H27YU5T
electric heating elements for furnaces with a maximum working temperature of 1350 ° C.
Classification
| Country |
Section |
Category |
| CIS, Russia, Ukraine |
Precision alloys |
With high electrical resistance |
Chemical composition
| Standard |
Si, % |
Ca, % |
Mn, % |
Cr, % |
Ti, % |
Ni, % |
Ba, % |
Al, % |
Ce, % |
P, % |
C, % |
S, % |
|---|
| GOST 10994-74 |
< 0.6 |
< 0.1 |
< 0.3 |
26–28 |
0.15–0.4 |
< 0.6 |
< 0.5 |
5–5.8 |
< 0.1 |
< 0.02 |
< 0.05 |
< 0.015 |
Information on suppliers
Physical characteristics
| Temperature, °C |
$$\alpha\cdot 10^{6}$$, $$K^{-1}$$ |
$$\rho$$, $$\frac{kg}{m^3}$$ |
$$c\cdot 10^{-3}$$, $$\frac{J}{kg\cdot K}$$ |
$$R\cdot 10^{-6}$$, $$\Omega\cdot m$$ |
|---|
| 20 |
|
7190 |
|
1.36 |
| 100 |
15 |
|
0.5 |
1.365 |
| 200 |
|
|
|
1.37 |
| 300 |
|
|
|
1.375 |
| 400 |
|
|
|
1.38 |
| 500 |
|
|
|
1.4 |
| 600 |
|
|
|
1.4 |
| 700 |
|
|
|
1.41 |
| 800 |
|
|
|
1.41 |
| 900 |
|
|
|
1.42 |
Mechanical properties at 20 °C
| Rolling |
Standard |
Size, mm |
Tension |
Classifiers |
$$\sigma _{U}$$, $$MPa$$ |
$$\epsilon_L$$, % |
Treatment |
|---|
| Tape |
|
|
|
|
785 |
10 |
|
Brinell hardness number
| Rolling |
Standard |
Classifiers |
Value, HBW |
|
|
|
200–250 |
Casting and technological parameters
Technological Properties
| Weldability |
Flake Susceptibility |
Propensity to temper brittleness |
|---|
| no limits |
not sensitive |
inclined |
Analogues
Standards
Description of chemical elements
| Element |
Units of measurement |
Description |
| Si |
% |
Silicon |
| Ca |
% |
Calcium |
| Mn |
% |
Manganese |
| Cr |
% |
Chrome |
| Ti |
% |
Titan |
| Ni |
% |
Nickel |
| Ba |
% |
Barium |
| Al |
% |
Aluminium |
| Ce |
% |
Cerium |
| P |
% |
Phosphorus |
| C |
% |
Carbon |
| S |
% |
Sulfur |
Description of physical characteristics
| Parameter |
Units of measurement |
Description |
| $$\alpha\cdot 10^{6}$$ |
$$K^{-1}$$ |
Coefficient of thermal (linear) expansion (range 20°C–T) |
| $$\rho$$ |
$$\frac{kg}{m^3}$$ |
The density of the material |
| $$c\cdot 10^{-3}$$ |
$$\frac{J}{kg\cdot K}$$ |
The specific heat of the material (range 20°C–T) |
| $$R\cdot 10^{-6}$$ |
$$\Omega\cdot m$$ |
Electrical resistivity |
Description of mechanical properties
| Parameter |
Units of measurement |
Description |
| $$\sigma _{U}$$ |
$$MPa$$ |
Ultimate tensile strength |
| $$\epsilon_L$$ |
% |
Elongation at break (longitudinal) |
Description of the casting and technological parameters
| Parameter |
Units of measurement |
Description |
| melting point |
°C |
The temperature at which solid crystalline body makes the transition to the liquid state and Vice versa |
Designation of types of weldability
| Parameter |
Units of measurement |
Description |
| no limits |
|
Welding is performed without heating and without subsequent heat treatment |
| Boundedly welded |
|
Welding is possible with heating up to 100–120 °C and subsequent heat treatment |
| Difficult to weld |
|
For obtaining quality welded joints, additional operations are required: heating up to 200–300 °C for welding, heat treatment after welding — annealing |
| Not applicable for welded structures |
|
|