Alloy residence permit-97 (permit 97,5)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
ВНЖ-97 |
| Designation GOST Latin |
BHZh-97 |
| Transliteration |
VNG-97 |
| The chemical elements |
ВNiFe-97 |
| Name |
The value |
| Designation GOST Cyrillic |
ВНЖ 97,5 |
| Designation GOST Latin |
BHZh 97,5 |
| Transliteration |
VNG 975 |
| The chemical elements |
ВNiFe 97,5 |
Description
Alloy residence permit-97 is used: for the manufacture of parts of cylinders, sleeves, slozhnofigurnye workpieces with curved surfaces: rotors, gyroscopes, inertial masses, rationalwiki electrodes, hoppers shaped charges, biological protection from gamma radiation.
Note
Powder heavy tungsten-Nickel-iron alloy.
Standards
| Name |
Code |
Standards |
| Non-ferrous metals, including rare metals, and their alloys |
В51 |
TU 1967-558-00196150-2000 |
Mechanical characteristics
| sT|s0,2, MPa |
σB, MPa |
d5, % |
kJ/m2, кДж/м2 |
| The product of the powder sintered |
| 700-730 |
700-750 |
1-1.2 |
98 |
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 |
18500-18700 |
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. |
