HN75MBTYU (EI602)
Details of gas pipeline systems, equipment.
details of pipeline systems, hardware, parts of the combustion chambers with a limited service life at temperatures up to 950 degrees C; heat-resisting alloy
Classification
| Country |
Section |
Category |
| CIS, Russia, Ukraine |
Heat resistant steels and alloys |
Heat resistant alloys |
Chemical composition
| Standard |
Fe, % |
Si, % |
Mn, % |
Cr, % |
Ti, % |
Ni, % |
Al, % |
P, % |
C, % |
S, % |
Nb, % |
Mo, % |
|---|
| GOST 5632-72 |
< 3 |
< 0.8 |
< 0.4 |
19–22 |
0.35–0.75 |
68.568–77.6 |
0.35–0.75 |
< 0.02 |
< 0.1 |
< 0.012 |
0.9–1.3 |
1.8–2.3 |
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 |
190 |
|
|
8300 |
| 100 |
|
12.4 |
13.45 |
|
| 200 |
|
13.4 |
15.3 |
|
| 300 |
|
14.2 |
16.7 |
|
| 400 |
165 |
15 |
18.5 |
|
| 500 |
163 |
15.8 |
20.2 |
|
| 600 |
150 |
16.5 |
22.3 |
|
| 700 |
137 |
18.1 |
24.4 |
|
Mechanical properties at 20 °C
| Rolling |
Standard |
Size, mm |
Tension |
Classifiers |
$$\sigma _{U}$$, $$MPa$$ |
$$\sigma_{P}$$, $$MPa$$ |
$$\epsilon_L$$, % |
$$\psi$$, % |
Treatment |
|---|
| Sheet |
GOST 24982-81 |
|
|
|
900–930 |
|
40 |
|
Hardening of 1050-1080 ° C |
| Castings |
GOST 7769-82 |
|
|
|
860 |
400 |
43 |
37 |
Hardening of 1050-1080 ° C, air |
Technological Properties
Standards
Description of chemical elements
| Element |
Units of measurement |
Description |
| Fe |
% |
Iron |
| Si |
% |
Silicon |
| Mn |
% |
Manganese |
| Cr |
% |
Chrome |
| Ti |
% |
Titan |
| Ni |
% |
Nickel |
| Al |
% |
Aluminium |
| P |
% |
Phosphorus |
| C |
% |
Carbon |
| S |
% |
Sulfur |
| Nb |
% |
Niobium |
| Mo |
% |
Molybdenum |
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 |
| $$\sigma_{P}$$ |
$$MPa$$ |
Proportionality limit |
| $$\epsilon_L$$ |
% |
Elongation at break (longitudinal) |
| $$\psi$$ |
% |
Reduction in cross section on fracture |
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 |
|
|