HN70YU (EI652)
Heating elements of resistance. Details of the combustion chambers and afterburner chambers — pockets, diffusers, screens, etc. with minor voltages and t up to 1200 degrees. 7900kg / m3.
various parts operating at moderate voltages, at 1100−1200 ° C (can be applied to the heating resistance element).
Classification
| Country |
Section |
Category |
| CIS, Russia, Ukraine |
Heat resistant steels and alloys |
Heat resistant alloys |
Chemical composition
| Standard |
Fe, % |
Si, % |
Mn, % |
Cr, % |
Cu, % |
Ni, % |
Ba, % |
Al, % |
Ce, % |
P, % |
C, % |
S, % |
|---|
| GOST 5632-72 |
< 1 |
< 0.8 |
< 0.3 |
26–29 |
< 0.07 |
65.073–71.2 |
< 0.1 |
2.8–3.5 |
< 0.03 |
< 0.015 |
< 0.1 |
< 0.012 |
Information on suppliers
Physical characteristics
| Temperature, °C |
$$E\cdot 10^{9}$$, $$MPa$$ |
$$\alpha\cdot 10^{6}$$, $$K^{-1}$$ |
$$\varkappa$$, $$\frac{W}{m\cdot K}$$ |
$$\rho$$, $$\frac{kg}{m^3}$$ |
|---|
| 20 |
191 |
|
11.7 |
7900 |
| 100 |
182 |
13.14 |
12.6 |
|
| 200 |
173 |
13.86 |
13.9 |
|
| 300 |
166 |
14.76 |
13.55 |
|
| 400 |
156 |
15.68 |
17.25 |
|
| 500 |
147 |
16.39 |
18.9 |
|
| 600 |
137 |
17.81 |
18.9 |
|
| 700 |
118 |
22.42 |
23.1 |
|
| 800 |
|
25.47 |
24.8 |
|
| 900 |
|
21.34 |
26.9 |
|
| 1000 |
|
21.21 |
|
|
Mechanical properties at 20 °C
| Rolling |
Standard |
Size, mm |
Tension |
Classifiers |
$$\sigma _{U}$$, $$MPa$$ |
$$\epsilon_L$$, % |
Treatment |
|---|
| Sheet |
GOST 24982-81 |
< 3.9 |
|
|
980 |
30 |
Hardening of 1100-1150 ° C, cooling water |
Technological Properties
| Weldability |
|---|
| Boundedly welded |
Analogues
Standards
Description of chemical elements
| Element |
Units of measurement |
Description |
| Fe |
% |
Iron |
| Si |
% |
Silicon |
| Mn |
% |
Manganese |
| Cr |
% |
Chrome |
| Cu |
% |
Copper |
| Ni |
% |
Nickel |
| Ba |
% |
Barium |
| Al |
% |
Aluminium |
| Ce |
% |
Cerium |
| P |
% |
Phosphorus |
| C |
% |
Carbon |
| S |
% |
Sulfur |
Description of physical characteristics
| Parameter |
Units of measurement |
Description |
| $$E\cdot 10^{9}$$ |
$$MPa$$ |
Elastic modulus |
| $$\alpha\cdot 10^{6}$$ |
$$K^{-1}$$ |
Coefficient of thermal (linear) expansion (range 20°C–T) |
| $$\varkappa$$ |
$$\frac{W}{m\cdot K}$$ |
Coefficient of thermal conductivity (the heat capacity of the material) |
| $$\rho$$ |
$$\frac{kg}{m^3}$$ |
The density of the material |
Description of mechanical properties
| Parameter |
Units of measurement |
Description |
| $$\sigma _{U}$$ |
$$MPa$$ |
Ultimate tensile strength |
| $$\epsilon_L$$ |
% |
Elongation at break (longitudinal) |
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 |
|
|