Alloy ХН35КВТ (ЭИ612К)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
ХН35КВТ |
| Designation GOST Latin |
XH35KBT |
| Transliteration |
HN35KVT |
| The chemical elements |
CrNi35CoВTe |
| Name |
The value |
| Designation GOST Cyrillic |
ЭИ612К |
| Designation GOST Latin |
EI612K |
| Transliteration |
EhI612K |
| The chemical elements |
- |
Description
Alloy ХН35КВТ used: for the manufacture of gas turbine blades, disks, rotors, fasteners, flat springs and other parts operating at temperatures up to +650 °C.
Note
High-temperature alloy on Nickel-iron basis.
The recommended maximum operating temperature for a very long time +650 °C.
The temperature of beginning of intensive scaling in air +850−900 °C.
Standards
| Name |
Code |
Standards |
| Classification, nomenclature and general norms |
В30 |
GOST 5632-72 |
| Bulls. Blanks. Slabs |
В31 |
OST 3-1686-90 |
| Sectional and shaped rolling |
В32 |
TU 14-1-272-72, TU 14-11-245-88 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
Al |
B |
Ti |
Mo |
W |
Co |
| GOST 5632-72 |
≤0.1 |
≤0.02 |
≤0.02 |
1-2 |
14-16 |
≤0.5 |
34-38 |
The rest |
≤0.3 |
≤0.5 |
≤0.01 |
1.2-1.6 |
≤0.3 |
2.8-3.5 |
3.5-4.5 |
| TU 14-1-272-72 |
≤0.1 |
≤0.02 |
≤0.02 |
1-2 |
14-16 |
≤0.5 |
34-38 |
The rest |
- |
≤0.5 |
≤0.01 |
1.2-1.6 |
- |
2.8-3.5 |
3.5-4.5 |
Fe is the basis.
Mechanical characteristics
| Section, mm |
sT|s0,2, MPa |
σB, MPa |
d5, % |
y, % |
kJ/m2, кДж/м2 |
| Bars and shapes. Austenization heating up to 1080-1100 °C (aging of 1.0-1.5 h), cooling in water + Aging at 690-710 °C (extract 25-50 hours), air cooling |
| 25 |
≥345 |
≥590 |
≥15 |
≥35 |
≥686 |
Description mechanical marks
| Name |
Description |
| Section |
Section |
| sT|s0,2 |
Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2% |
| σB |
Limit short-term strength |
| d5 |
Elongation after rupture |
| y |
The relative narrowing |
| kJ/m2 |
Toughness |
Physical characteristics
| Temperature |
Е, ГПа |
r, кг/м3 |
| 20 |
200 |
8200 |
A description of the physical symbols
| Name |
Description |
| Е |
The normal elasticity modulus |
| r |
Density |
| l |
Coefficient of thermal conductivity |
| R |
UD. the resistivity |
