10H14G14N4T (EI711, H14G14N3T)
Welded equipment of chemical productions of weak aggressiveness, cryogenic equipment for receiving. liquefied gases. Details of furnace fittings and heat exchangers do700grad. Oxygen lines. Substitute stX18N10.
for manufacturing various welded equipment operating environments in chemical plants weak aggressiveness cryogenic techniques to -196 ° C, and also for use as a heat-resistant and heat-resistant material to 700 ° C .; austenitic steel
Classification
| Country |
Section |
Category |
| CIS, Russia, Ukraine |
Structural steel |
Cryogenic structural steel |
Chemical composition
| Standard |
Fe, % |
Si, % |
Mn, % |
Cr, % |
Ni, % |
P, % |
C, % |
S, % |
|---|
| GOST 5632-72 |
64.545–71.2 |
< 0.8 |
13–15 |
13–15 |
2.8–4.5 |
< 0.035 |
< 0.1 |
< 0.02 |
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 |
194 |
|
15 |
7800 |
| 100 |
189 |
16 |
17 |
|
| 200 |
181 |
16.7 |
18 |
|
| 300 |
170 |
17.5 |
21 |
|
| 400 |
164 |
18.4 |
24 |
|
| 500 |
159 |
19 |
30 |
|
| 600 |
161 |
19.5 |
36 |
|
| 700 |
|
20.1 |
43 |
|
| 800 |
|
20.6 |
51 |
|
| 900 |
|
21 |
|
|
Mechanical properties at 20 °C
| Rolling |
Standard |
Size, mm |
Tension |
Classifiers |
$$\sigma _{U}$$, $$MPa$$ |
$$\sigma_{P}$$, $$MPa$$ |
$$\epsilon_L$$, % |
$$\psi$$, % |
Treatment |
|---|
| Forgings |
GOST 25054-81 |
< 600 |
|
|
637 |
245 |
|
|
Hardening of 1000-1080 ° C, the water |
| Grade |
GOST 5949-75 |
60 |
|
|
640 |
245 |
35 |
50 |
Hardening of 1000-1080 ° C, air cooling |
| Sheet |
GOST 7350-77 |
|
|
fat |
590 |
245 |
40 |
|
hardening |
| Sheet |
GOST 5582-75 |
|
|
thin |
690 |
295 |
35 |
|
Hardening of 1050-1080 ° C, cooling water |
Technological Properties
| Weldability |
Flake Susceptibility |
Propensity to temper brittleness |
|---|
| Boundedly welded |
not sensitive |
not inclined |
Standards
Description of chemical elements
| Element |
Units of measurement |
Description |
| Fe |
% |
Iron |
| Si |
% |
Silicon |
| Mn |
% |
Manganese |
| Cr |
% |
Chrome |
| Ni |
% |
Nickel |
| 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 |
| $$\sigma_{P}$$ |
$$MPa$$ |
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 |
|
|