Designation
| Name |
The value |
| Designation GOST Cyrillic |
ХН55ВМТКЮ |
| Designation GOST Latin |
XH55BMTKJu |
| Transliteration |
HN55VMTKYu |
| By chemical elements |
CrNi55ВCuTeCoAl |
| Name |
The value |
| Designation GOST Cyrillic |
ЭИ929 |
| Designation GOST Latin |
EI929 |
| Transliteration |
EhI929 |
| By chemical elements |
- |
Description
Alloy KHN55VMTKJU used: for the manufacture of turbine blades.
Note
High-temperature Nickel-based alloy.
The recommended maximum operating temperature for limited time +950 °C.
The temperature of beginning of intensive scaling in air +1050 °C.
Standards
| Name |
Code |
Standards |
| Bars and shapes |
В32 |
GOST 23705-79, TU 14-1-2970-80, 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 |
Co |
| GOST 5632-72 |
0.04-0.1 |
≤0.01 |
≤0.015 |
≤0.5 |
9-12 |
≤0.5 |
Rest |
≤5 |
≤0.3 |
3.6-4.5 |
0.2-0.8 |
≤0.02 |
1.4-2 |
4-6 |
4.5-6.5 |
12-16 |
Ni is the basis.
Mechanical properties
| Section, mm |
sT|s0,2, MPa |
σU, MPa |
d5, % |
y, % |
HB, MPa |
| Bars hot rolled and forged and according to GOST 23705-79. Annealing in air 1210-1230 °C (exposure 2 hours) + Heating to 1040-1060 (exposure 4 h), air cooling + Ageing at 840-860 °C (exposure 8 h), air cooling |
|
730-780 |
980-1180 |
8-12 |
9-15 |
285-341 |
|
390-490 |
570-770 |
8-28 |
12-38 |
- |
|
- |
340-440 |
17-25 |
20-30 |
- |
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 |
