15G2SFD

Manganese-vanadium alloyed steel with copper. For welded metal structures in construction and engineering.

For welded metal structures in construction and engineering.

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 96.257–97.98 0.4–0.7 1.3–1.7 < 0.3 0.15–0.3 < 0.3 0.05–0.1 < 0.08 < 0.035 0.12–0.18 < 0.04 < 0.008

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 19281-2014 5–9 560 400 18
Sheet GOST 19281-2014 < 50 510 390 19
Grade GOST 19281-2014 < 50 530 390 18

Technological Properties

Weldability
no limits

Critical point temperatures

Ac1, K Ac3(Acm), K Mn, K
720 850 420

Standards

Standard Description
GOST 19281-89

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