Alloy H15YU5
Designation
| Name |
The value |
| Designation GOST Cyrillic |
Х15Ю5 |
| Designation GOST Latin |
X15Ju5 |
| Transliteration |
H15Yu5 |
| The chemical elements |
Cr15Al5 |
Description
Alloy H15YU5 used: for the manufacture of resistive elements; electric heating devices.
Note
The heat resisting alloy in an oxidizing atmosphere containing sulfur and sulfur compounds, working with high-alumina ceramics; prone to sagging at elevated temperatures, can not withstand sudden dynamic loads.
Alloy H15YU5 — substitute alloy Х13Ю4.
Standards
| Name |
Code |
Standards |
| Classification, nomenclature and general norms |
В30 |
GOST 10994-74 |
| Steel alloy wire |
В73 |
GOST 12766.1-90 |
| Tapes |
В34 |
GOST 12766.2-90 |
| Sectional and shaped rolling |
В32 |
GOST 12766.3-90, GOST 12766.4-90, TU 14-11-245-88 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Al |
Ti |
Ca |
Ce |
Zr |
| GOST 10994-74 |
≤0.08 |
≤0.015 |
≤0.03 |
≤0.7 |
13.5-15.5 |
≤0.7 |
≤0.6 |
The rest |
4.5-5.5 |
0.2-0.6 |
≤0.1 |
≤0.1 |
≤0.1 |
Fe is the basis.
In accordance with GOST 10994-74, the content of calcium and cerium is calculated. When smelting an alloy intended for the production of heating elements, fresh charge materials should be used. Waste of own marks may be used.
Mechanical characteristics
| Section, mm |
σB, MPa |
d5, % |
d |
Brinell hardness number, MPa |
| Cold-rolled steel strip of 0.2-3.2 mm in the delivery state according to GOST 12766.2-90 |
|
≤736 |
≥16 |
- |
150-200 |
| Wire cold-drawn heat-treated in the delivery condition according to GOST 12766.1-90 (the value is δ200) |
|
≤740 |
- |
≥16 |
- |
Description mechanical marks
| Name |
Description |
| Section |
Section |
| σB |
Limit short-term strength |
| d5 |
Elongation after rupture |
| d |
Elongation after rupture |
Physical characteristics
| Temperature |
r, кг/м3 |
R, НОм · м |
a, 10-6 1/°С |
С, Дж/(кг · °С) |
| 20 |
7280 |
1240-1340 |
- |
480 |
| 1000 |
- |
- |
16 |
- |
| 800 |
- |
- |
- |
770 |
A description of the physical symbols
| Name |
Description |
| Е |
The normal elasticity modulus |
| l |
Coefficient of thermal conductivity |
| R |
UD. the resistivity |
| С |
Specific heat |
Technological properties
| Name |
The value |
| Microstructure |
Ferritic structure. |
| Features of heat treatment |
After heat treatment of cold drawn wire mode: holding at 750 °C 30 min., cooling with the furnace to 150 °C, 48 h exposure, the value of temperature coefficient of electrical resistance of the AU in the temperature range from 20 to 100 °C is equal to 0,4·10-4 1/°C. |
| Magnetic properties |
Ferromagnetic alloy. |
| Vitality |
Survivability at a temperature of 1150 °C for at least 120 hours. |
| Vitality of the alloy for heating elements |
At least 120 hours at a test temperature of 1150 °C. the recommended maximum operating temperature of the heating element from 750 °C at a thickness of 0.2 mm to 1000 °C at a thickness ≥ 6.0 mm. |
