Alloy 47NKH (ЭИ563)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
47НХ |
| Designation GOST Latin |
47HX |
| Transliteration |
47NH |
| The chemical elements |
47NiCr |
| Name |
The value |
| Designation GOST Cyrillic |
ЭИ563 |
| Designation GOST Latin |
EI563 |
| Transliteration |
EhI563 |
| The chemical elements |
- |
Description
Alloy 47NKH used: for the manufacture of pipes; a vacuum-tight junctions with thermometric glass brands 16Ш, С72−4, etc.
Note
Alloy with an average value of CTE.
Alloy with a CTE (8,0−9,0)·10-6 deg-1 in the temperature range from -70 to + 450 °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 14-1-3719-84, TU 14-1-3904-84 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
| GOST 10994-74 |
≤0.05 |
≤0.015 |
≤0.015 |
0.3-0.6 |
0.7-1 |
≤0.3 |
46-47 |
The rest |
≤0.2 |
Fe is the basis.
Mechanical characteristics
| Section, mm |
d5, % |
| Cold-rolled steel strip according to GOST 14080-78 on delivery |
| 0.1-2.5 |
≤930 |
Description mechanical marks
| Name |
Description |
| Section |
Section |
| d5 |
Elongation after rupture |
Physical characteristics
| Temperature |
r, кг/м3 |
a, 10-6 1/°С |
| 20 |
8200 |
- |
| 100 |
- |
86 |
| 200 |
- |
84 |
| 300 |
- |
83 |
| 400 |
- |
81 |
| 500 |
- |
92 |
| 600 |
- |
100 |
| 700 |
- |
111 |
| 800 |
- |
119 |
A description of the physical symbols
| Name |
Description |
| Е |
The normal elasticity modulus |
| R |
UD. the resistivity |
Technological properties
| Name |
The value |
| Macrostructure and contamination |
The macrostructure of billets on the other 14-1-3719-84 should not have shrinkage porosity, bubbles, cracks, delamination, visible without using the magnifying devices. The defects allowed must not exceed: - for a point heterogeneity - 2 points; - for Central porosity - 2 points; - phase separation in the square - 2 points. |
| Inflection Point Temperature |
≥400 °C |
| Temperature coefficient of linear expansion |
The billet according to TU 14-1-3719-84 to determine the CTE is subjected to heat treatment regime: Quenching in VDU from 810±10 °C to + Leave samples at 350±10 °C (aging for 1 h), cooling with the furnace or container. ACP CTE, 10-6 1/°C in the temperature range shall be: - 20÷300 °C - 7,2-8,1; - 20÷400 °With - 7,1-8,2; - 20÷450 °With - 7,8-8,7; - 20÷500 °With and 8.5 and 9.4. The definition of CTE is made in accordance with GOST 14080. |
