Designation
| Name |
The value |
| Designation GOST Cyrillic |
ХН62ВМЮТ |
| Designation GOST Latin |
XH62BMJuT |
| Transliteration |
HN62VMYuT |
| By chemical elements |
CrNi62ВCuAlTe |
| Name |
The value |
| Designation GOST Cyrillic |
ЭП708 |
| Designation GOST Latin |
EP708 |
| Transliteration |
EhP708 |
| By chemical elements |
- |
Description
Alloy ХН62ВМЮТ used: for the manufacture of parts of power plant engineering and turbine; solid-rolled rings for different purposes.
Note
High-temperature Nickel-based alloy.
The recommended maximum operating temperature for limited time +800 °C.
Standards
| Name |
Code |
Standards |
| Blanks. Of the workpiece. Slabs |
В31 |
OST 1 90304-81, OST 1 90419-92, TU 14-1-1214-75, TU 1-809-823-99 |
| Bars and shapes |
В32 |
OST 1 92049-76, TU 14-1-1018-74 |
| Tape |
В34 |
TU 14-1-2323-78 |
| Sheets and strips |
В33 |
TU 14-1-3556-83 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Al |
B |
Ti |
Mo |
W |
Ce |
| OST 1 90304-81 |
0.05-0.1 |
≤0.02 |
≤0.02 |
≤0.5 |
17.5-20 |
≤0.4 |
Rest |
≤4 |
1.9-2.3 |
≤0.01 |
1-1.4 |
4-6 |
5.5-7.5 |
≤0.03 |
Ni is the basis.
According to OST 1-90304-81 the chemical composition is given for the alloy ХН62ВМЮТ-ВД (ЭП708-ВД). Cerium and boron are introduced by calculation and chemical analysis is not determined.
Mechanical properties
| Section, mm |
sT|s0,2, MPa |
σU, MPa |
d5, % |
y, % |
KCU, kJ/m2 |
| Ring forged in OST 1 92049-76. Annealing in air 1130-1150 °C + Aging at 790-810 °C (extract 15 h), air cooling |
| 25 |
≥660 |
≥1030 |
≥15 |
≥17 |
- |
| Ring welded alloy ХН62ВМЮТ-VD supplied to EAST 1-90304-81 |
| 20 |
≥700 |
≥1000 |
≥18 |
- |
≥198 |
| 800 |
≥600 |
≥700 |
≥14 |
≥25 |
- |
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 |
| KCU |
Toughness |
