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
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, %
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

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Mechanical properties at 20 °C

Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\sigma_{P}$ , $MPa$	$\epsilon_L$ , %	Treatment
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
Weldability
no limits

Critical point temperatures

Ac₁, K	Ac₃(Ac_m), K	Ar₃(Arc_m), K	Ar₁, K	Mn, K
Ac₁, K	Ac₃(Ac_m), K	Ar₃(Arc_m), 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
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
Standard	Description
GOST 19281-2014	GOST

Description of chemical elements

Element	Units of measurement	Description
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
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
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
Parameter	Units of measurement	Description
Ac₁	K
Ac₃(Ac_m)	K
Ar₃(Arc_m)	K
Ar₁	K
Mn	K