Complex-alloyed structural stainless steel 20H27N6M3AGV (EK38)
Used for the manufacture of welding wire for welding high alloy steels
Classification
| Country |
Section |
Category |
| CIS, Russia, Ukraine |
Materials for welding and soldering |
Steel welding wire |
Chemical composition
| Standard |
Fe, % |
Si, % |
Ca, % |
Mn, % |
Cr, % |
Ni, % |
Ce, % |
P, % |
C, % |
S, % |
Y, % |
Mo, % |
N, % |
W, % |
|---|
| TU 14-1-3376-82 |
58.155–65 |
< 0.5 |
< 0.1 |
1–2 |
26–28 |
5–7 |
< 0.1 |
< 0.025 |
0.15–0.25 |
< 0.02 |
< 0.1 |
2.5–3 |
0.15–0.25 |
0.2–0.5 |
Information on suppliers
Physical characteristics
| Temperature, °C |
$$\alpha\cdot 10^{6}$$, $$K^{-1}$$ |
$$\varkappa$$, $$\frac{W}{m\cdot K}$$ |
$$\rho$$, $$\frac{kg}{m^3}$$ |
$$R\cdot 10^{-6}$$, $$\Omega\cdot m$$ |
|---|
| 20 |
15.1 |
14 |
7790 |
946 |
Mechanical properties at 20 °C
| Rolling |
Standard |
Size, mm |
Tension |
Classifiers |
$$\sigma _{U}$$, $$MPa$$ |
$$\sigma_{Y}$$, $$MPa$$ |
d5, % |
Treatment |
|---|
| Wire |
GOST 10543 - 98 |
<10 |
Transverse |
raw, cold drawn, thin, Transverse |
570 |
295 |
30 |
|
Brinell hardness number
| Rolling |
Standard |
Classifiers |
Value, HBW |
| Wire |
GOST 10543 - 98 |
raw, cold drawn, thin, Transverse |
200–230 |
Technological Properties
| Weldability |
Flake Susceptibility |
Propensity to temper brittleness |
|---|
| no limits |
not sensitive |
not inclined |
Heat Treatment Modes
| Treatment |
|---|
| Quenching from 1050-1100 degrees C in the air |
Analogues
Standards
Description of chemical elements
| Element |
Units of measurement |
Description |
| Fe |
% |
Iron |
| Si |
% |
Silicon |
| Ca |
% |
Calcium |
| Mn |
% |
Manganese |
| Cr |
% |
Chrome |
| Ni |
% |
Nickel |
| Ce |
% |
Cerium |
| P |
% |
Phosphorus |
| C |
% |
Carbon |
| S |
% |
Sulfur |
| Y |
% |
Yttrium |
| Mo |
% |
Molybdenum |
| N |
% |
Nitrogen |
| W |
% |
Tungsten |
Description of physical characteristics
| Parameter |
Units of measurement |
Description |
| $$\alpha\cdot 10^{6}$$ |
$$K^{-1}$$ |
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 |
| $$R\cdot 10^{-6}$$ |
$$\Omega\cdot m$$ |
Electrical resistivity |
Description of mechanical properties
| Parameter |
Units of measurement |
Description |
| d5 |
% |
Elongation at break |
| $$\sigma_{Y}$$ |
$$MPa$$ |
Yield strength |
| $$\sigma _{U}$$ |
$$MPa$$ |
Ultimate tensile strength |
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 |
|
|