14G2

Unalloyed high quality manganese steel.

For large sheet structures operating temperatures up to -70 ° 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, % As, % P, % C, % S, % N, %
GOST 19281-89 96.787–98.51 0.17–0.37 1.2–1.6 < 0.3 < 0.3 < 0.3 < 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 $$\sigma _{U}$$, $$MPa$$ $$\sigma_{P}$$, $$MPa$$ $$\epsilon_L$$, % Treatment
Sheet GOST 19282-73 5–9 470 340 21
Sheet GOST 19281-2014 < 50 510 390 19

Technological Properties

Weldability
Boundedly welded

Critical point temperatures

Ac1, K Ac3(Acm), K
709 825

Analogues

USA Germany Japan France United Kingdom European Union Italy Spain Sweden Bulgaria Hungary Romania Czech Republic Austria
K03103 1.0481 (17Mn4) SB46 A48AP 224-430 1.0481 Fe460-1KG A47RCI 2102 16GS P295GH K460 11478 17Mn4KW

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
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