16G2AF
Manganese-vanadium alloyed steel with nitrogen; According to GOST 27772−88 corresponds to steel for building structures C440. Substitutes 15Г2АФ, 14Г2АФ .
Steel structures, welded farm for engineering products.
Classification
| Country |
Section |
Category |
| CIS, Russia, Ukraine |
Structural steel |
Low alloy structural steel for welded structures |
Chemical composition
| Standard |
Fe, % |
Si, % |
Mn, % |
Cr, % |
Cu, % |
Ni, % |
V, % |
As, % |
P, % |
C, % |
S, % |
N, % |
|---|
| GOST 19281-89 |
96.18–98.165 |
0.3–0.6 |
1.3–1.7 |
< 0.4 |
< 0.3 |
< 0.3 |
0.08–0.14 |
< 0.08 |
< 0.035 |
0.14–0.2 |
< 0.04 |
0.015–0.025 |
Information on suppliers
Mechanical properties at 20 °C
| Rolling |
Standard |
Size, mm |
Tension |
Classifiers |
$$\sigma _{U}$$, $$MPa$$ |
$$\sigma_{Y}$$, $$MPa$$ |
$$\epsilon_L$$, % |
Treatment |
|---|
| Sheet |
GOST 19282-73 |
5–9 |
|
|
600 |
450 |
20 |
|
| Sheet |
GOST 19281-2014 |
< 50 |
|
|
510 |
380 |
19 |
|
Technological Properties
Critical point temperatures
| Ac1, K |
Ac3(Acm), K |
Mn, K |
|---|
| 723 |
907 |
400 |
Analogues
| USA |
Germany |
Japan |
France |
United Kingdom |
Canada |
European Union |
Italy |
Spain |
China |
Sweden |
Bulgaria |
Hungary |
Poland |
Romania |
Czech Republic |
Switzerland |
|---|
| K12437 |
1.8905 (P460N) |
SM490A |
E420RIFP |
50E |
400WT |
1.8902 |
FeE420KG |
AE420KG |
Q420C |
2143 |
09G2BFBFF |
58C |
18G2AV |
K510 |
13220 |
StE43 |
Standards
Description of chemical elements
| Element |
Units of measurement |
Description |
| Fe |
% |
Iron |
| Si |
% |
Silicon |
| Mn |
% |
Manganese |
| Cr |
% |
Chrome |
| Cu |
% |
Copper |
| Ni |
% |
Nickel |
| V |
% |
Vanadium |
| As |
% |
Arsenic |
| P |
% |
Phosphorus |
| C |
% |
Carbon |
| S |
% |
Sulfur |
| N |
% |
Nitrogen |
Description of mechanical properties
| Parameter |
Units of measurement |
Description |
| $$\sigma_{Y}$$ |
$$MPa$$ |
Yield strength |
| $$\sigma _{U}$$ |
$$MPa$$ |
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 |
|
|
Description of temperatures of critical points
| Parameter |
Units of measurement |
Description |
| Ac1 |
K |
|
| Ac3(Acm) |
K |
|
| Mn |
K |
|