17GS

Non-alloyed high-quality silica-manganese steel. Weldability without restrictions.

Corps units, bottoms, flanges and other welded parts working under pressure at temperatures from -40 to +475 ° 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 96.737–98.46 0.4–0.6 1–1.4 < 0.3 < 0.3 < 0.3 < 0.08 < 0.035 0.14–0.2 < 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 5520-79 490–510 335–345 23
Trumpet GOST 10705-80 490 343 20

Technological Properties

Weldability
no limits

Critical point temperatures

Ac1, K Ac3(Acm), K Ar3(Arcm), K Ar1, K Mn, K
745 870 790 680 380

Analogues

Germany Japan France United Kingdom Canada European Union Italy Belgium Spain China Sweden Bulgaria Hungary Poland Romania Czech Republic Austria
1.0486 (P275N) SM490A E36-3 1449-50/35HR 350W 1.057 Fe510 FE510D1FF AE355D 16Mn 2132 17GS 45D 15GA OL52.3 11483 St510D

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
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
Mn K