18G2AFps (18G2AF)

Manganese-vanadium steel with nitrogen. Weldability without restrictions. Substitutes 16G2AF, 10HSND, 15HSND .

Rolled metal bearing elements for welded structures operating under variable loads in the range of temperatures up to -60 ° C.

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 96.675–98.465 < 0.17 1.3–1.7 < 0.3 < 0.3 < 0.3 0.08–0.15 < 0.08 < 0.035 0.14–0.22 < 0.04 0.015–0.03

Information on suppliers

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\sigma_{P}$$, $$MPa$$ $$\epsilon_L$$, % Treatment
Sheet GOST 19282-73 590 440 19

Technological Properties

Weldability
no limits

Critical point temperatures

Ac1, K Ac3(Acm), K Ar3(Arcm), K Ar1, K
720 880 780 620

Analogues

USA Germany Japan France United Kingdom European Union Italy Spain China Sweden Hungary Poland Switzerland
K12202 1.8905 (P460N) SM520B E460RIFP 4360-55F 1.8901 FeE460KG AE460KG 15MnVNR 2143 E460D 18G2AV StE47

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
$$\sigma _{U}$$ $$MPa$$ Ultimate tensile strength
$$\sigma_{P}$$ $$MPa$$ Proportionality limit
$$\epsilon_L$$ % 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
Ar3(Arcm) K
Ar1 K