Alloy 47NKHR
Designation
| Name |
The value |
| Designation GOST Cyrillic |
47НХР |
| Designation GOST Latin |
47HXP |
| Transliteration |
47NHR |
| The chemical elements |
47NiCrHg |
Description
Alloy 47NKHR used: For vacuum junctions of items of electronic equipment with glass C90−1, С93−2, С93−4, С94- 1, С95−2, etc.
Note
Alloy with an average value of CTE.
Alloy with a CTE (8,5−11,0)·10-6 deg-1 in the temperature range from -70 to + 330 °C.
Standards
| Name |
Code |
Standards |
| Classification, nomenclature and general norms |
В30 |
GOST 10994-74 |
| Tapes |
В34 |
GOST 14080-78 |
| Steel alloy wire |
В73 |
GOST 14081-78 |
| Sectional and shaped rolling |
В32 |
GOST 14082-78, TU 14-11-245-88 |
| Bulls. Blanks. Slabs |
В31 |
TU 14-1-3904-84 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
B |
| GOST 10994-74 |
≤0.05 |
≤0.015 |
≤0.015 |
≤0.4 |
4.5-6 |
≤0.3 |
46-48 |
The rest |
≤0.02 |
Fe is the basis.
Mechanical characteristics
| σB, MPa |
d4 |
| Cold-rolled strips of alloy grade according to GOST 47NKHR 14080-78 on delivery |
| 490-610 |
≥20 |
| ≤930 |
- |
Description mechanical marks
| Name |
Description |
| σB |
Limit short-term strength |
| d4 |
Elongation after rupture |
Physical characteristics
| Temperature |
r, кг/м3 |
a, 10-6 1/°С |
| 20 |
8200 |
- |
| -100 |
- |
88 |
| -80 |
- |
88 |
| -60 |
- |
88 |
| -40 |
- |
87 |
| -20 |
- |
85 |
| 100 |
- |
87 |
| 200 |
- |
91 |
| 300 |
- |
91 |
| 400 |
- |
101 |
| 500 |
- |
115 |
| 600 |
- |
125 |
| 700 |
- |
133 |
| 800 |
- |
140 |
A description of the physical symbols
| Name |
Description |
| l |
Coefficient of thermal conductivity |
| a |
The coefficient of linear expansion |
Technological properties
| Name |
The value |
| Inflection Point Temperature |
≥330 °C |
