16GS

Non -alloyed high-quality silica-manganic steel, not prone. to temper embrittlement. Weldability without restrictions. Flock sensitivity is not sensitive. Substitute 17GS, 15GS, 20G2S, 20GS, 18G2S .

Details and parts of boilers and vessels working under pressure. Corps units, bottoms, flanges, etc. Parts operating at temperatures from -40 to 475 degrees. under pressure. Stationary pipelines feedwater TDS boilers operating at 280 degrees. and a pressure of 38 MPa.

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 96.857–98.58 0.4–0.7 0.9–1.2 < 0.3 < 0.3 < 0.3 < 0.08 < 0.035 0.12–0.18 < 0.04 < 0.008

Information on suppliers

Physical characteristics

Temperature, °C $$E\cdot 10^{9}$$, $$MPa$$ $$\alpha\cdot 10^{6}$$, $$K^{-1}$$ $$\rho$$, $$\frac{kg}{m^3}$$ $$c\cdot 10^{-3}$$, $$\frac{J}{kg\cdot K}$$
20 7850
100 13 0.47
200 14
300 181 15.3
400 172 16.2
500 162 16.1
600 16.2

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\sigma_{P}$$, $$MPa$$ $$\epsilon_L$$, % $$\psi$$, % $$KCU\cdot 10^{3}$$, $$\frac{J}{m^2}$$ Treatment
Sheet GOST 5520-79 450–490 275–325 21 590
Trumpet Ø 325 hot rolling 480 280 28 57 1000
Trumpet Ø 325 hot rolling 480 260 27 65 1200

Technological Properties

Weldability Flake Susceptibility Propensity to temper brittleness
no limits not sensitive not inclined

Critical point temperatures

Ac1, K Ac3(Acm), K Ar3(Arcm), K Ar1, K
736–745 920–927 791–820 641–735

Analogues

USA Germany Japan France United Kingdom European Union Italy Bulgaria Poland Romania Czech Republic
K01803 1.0463 (TStE255) SLA325A A48CP 223-490 P295NH Fe460-1KG 16GS 15GA 16SiMn4 11474

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 physical characteristics

Parameter Units of measurement Description
$$E\cdot 10^{9}$$ $$MPa$$ Elastic modulus
$$\alpha\cdot 10^{6}$$ $$K^{-1}$$ Coefficient of thermal (linear) expansion (range 20°C–T)
$$\rho$$ $$\frac{kg}{m^3}$$ The density of the material
$$c\cdot 10^{-3}$$ $$\frac{J}{kg\cdot K}$$ The specific heat of the material (range 20°C–T)

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)
$$\psi$$ % Reduction in cross section on fracture
$$KCU\cdot 10^{3}$$ $$\frac{J}{m^2}$$ Impact toughness

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