Designation
| Name |
The value |
| Designation GOST Cyrillic |
ХН70ВМТЮ |
| Designation GOST Latin |
XH70BMTJu |
| Transliteration |
HN70VMTYu |
| By chemical elements |
CrNi70ВCuTeAl |
| Name |
The value |
| Designation GOST Cyrillic |
ЭИ617 |
| Designation GOST Latin |
EI617 |
| Transliteration |
EhI617 |
| By chemical elements |
- |
Description
Alloy KHN70VMTJU used: for the manufacture of hot-rolled bars; working and nozzle blades of gas turbines.
Note
High-temperature Nickel-based alloy.
The recommended maximum operating temperature for a long time +850 °C.
The temperature of beginning of intensive scaling in air to +1000 °C.
Standards
| Name |
Code |
Standards |
| Bars and shapes |
В32 |
GOST 23705-79, TU 14-1-1477-75, TU 14-1-223-72, TU 14-1-402-72, TU 14-1-5-2-73, 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 |
| TU 14-1-223-72 |
0.04-0.1 |
≤0.01 |
≤0.015 |
≤0.5 |
13-16 |
≤0.6 |
Rest |
≤5 |
≤0.07 |
1.7-2.3 |
0.1-0.5 |
≤0.02 |
1.8-2.3 |
2-4 |
5-7 |
≤0.02 |
| TU 14-1-402-72 |
≤0.12 |
≤0.01 |
≤0.015 |
≤0.5 |
13-16 |
≤0.6 |
Rest |
≤5 |
≤0.07 |
1.7-2.3 |
0.1-0.5 |
≤0.02 |
1.8-2.3 |
2-4 |
5-7 |
≤0.02 |
| GOST 5632-72 |
≤0.12 |
≤0.01 |
≤0.015 |
≤0.5 |
13-16 |
≤0.6 |
Rest |
≤5 |
≤0.3 |
1.7-2.3 |
0.1-0.5 |
≤0.02 |
1.8-2.3 |
2-4 |
5-7 |
≤0.02 |
Ni is the basis.
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 and cerium are introduced into the metal by calculation and chemical analysis is not determined.
Mechanical properties
| Section, mm |
σU, MPa |
d5, % |
y, % |
HB, MPa |
| Bars hot rolled and forged and according to GOST 23705-79, THE 14-1-223-72. Hardening in air, 1180-1200 °C (exposure 2 hours) + Heating to 1040-1060 (exposure 4 h), air cooling + Ageing at 790-810 °C (aging 16 h), air cooling |
|
- |
- |
- |
299-341 |
|
≥670 |
≥3 |
≥8 |
- |
|
≥690 |
≥7 |
≥10 |
- |
|
- |
- |
- |
299-341 |
Description mechanical marks
| Name |
Description |
| σU |
Limit short-term strength |
| d5 |
Elongation after rupture |
| y |
The relative narrowing |
| HB |
Brinell hardness number |
Technological properties
| Name |
The value |
| Weldability |
Trudnosmyvaemye. |
