Alloy residence permit-90
Designation
| Name |
The value |
| Designation GOST Cyrillic |
ВНЖ-90 |
| Designation GOST Latin |
BHZh-90 |
| Transliteration |
VNG-90 |
| The chemical elements |
ВNiFe-90 |
Description
Alloy residence permit-90 is used: for the manufacture of parts of cylinders, sleeves, slozhnofigurnye workpieces with curved surfaces: rotors, gyroscopes, inertial masses, erosion sonicelectronix, funnels for shaped charges, biological protection from gamma radiation.
Note
Powder heavy tungsten-Nickel-iron alloy.
Mechanical characteristics
| sT|s0,2, MPa |
σB, MPa |
d5, % |
kJ/m2, кДж/м2 |
| The product of the powder sintered |
| 650-700 |
950-1000 |
15-20 |
392-490 |
Description mechanical marks
| Name |
Description |
| 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 |
| kJ/m2 |
Toughness |
Physical characteristics
| Temperature |
r, кг/м3 |
| 0 |
16900-17100 |
A description of the physical symbols
| Name |
Description |
| r |
Density |
| l |
Coefficient of thermal conductivity |
| R |
UD. the resistivity |
Technological properties
| Name |
The value |
| Microstructure |
The microstructure of the alloy to be biphasic, consisting of a solid solution based on tungsten and a matrix consisting of a solid solution based on Nickel and iron. |
| Features of production |
Details of the alloy produced by powder metallurgy method, including hydrostatic extrusion, sintering (impregnation) in the environment of hydrogen and vacuum annealing. In the process of being sintered at 1350-1500 °C in the presence of a liquid phase occurs recrystallization of the tungsten powder with the formation of nearly spherical particles, ten times greater than the particle size of initial powder. |
