bars hot rolled and forged and according to GOST 23705-79. Annealing in air 1190-1210 °C (aging 6-8 h) + Aging at 900-950 °C (exposure 8 h), air cooling |
|
- |
- |
- |
- |
255-321 |
|
- |
≥590 |
≥6 |
≥9 |
- |
Description mechanical marks
| Name |
Description |
| sT|s0,2 |
Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2% |
| σU |
Limit short-term strength |
| d5 |
Elongation after rupture |
| y |
The relative narrowing |
| HB |
Brinell hardness number |
