Designation
| Name |
The value |
| Designation GOST Cyrillic |
ВТ8-1 |
| Designation GOST Latin |
BT8-1 |
| Transliteration |
VT8-1 |
| By chemical elements |
ВTe8-1 |
Description
Alloy VT8−1 is used: for the manufacture of damage tolerant parts of engines for civil aviation.
Note
Alloy VT8−1 has a high level of heat resistance, crack resistance, thermal stability at temperatures up to 450−500 °C and a low sensitivity to stress concentrators.
Standards
| Name |
Code |
Standards |
| Non-ferrous metals, including rare, and their alloys |
В51 |
OST 1 90197-89 |
Mechanical properties
| Section, mm |
σU, MPa |
d5, % |
y, % |
KCU, kJ/m2 |
| Forged discs and shafts after heat treatment OST 1 90197-89 (samples cut in Cordova direction; specified blank weight categories) |
| ≤50 |
980-1180 |
≥10 |
≥25 |
≥343 |
| Forged discs and shafts after heat treatment OST 1 90197-89 |
| - |
≥686 |
- |
- |
- |
| Forged discs and shafts after heat treatment OST 1 90197-89 (samples cut in Cordova direction; specified blank weight categories) |
| 50-100 |
980-1180 |
≥9 |
≥25 |
≥343 |
| 100-200 |
960-1160 |
≥9 |
≥25 |
≥343 |
| 200-500 |
940-1140 |
≥8 |
≥22 |
≥343 |
Description mechanical marks
| Name |
Description |
| σU |
Limit short-term strength |
| d5 |
Elongation after rupture |
| y |
The relative narrowing |
| KCU |
Toughness |
