12Г2ФД

Alloy steel.

Production of high-strength rolled steel and increased resistance to atmospheric corrosion used in general-purpose structures with welded, riveted and bolted joints.

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 19281-2014 97.1–97.6 0.17–0.37 1.3–1.7 < 0.3 0.15–0.3 < 0.3 0.02–0.1 < 0.08 < 0.03 0.09–0.15 < 0.035 < 0.008

Information on suppliers

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\sigma_{Y}$$, $$MPa$$ d5, % Treatment
Grade GOST 19281-2014 < 250 430 265 21

Standards

Standard Description
GOST 19281-2014 GOST

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
d5 % Elongation at break
$$\sigma_{Y}$$ $$MPa$$ Yield strength
$$\sigma _{U}$$ $$MPa$$ Ultimate tensile strength