Alloy KHN70JU-N
Designation
| Name |
The value |
| Designation GOST Cyrillic |
ХН70Ю-Н |
| Designation GOST Latin |
XH70Ju-H |
| Transliteration |
HN70Yu-N |
| The chemical elements |
CrNi70Al-Ni |
Description
Alloy KHN70JU-N is used: for the manufacture of heaters for industrial furnaces with maximum operating temperatures up to 1200 °C; heating elements and resistance elements.
Note
The heat resisting alloy in an oxidizing atmosphere, hydrogen, nitrogen-hydrogen blends, vacuum; more heat resistant than zhelezomargantsevye alloys.
Standards
| Name |
Code |
Standards |
| Classification, nomenclature and general norms |
В30 |
GOST 10994-74 |
| Steel alloy wire |
В73 |
GOST 12766.1-90, TU 14-131-820-90 |
| Sectional and shaped rolling |
В32 |
GOST 12766.3-90, GOST 12766.4-90, TU 14-11-245-88 |
| Welding and cutting of metals. Soldering, riveting |
В05 |
TU 14-1-997-2012 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Al |
Ce |
Ba |
| GOST 10994-74 |
≤0.1 |
≤0.02 |
≤0.02 |
≤0.3 |
26-28.9 |
≤0.8 |
The rest |
≤1.5 |
3-3.8 |
≤0.03 |
≤0.1 |
Ni is the basis.
Mechanical characteristics
| Section, mm |
σB, MPa |
d |
| Wire cold-drawn heat-treated in the delivery condition according to GOST 12766.1-90 (the value is δ200) |
|
≤880 |
≥15 |
Description mechanical marks
| Name |
Description |
| Section |
Section |
| σB |
Limit short-term strength |
| d |
Elongation after rupture |
Physical characteristics
| Temperature |
r, кг/м3 |
R, НОм · м |
a, 10-6 1/°С |
С, Дж/(кг · °С) |
| 20 |
7900 |
1250-1350 |
- |
460 |
| 1000 |
- |
- |
21 |
- |
A description of the physical symbols
| Name |
Description |
| Е |
The normal elasticity modulus |
| l |
Coefficient of thermal conductivity |
| С |
Specific heat |
Technological properties
| Name |
The value |
| Microstructure |
Austenitic structure. |
| Magnetic properties |
Non-magnetic alloy. |
| Operating temperature |
Recommended maximum working temperature of the heating element from 950 °C at a thickness of 0.2 mm to 1200 °C thickness ≥ 6.0 mm. |
| Vitality |
Survivability at a temperature of 1200 °C for at least 100 hours. |
